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LK2540-7RB1
ENCLOSED AC - DC CONVERTERS
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- Manufacturer: BEL / PARTNER STOCK
- Product type: AC / DC Enclosed Power Supplies
- SVHC: No SVHC (25-Jun-2025)
| Delivery and price | |
|---|---|
| Units per pack | 3 |
| Price | 1306.74 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
## K Series ## 150 Watt DC-DC and AC-DC Converters ## **Features** - RoHS lead-free-solder and lead-solder-exempted products available - 5 year warranty for RoHS compliant products with an extended temperature range - Compliant with EN 50155, EN 50121-3-2 - Fire & smoke according to EN 45545 and NF-F16 - (ver. V108 or later; not models with H15-S4 connector) - Class I equipment - Extremely wide input voltage ranges from 8 to 385 VDC, and 85 to 264 VAC, 47 to 440 Hz - Input over- and undervoltage lockout - Adjustable output voltage with remote on/off - 1 or 2 outputs: SELV, no load, overload & short-circuit proof - Rectangular current limiting characteristic - PCBs protected by lacquer - Very high reliability Safety-approved to the latest edition of IEC/EN 60950-1 and UL/CSA 60950-1 **==> picture [69 x 43] intentionally omitted <==** **----- Start of picture text -----**<br> 111<br>4.4"<br>3 U<br>80 168<br>3.2" 6.6"<br>16 TE<br>**----- End of picture text -----**<br> ## **Table of Contents** Description........................................................................................2 Model Selection ................................................................................2 Functional Description ......................................................................5 Electrical Input Data .........................................................................6 Electrical Output Data.......................................................................9 Auxiliary Functions .........................................................................13 Electromagnetic Compatibility (EMC) .............................................17 Immunity to Environmental Conditions ...........................................19 Mechanical Data .............................................................................20 Safety and Installation Instructions .................................................22 Description of Options ....................................................................26 Accessories ....................................................................................34 **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 K Series 150 W DC-DC and AC-DC Converters ## **Description** The K Series of DC-DC and AC-DC converters represents a broad and flexible range of power supplies for use in advanced electronic systems. Features include high efficiency, high reliability, low output voltage noise and excellent dynamic response to load/line changes. LK models can be powered by DC or AC with a wide-input frequency range (without PFC). The converter inputs are protected against surges and transients. An input over- and undervoltage lockout circuitry disables the outputs, if the input voltage is outside of the specified range. Certain types include an inrush current limiter preventing circuit breakers and fuses from tripping at switch-on. All outputs are open- and short-circuit proof, and are protected against overvoltages by means of built-in suppressor diodes. The output can be inhibited by a logic signal applied to pin 18 (i). The inhibit function is not used, pin 18 must be connected with pin 14 to enable the outputs. LED indicators display the status of the converter and allow for visual monitoring of the system at any time. Full input-to-output, input-to-case, output-to-case, and output to output isolation is provided. The converters are designed, built, and safety-approved to the international safety standards IEC/EN 60950-1. They are particulary suitable for railway applications and comply with EN 50155 and EN 50121-3-2. The case design allows operation at nominal load up to 71 °C with natural cooling. If forced cooling is provided, the ambient temperature may exceed 71 °C, but the case temperature must remain below 95 °C. A temperature sensor generates an inhibit signal, which disables the outputs when the case temperature _T_ C exceeds the limit. The outputs are automatically re-enabled, when the temperature drops below the limit. Various options are available to adapt the converters to individual applications. The converters may either be plugged into a 19 ” DIN-rack system according to IEC 60297-3, or be chassis mounted. **Important:** For applications requiring compliance with IEC/EN 61000-3-2 (harmonic distortion), please use our LK4000 or LK5000 Series with incorporated power factor correction (PFC). ## **Model Selection** Non-standard input/output configurations or special customer adaptations are available on request. ## _Table 1a: Models AK_ |**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**8 - 35 VDC**|**Efciency1**<br>**η min**<br>**[%]**|**Options**| |---|---|---|---|---|---|---| |5.1<br>12<br>15<br>24|20<br>10<br>8<br>5|-<br>-<br>-<br>-|-<br>-<br>-<br>-|AK1001-9RG<br>AK1301-9RG<br>AK1501-9RG<br>AK1601-9RG|79<br>81<br>83<br>84.5|~~-7 ⁴,~~P,~~D, V ²~~, T, B, B1,~~non-G~~| |12<br>15<br>24|5<br>4<br>2.5|123<br>153<br>243|5<br>4<br>2.5|AK2320-9RG<br>AK2540-9RG<br>AK2660-9RG|79<br>80.5<br>80.5|~~-7 ⁴, P, D,~~T, B, B1,~~non-G~~| > 1 Min. efficiency at _V_ i nom, _I_ o nom and _T_ A = 25 °C. Typical values are approximately 2% better. 2 Option V for models with 5.1 V outputs; excludes option D > 3 Second output semi-regulated 4 AK, BK, FK models are available as -7 or -9, but without opt. E. The other models CK, DK, EK, LK are available as -7 or -9E (but not -7E). > [NFND: Not for new designs.][Preferred for new designs] **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 2 of 35 K Series 150 W DC-DC and AC-DC Converters _Table 1b: Models BK, FK, CK_ |**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**14 - 70 VDC**|**Efc.1**<br>**η min**<br>**[%]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**20 - 100 VDC**|**Efc.1**<br>**η min**<br>**[%]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**28 - 140 VDC**|**Efc.1**<br>**η min**<br>**[%]**|**Options**| |---|---|---|---|---|---|---|---|---|---|---| |5.1<br>12<br>15<br>24|25<br>12<br>10<br>6|-<br>-<br>-<br>-|-<br>-<br>-<br>-|BK1001-9RG<br>BK1301-9RG<br>BK1501-9RG<br>BK1601-9RG|80.5<br>83<br>84<br>85|FK1001-9RG<br>FK1301-9RG<br>FK1501-9RG<br>FK1601-9RG|80<br>82<br>85<br>86|CK1001-9RG<br>CK1301-9RG<br>CK1501-9RG<br>CK1601-9RG|80<br>82<br>85<br>86|~~-7 ⁴~~, P, D,~~V ²,~~T, B, B1,~~non-G~~| |12<br>15<br>24|6<br>5<br>3|123<br>153<br>243|6<br>5<br>3|BK2320-9RG<br>BK2540-9RG<br>BK2660-9RG|80<br>82<br>82|FK2320-9RG<br>FK2540-9RG<br>FK2660-9RG|81<br>83<br>84|CK2320-9RG<br>CK2540-9RG<br>CK2660-9RG|81<br>84<br>84|~~-7 ⁴, P,~~D, T, B, B1,~~non-G~~| _Table 1c: Models DK, EK, LK_ |**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 1**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Output 2**<br>**_V_o nom**<br>**[VDC]**<br>**_I_o nom**<br>**[A]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**44 - 220 VDC**|**Efc.1**<br>**η min**<br>**[%]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**67 - 385 VDC**|**Efc.1**<br>**η min**<br>**[%]**|**Input Voltage**<br>**_V_i min–****_V_i max**<br>**88 - 372 VDC**<br>**100 - 240 VAC**|**Efc.1**<br>**η min**<br>**[%]**|**Options**| |---|---|---|---|---|---|---|---|---|---|---| |5.1<br>12<br>12.84<br>15<br>24|5<br>25<br>12<br>10<br>10<br>6|-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-|DK1001-9ERG<br>DK1301-9ERG<br>DK1740-9ERG5<br>DK1501-9ERG<br>DK1601-9ERG|80<br>83<br>83<br>85<br>86|---<br>EK1301-9ERG<br>---<br>EK1501-9ERG<br>EK1601-9ERG|---<br>83<br>---<br>84<br>86|LK1001-9ERG<br>LK1301-9ERG<br>LK1740-9ERG5<br>LK1501-9ERG<br>LK1601-9ERG|79<br>83<br>83<br>84<br>85|~~-7 ⁴,~~P,~~D, V ²~~, T, B, B1,~~non-G~~| |12<br>15<br>24<br>25.68|6<br>6<br>5<br>3<br>2.5|123<br>153<br>243<br>25.683, 6|6<br>5<br>3<br>2.5|DK2320-9ERG<br>DK2540-9ERG<br>DK2660-9ERG<br>DK2740-9ERG6|81<br>83<br>84<br>84|EK2320-9ERG<br>EK2540-9ERG<br>EK2660-9ERG<br>---|82<br>83<br>84<br>---|LK2320-9ERG<br>LK2540-9ERG<br>LK2660-9ERG<br>LK2740-9ERG6|81<br>83<br>82<br>83|~~-7 ⁴, P, D,~~T, B, B1,~~non-G~~| > 1 Min. efficiency at _V_ i nom, _I_ o nom and _T_ A = 25 °C. Typical values are approximately 2% better. 2 Option V for models with 5.1 V outputs; excludes option D > 3 Second output semi-regulated 4 AK, BK, FK models are available as -7 or -9, but without opt. E. The other models CK, DK, EK, LK are available as -7 or -9E (but not -7E). > 5 Battery loader for 12 V batteries. _V_ o is controlled by the battery temperature sensor (see _Accessories_ ) within 12.62 – 14.12 V. Options P and D are not available. > 6 Battery loader for 24 V (and 48 V batteries with series-connected outputs). _V_ o is controlled by the battery temperature sensor (see _Accessories_ ) within 25.25 – 28.25 V (50.5 – 56.5 V for 48 V batteries). Options P and D are not available. 7 Option K is available only for LK with 5.1 V output in order to avoid the H15S4 connector. Efficiency is approx. 1.5% worse. > [NFND: Not for new designs.][Preferred for new designs] **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 3 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Part Number Description** CK 2 5 40 -9 E R D3 T B1 G Operating input voltage _V_ i: 8 – 35 VDC ............................................................... AK 14 – 70 VDC ............................................................. BK 20 – 100 VDC ........................................................... FK 28 – 140 VDC ...........................................................CK 44 – 220 VDC ...........................................................DK 67 – 385 VDC ........................................................... EK 100 – 240 VAC (rated voltage) or 88 – 372 VDC ..... LK Number of outputs ............................................................1, 2 Nominal voltage of output 1 (main output) _V_ o1 nom 5.1 V .............................................................................0 12 V .............................................................................3 15 V .............................................................................5 24 V .............................................................................6 Other voltages[ 1] .......................................................7, 8 Nominal voltage of output 2 _V_ o2 nom None (single-output models) .......................................01 12 V, 12 V ...................................................................20 15 V, 15 V ....................................................................40 24 V, 24 V ....................................................................60 Other specifications or additional features[ 1] ....... 21 – 99 Operational ambient temperature range _T_ A: –25 to 71 °C ............................................................... ~~. -7~~ –40 to 71 °C .................................................................-9 Other[ 1] ............................................................... -0, -5, -6 Auxiliary functions and options: Inrush current limitation ..............................................E[ 2] Output voltage control input ..................................... R[ 3] Potentiometer (output voltage adjustment) ................P[ 3] _V_ i / _V_ o monitor (D0 – DD, to be specified[ 1] ) ................. D[ 4] ACFAIL signal ........................................................... ~~V ⁴~~ Current share control .....................................................T H15 standard connector for 5.1 V output models ..... ~~K ⁵~~ Cooling plate standard case ................................B or B1 Cooling plate for long case 220 mm[ 1] .......................B2[ 1] RoHS-compliant for all 6 substances .......................... ~~G~~ - 1 Customer-specific models - 2 Option E is mandatory for all -9 models, except AK, BK, FK. - 3 Feature R excludes option P and vice versa. Option P is not available for battery charger models. - 4 Option D excludes option V and vice versa; option V is available for single-output models with 5.1 V only. 5 Option K is available for single-output models with 5.1 V output to avoid the expensive H15-S4 connector. **Note:** The sequence of options must follow the order above. This part number description is descriptive only; it is not intended for creating part numbers. **Example:** CK2540-9ERD3TB1G: DC-DC converter, operating input voltage range 28 – 140 VDC, 2 electrically isolated outputs, each providing 15 V, 5 A, input current limiter E, control input R to adjust the output voltages, undervoltage monitor D3, current share feature T, cooling plate B1, and RoHS-compliant for all six substances. ## **Product Marking** Basic type designation, applicable approval marks, CE mark, warnings, pin designation, patents and company logo, identification of LEDs, test sockets, and potentiometer. Specific type designation, input voltage range, nominal output voltages and currents, degree of protection, batch no., serial no., and data code including production site, modification status (version), and date of production. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 4 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Functional Description** The input voltage is fed via an input fuse, an input filter, a bridge rectifier (LK models only), and an inrush current limiter to the input capacitor. This capacitor sources a single-transistor forward converter with a special clamping circuit and provides also the power during the hold-up time. Each output is powered by a separate secondary winding of the main transformer. The resultant voltages are rectified and their ripple smoothed by a power choke and an output filter. The control logic senses the main output voltage _V_ o1 and generates, with respect to the maximum admissible output currents, the control signal for the switching transistor of the forward converter. The second output of double-output models is tracking the main output, but has its own current limiting circuit. If the main output voltage drops due to current limitation, the second output voltage will fall as well and vice versa. Standard models with a single 5.1 V output have a syn chronous rectifier to provide good efficiency. **==> picture [437 x 520] intentionally omitted <==** **----- Start of picture text -----**<br> 03057b<br>26 Opt. P 16 R<br>N 4 Vi+ C Y 18 i<br>28 4 20 D/V<br>2 C i + 22 T<br>1<br>12 S+<br>C Y 4 Vo+<br>6<br>8<br>C Y 10 Vo–<br>3<br>L 4 Vi– 3032 14 S–<br>C Y<br>24<br>¹ Transient suppressor (VDR) – +<br>² Suppressor diode (AK, BK, FK models)<br>³ Inrush current limiter (NTC, only for models with T A min = –25 °C ) or option E (for CK, DK, EK, LK models only)<br>⁴ LK models only<br>Block diagram of single-output converters<br>03058b<br>Opt. P 16 R<br>N 4 Vi+ 26 CY 18 i<br>28 4 20 D<br>2<br>Ci + 22 T<br>1<br>CY<br>12 Vo1+<br>14 Vo1–<br>CY CY 4<br>3 Vo2+<br>6<br>L 4 Vi– 30<br>32 8<br>CY CY 10 Vo2–<br>24<br>¹ Transient suppressor (VDR) – +<br>² Suppressor diode (AK, BK, FK models)<br>³ Inrush current limiter (NTC, only for models with T A min = –25 °C ) or option E (for CK, DK, EK, LK models only)<br>⁴ LK models only<br>4<br>Input filter<br>Bridge rectifier Control circuit<br>filter<br>Output<br>Forward converter (approx. 120 kHz)<br>Fuse<br>4<br>Input filter<br>Bridge rectifier<br>Control circuit<br>filter<br>Output 1<br>Forward converter (approx. 120 kHz)<br>Fuse<br>filter<br>Output 2<br>**----- End of picture text -----**<br> _Fig. 1_ _Block diagram of single-output converters_ _Fig. 2_ _Block diagram of double-output models_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 5 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Electrical Input Data** General conditions: - _T_ A = 25 °C, unless _T_ C is specified. - Pin 18 connected to pin 14, _V_ o adjusted to _V_ o nom (if option P); R input not connected. - Sense line pins S+ and S– connected to Vo+ and Vo– respectively. ## _Table 2a: Input data_ |_Table 2a: Input data_|_Table 2a: Input data_|_Table 2a: Input data_||||| |---|---|---|---|---|---|---| |**Model**|||**AK**|**BK**|**FK**|**Unit**| |**Characteristics**||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|| |_V_i|Operating input voltage|_I_o= 0 –_I_o max<br>_T_C min–_T_C max|8<br>35|14<br>70|20<br>100|VDC| |_V_i nom|Nominal input voltage||15|30|50|| |_I_i|Input current|_V_i nom, _I_o nom 1|9.0|6.0|3.75|A| |_P_i 0|No-load input power|_V_i min–_V_i max|2.5|2.5|2.5|W| |_P_i inh|Idle input power|Unit inhibited|1.5|1.5|1.5|| |_R_i|Input resistance|_T_C= 25°C|65|100|70|mΩ| |_R_NTC|NTC resistance2||no NTC|no NTC|no NTC|| |_C_i|Input capacitance||832<br>1040|300<br>370|1200<br>1500|µF| |_V_i RFI|Conducted input RFI|EN 55022,<br>_V_i nom,_I_o nom|A|A|B|| ||Radiated input RFI||A|A|A|| |_V_i abs|Input voltage limits<br>without damage||0<br>40|0<br>84|0<br>100|VDC| ## _Table 2b: Input data_ |_Table 2b: Input data_|_Table 2b: Input data_|_Table 2b: Input data_|||||| |---|---|---|---|---|---|---|---| |**Model**|||**CK**|**DK**|**EK**|**LK**|**Unit**| |**Characteristics**||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|| |_V_i|Operating input voltage|_I_o= 0 –_I_o max<br>_T_C min–_T_C max|28<br>140|44<br>220|67<br>385|88<br>372|VDC| |||||||854<br>(230)<br>2644|VAC| |_V_i nom|Nominal input voltage||60|110|220|3104|VDC| |_I_i|Input current|_V_i nom, _I_o nom 1|3.0|1.6|0.8|0.57|A| |_P_i 0|No-load input power|_V_i min–_V_i max|2.5|2.5|2.5|2.5|W| |_P_i inh|Idle input power|Unit inhibited|1.5|1.5|1.5|4.5|| |_R_i|Input resistance|_T_C= 25°C|150|170|180|480|mΩ| |_R_NTC|NTC resistance2||1000|2000|4000|4000|| |_C_i|Input capacitance||960<br>1200|264<br>330|216<br>270|216<br>270|µF| |_V_i RFI|Conducted input RFI|EN 55022,<br>_V_i nom,_I_o nom|B|B|B|B|| ||Radiated input RFI||A|A|A|A|| |_V_i abs|Input voltage limits<br>without damage||0<br>154|0<br>4003|0<br>400|-400<br>400|VDC| > 1 Both outputs of double-output models are loaded with _I_ o nom. > 2 Valid for -7 versions without option E (-9 versions exclude NTC). This is the nominal value at 25 °C and applies to cold converters at initial switch-on cycle. Subsequent switch-on/off cycles increase the inrush current peak value. 3 For 1 s max. > 4 Rated input voltage range is 100 – 240 VAC (nominal 230 VAC). Nominal frequency range is 50 – 60 Hz; operating frequency range is 47 – 440 Hz (440 Hz for 115 V mains). For frequencies ≥ 63 Hz, refer to _Installation Instructions_ . **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 6 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Input Transient Protection** A suppressor diode or a VDR (depending upon the input voltage range) together with the input fuse and a symmetrical input filter form an effective protection against high input transient voltages which, typically occur in most installations, but especially in battery-driven mobile applications. Standard nominal battery voltages are: 12, 24, 36, 48, 60, 72, 110, and 220 V. Railway batteries are specified with a tolerance of –30% to +25%, with short excursions up to ±40%. In certain applications, additional surges according to RIA 12 are specified. The power supply must not switch off during these surges, and since their energy can practically not be absorbed, an extremely wide input range is required. The EK input range for 110 V batteries has been designed and tested to meet this requirement. ## **Input Fuse** A fuse mounted inside the converter protects against severe defects. This fuse may not fully protect the converter, when the input voltage exceeds 200 VDC. In applications, where the converters operate at source voltages above 200 VDC, an external fuse or a circuit breaker at system level should be installed. _Table 3: Fuse Specification_ |**Mod**|**el**<br>**Fuse type**|**Reference**|**Rating**| |---|---|---|---| |AK<br>BK<br>FK<br>CK<br>DK<br>EK,|fast-blow1<br><br>fast-blow1<br><br>slow-blow2<br><br>slow-blow2<br><br>slow-blow2<br>LK<br>slow-blow2|Littlefuse 314<br>Littlefuse 314<br>Schurter SPT<br>Schurter SPT<br>Schurter SPT<br>Schurter SPT|30 A, 125 V<br>25 A, 125 V<br>16 A, 250 V<br>12.5 A, 250 V<br>8 A, 250 V<br>4 A, 250 V| 1 Fuse size 6.3 × 32 mm 2 Fuse size 5 × 20 mm ## **Inrush Current Limitation** The CK, DK, EK, and LK models incorporate an NTC resistor in the input circuitry, which at initial turn-on reduces the peak inrush current value by a factor of 5 – 10, such protecting connectors and switching devices from damage. Subsequent switch-on cycles within short periods will cause an increase of the peak inrush current value due to the warming-up of the NTC resistor. See also _Option E_ . The inrush current peak value (initial switch-on cycle) can be determined by following calculation; see also fig. 3: **==> picture [212 x 288] intentionally omitted <==** **----- Start of picture text -----**<br> V<br>I inr p = [_______________] ( R s ext + i source R i + R NTC)<br>I i inr [A]<br>150 05108a<br>100<br>CK<br>EK, LK<br>DK<br>50<br>0<br>0.1 1 2 3 t [ms]<br>Fig. 3<br>Typical inrush current versus time at Vi max, Rext = 0 Ω.<br>For AK, BK, FK, and for application-related values,<br>use the formula in this section to get realistic results.<br>**----- End of picture text -----**<br> **==> picture [141 x 50] intentionally omitted <==** **==> picture [240 x 165] intentionally omitted <==** **----- Start of picture text -----**<br> 05109a<br>R s ext I inr p R i R NTC<br>+<br>V i source C i int<br>Fig. 4<br>Equivalent input circuit<br>**----- End of picture text -----**<br> tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 7 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Static Input Current Characteristics** **==> picture [187 x 217] intentionally omitted <==** **----- Start of picture text -----**<br> I i [A]<br>20 04044a<br>10<br>5<br>AK<br>BK<br>2<br>FK<br>CK<br>1<br>DK<br>EK<br>0.5 LK (DC input) V i<br>1 2 3 4 5 ____ V i min<br>**----- End of picture text -----**<br> _Fig. 5_ _Typical input current versus relative input voltage_ ## **Reverse Polarity** The converters (except LK models) are not protected against reverse polarity at the input to avoid unwanted power losses. In general, only the input fuse will trip. LK models are fully protected by the built-in bridge rectifier. ## **Input Under-/Overvoltage Lockout** If the input voltage remains below approx. 0.8 _V_ i min or exceeds approx. 1.1 _V_ i max, an internally generated inhibit signal disables the output(s). When checking this function, the absolute maximum input voltage _V_ i abs should be observed. Between _V_ i min and the undervoltage lock-out level the output voltage may be below the value defined in table _Electrical Output data._ ## **Hold-Up Time** **==> picture [200 x 186] intentionally omitted <==** **----- Start of picture text -----**<br> t h [ms]<br>04045a<br>EK<br>100<br>CK/FK<br>DK<br>10<br>AK BK<br>1<br>0.1 ____ V i<br>1 2 3 4 5 6 V i min<br>**----- End of picture text -----**<br> _Fig. 6a_ _Typical hold-up time t_ h _versus relative DC input voltage. V_ i _/V_ i min _. DC-DC converters require an external series diode in the input path, if other loads are connected to the same input supply lines._ **==> picture [174 x 152] intentionally omitted <==** **----- Start of picture text -----**<br> t h [ms]<br>100 04049a<br>10<br>V i<br>2 _______<br>1 2 3 4 V i min<br>**----- End of picture text -----**<br> _Fig. 6b_ _Typical hold-up time t_ h _versus relative AC input voltage (LK models)_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 8 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Electrical Output Data** General Conditions: – _T_ A = 25 °C, unless _T_ C is specified. – Pin 18 (i) connected to pin 14 (S– or Vo1–), R input not connected, _V_ o adjusted to _V_ o nom (option P), – Sense line pins 12 (S+) and 14 (S–) connected to pins 4 (Vo1+) and 8 (Vo1–), respectively. _Table 5: Output data of single-output models_ |**Model**<br>**Nom. output voltage**|**Model**<br>**Nom. output voltage**|**Model**<br>**Nom. output voltage**|**Model**<br>**Nom. output voltage**|**Model**<br>**Nom. output voltage**|**AK – LK1001**<br>**5.1 V**|**AK – LK1301/1740 5**<br>**12 V / 12.84 V 5**|**AK – LK1501**<br>**15 V**|**AK – LK1601**<br>**24 V**|**Unit**| |---|---|---|---|---|---|---|---|---|---| |**Characteristics**||||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|| |_V_o|Output voltage|||_V_i nom,_I_o nom|5.07<br>5.13|11.935<br>12.075|14.91<br>15.09|23.86<br>24.14|V| |_V_o BR|Output protection<br>(suppressor diode)7||||6.0|15.2/17.55|19.6|28.5|| |_I_o nom|Output current nom.1|||_V_i min–_V_i max<br>_T_C min _– T_C max|206/25|105, 6/12|86/10|56/6|A| |_I_o L|Output current limit|||_V_i min–_V_i max|216/26|10.25, 6/12.2|8.66/10.2|5.26/6.2|| |_V_o|Output<br>noise3|Low frequency8||_V_i nom,_I_o nom<br>BW = 20 MHz|5|5|5|5|mVpp| |||Switching frequ.|||10|5|5|5|| |||Total incl. spikes|||80|50|70|100|| |∆_V_o u|Static line regulation<br>with respect to_V_i nom|||_V_i min–_V_i max<br>_I_o nom|±15|±20|±25|±30|mV| |∆_V_o l|Static load regulation2|||_V_i nom<br>(0.1_–_1) _I_o nom|_-_202|_-_30|_-_40|_-_50|| |_V_o d|Dynamic<br>load<br>regulation9||Voltage<br>deviation9|_V_i nom<br>_I_o nom↔0.5_I_o nom|±150|±130|±130|±150|| |_t_d|||Recovery<br>time9||0.3|0.4|0.4|0.3|ms| |αv o|Temperature coefcient of<br>output voltage4|||_I_o nom<br>_T_C min _– T_C max|±0.02|±0.02|±0.02|±0.02|%/K| - 1 If the output voltages are increased above _V_ o nom through R-input control, option P setting, remote sensing or option T, the output currents should be reduced accordingly so that _P_ o nom is not exceeded. - 2 See fig. 7 below ! - 3 Measured according to IEC/EN 61204 with a probe according to annex A - 4 For battery charger applications, a defined negative temperature coefficient can be provided by using a temperature sensor (see _Accessories)_ , but we recommend choosing the special battery charger models. - 5 Especially designed for battery charging using the temperature sensor (see _Accessories_ ). _V_ o is set to 12.84 V ±1% (R-input open) 6 Values for AK models - 7 Breakdown voltage of the incorporated suppressor diode (1 mA; 10 mA for 5 V output). Exceeding _V_ o BR is dangerous for the suppressor diode. - 8 LK models only (twice the input frequency) - 9 See _Dynamic load regulation_ **==> picture [244 x 99] intentionally omitted <==** **----- Start of picture text -----**<br> Vo [V]<br>Models with diodes<br>5.1<br>Models with synchr.<br>rectifier<br>0.15 JM049 1.0 Io/Io nom<br>oR<br>∆V<br>**----- End of picture text -----**<br> _Fig. 7_ _Output voltage regulation for models with synchronous rectifier and with diode rectifier_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 9 of 35 ## K Series ## 150 W DC-DC and AC-DC Converters _Table 6a: Output data of double-output models. General conditions as per table 5._ |**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**AK – LK2320 (2 x 12 V)**|**AK – LK2320 (2 x 12 V)**|**AK – LK2540 (2 x 15 V)**|**AK – LK2540 (2 x 15 V)**|**Unit**| |---|---|---|---|---|---|---|---|---|---| |**Characteristics**||||**Conditions**|**Output 1**|**Output 2**|**Output 1**|**Output 2**|| ||||||**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|| |_V_o|Output voltage|||_V_i nom,_I_o1 nom,_I_o2 nom|11.93<br>12.07|11.82<br>12.18|14.91<br>15.09|14.78<br>15.22|V| |_V_o BR<br>8|Output protection<br>(suppressor diode)||||15.2|15.2|19.6|19.6|| |_I_o nom|Output current nom.2|||_V_i min–_V_i max<br>_T_C min _– T_C max|51/6|51/6|41/5|41/5|A| |_I_o L|Output current limit10|||_V_i min–_V_i max|5.21/6.2|5.21/6.2|4.21/5.2|4.21/5.2|| |_V_o|Output<br>noise3|Low frequency9||_V_i nom,_I_o nom<br>BW = 20 MHz|5|5|5|5|mVpp| |||Switching frequ.|||5|5|5|5|| |||Total incl. spikes|||40|40|50|50|| |∆_V_o u|Static line regulation<br>with respect to_V_i nom|||_V_i min–_V_i max<br>_I_o nom|±20|5|±25|5|mV| |∆_V_o l|Static load regulation|||_V_i nom<br>(0.1_–_1) _I_o nom|_-_40|5|_-_50|5|| |_V_o d|Dynamic<br>load<br>regulation||Voltage<br>deviation4|_V_i nom<br>_I_o1 nom↔0.5_I_o1 nom<br>0.5_I_o2 nom|±100|±150|±100|±150|| |_t_d|||Recovery<br>time4||0.2||0.2||ms| |αv o|Temperature coefcient of<br>output voltage6|||_I_o nom<br>_T_C min _– T_C max|±0.02||±0.02||%/K| _Table 6b: Output data of double-output models. General conditions as per table 5._ |**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**Model (Nom. output voltage)**|**AK – LK2660 / 2740 (2 × 24 V / 2 × 25.68 V)7**|**AK – LK2660 / 2740 (2 × 24 V / 2 × 25.68 V)7**|**Unit**| |---|---|---|---|---|---|---|---| |**Characteristics**||||**Conditions**|**Output 1**|**Output 2**|| ||||||**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|| |_V_o|Output voltage|||_V_i nom,_I_o1 nom,_I_o2 nom|23.867<br>24.147|23.647<br>24.367|V| |_V_o BR<br>8|Output protection<br>(suppressor diode)||||28.5/347|28.5/347|| |_I_o nom|Output current nom.2|||_V_i min–_V_i max<br>_T_C min _– T_C max|2.51, 7/3|2.51, 7/3|A| |_I_o L|Output current limit10|||_V_i min–_V_i max|2.71, 7/3.2|2.71, 7/3.2|| |_V_o|Output<br>noise3|Low frequency9||_V_i nom,_I_o nom<br>BW = 20 MHz|5|5|mVpp| |||Switching frequ.|||5|5|| |||Total incl. spikes|||80|80|| |∆_V_o u|Static line regulation<br>with respect to_V_i nom|||_V_i min–_V_i max<br>_I_o nom|±30|5|mV| |∆_V_o l|Static load regulation|||_V_i nom<br>(0.1_–_1) _I_o nom|_-_60|5|| |_V_o d|Dynamic<br>load<br>regulation||Voltage<br>deviation4|_V_i nom<br>_I_o1 nom↔0.5_I_o1 nom<br>0.5_I_o2 nom|±100|±150|| |_t_d|||Recovery<br>time4||0.2||ms| |αv o|Temperature coefcient of<br>output voltage6|||_I_o nom<br>_T_C min _– T_C max|±0.02||%/K| - 1 Values for AK models - 2 If the output voltages are increased above _V_ o nom via R-input control, option P setting, remote sensing, or option T, the output currents should be reduced accordingly, so that _P_ o nom is not exceeded. - 3 Measured according to IEC/EN 61204 with a probe annex A - 4 See _Dynamic Load Regulation_ - 5 See _Output Voltage Regulation of Double-Output Models_ - 6 For battery charger applications, a defined negative temperature coefficient can be provided by using a temperature sensor; see _Accessories._ - 7 Especially designed for battery charging using the battery temperature sensor; see _Accessories_ . _V_ o1 is set to 25.68 V ±1% (R-input open-circuit). - 8 Breakdown voltage of the incorporated suppressor diodes (1 mA). Exceeding _V_ o BR is dangerous for the suppressor diodes. - 9 LK models only (twice the input frequency) **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 10 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Thermal Considerations** If a converter is located in free, quasi-stationary air (convection cooling) at the indicated maximum ambient temperature _T_ A max (see table _Temperature specifica tions)_ and is operated at its nominal input voltage and output power, the temperature measured at the _Measuring point of case temperature T_ C (see _Mechanical Data_ ) will approach the indicated value _T_ C max after the warm-up phase. However, the relationship between The thermal conditions are influenced by input voltage, output current, airflow, and temperature of surrounding components and _T_ A and _T_ C depends heavily upon the conditions of operation and integration into a system. surfaces. _T_ A max is therefore, contrary to _T_ C max, an indicative value only. **Caution:** The installer must ensure that under all operating conditions _T_ C remains within the limits stated in the table _Temperature specifications._ **Notes:** Details are specified in fig. 8. Sufficient forced cooling or an additional heat sink allows _T_ A to be higher than 71 °C (e.g., 85 °C), as long as _T_ C max is not exceeded. **==> picture [226 x 153] intentionally omitted <==** **----- Start of picture text -----**<br> I o/ I o nom<br>1.0<br>0.8<br>Forced<br>Convection cooling<br>cooling<br>0.6<br>T C max<br>0.4<br>0.2<br>0 T A [°C]<br>T A min 50 60 70 80 90 100<br>05089a<br>**----- End of picture text -----**<br> **==> picture [24 x 10] intentionally omitted <==** **----- Start of picture text -----**<br> Fig. 8<br>**----- End of picture text -----**<br> _Output current derating versus temperature for -7 and -9 models._ ## **Thermal Protection** A temperature sensor generates an internal inhibit signal, which disables the outputs, when the case temper ature exceeds _T_ C max. The outputs automatically recover, when the temperature drops below this limit. Continuous operation under simul taneous extreme worst-case conditions of the following three parameters should be avoided: Minimum input voltage, maximum output power, and maximum temperature. ## **Output Protection** Each output is protected against overvoltages, which could occur due to a failure of the internal control circuit. Voltage suppressor diodes (which under worst case condition may become a short circuit) provide the required protection. The suppressor diodes are not designed to withstand externally applied overvoltages. Overload at any of the outputs will cause a shut-down of all outputs. A red LED indicates the overload condition. **Note:** _V_ o BR is specified in _Electrical Output Data_ . If this voltage is exceeded, the suppressor diode generates losses and may become a short circuit. ## **Parallel and Series Connection** Single- or double-output models with equal output voltage can be connected in parallel using option T (current sharing). If the T pins are interconnected, all converters share the output current equally. Single-output models and/or main and second outputs of double-output models can be connected in series with any other (similar) output. ## **Notes:** - Parallel connection of double-output models should always include both, main and second output to maintain good regulation. - Not more than 5 converters should be connected in parallel. - Series connection of second outputs without involving their main outputs should be avoided, as regulation may be poor. - The maximum output current is limited by the output with the lowest current limitation when several outputs are connected in series. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 11 of 35 ## K Series ## 150 W DC-DC and AC-DC Converters **==> picture [185 x 153] intentionally omitted <==** **----- Start of picture text -----**<br> V o/ V o nom<br>0.98<br>0.5<br>I o1<br>I oL<br>0 05098a<br>0.5 1.0 I o/ I o nom<br>**----- End of picture text -----**<br> _Fig. 9_ _Output characteristic Vo versus Io (single-output models or double-output models with parallel-connected outputs)._ ## **Output Voltage Regulation** Figure 10 applies to single-output or double-output models with parallel-connected outputs. For independent configuration, output 1 is under normal con ditions regulated to _V_ o nom, irrespective of the output currents. _V_ o2 depends upon the load distribution. If both outputs are loaded with more than 10% of _I_ o nom, the deviation of _V_ o2 remains within ±5% of _V_ o1. Figures 11 to 13 show the regulation depending on load distribution. Two outputs of a double-output model connected in parallel behave like the output of a single-output model. **Note:** If output 2 is not used, connect it in parallel with output 1! This ensures good regulation and efficiency. **==> picture [225 x 150] intentionally omitted <==** **----- Start of picture text -----**<br> Vo<br>Vod Vo ±1% Vo ±1%<br>Vod<br>td td<br>t<br>Io/Io nom<br>1<br>0.5<br> ≥ 10 µs ≥ 10 µs<br>0 05102c t<br>**----- End of picture text -----**<br> _Fig. 10 Typical dynamic load regulation of V_ o _._ **==> picture [171 x 149] intentionally omitted <==** **----- Start of picture text -----**<br> V o2 [V]<br>15.75 05106a<br>I o1 = 5.0 A<br>15.5 II o1o1 = 3.75 A = 2.5 A<br>I o1 = 1.25 A<br>15.25 I o1 = 0.5 A<br>15.0<br>14.75<br>14.5<br>14.25<br>14.0<br>0 1 2 3 4 5 6 I o2 [A]<br>**----- End of picture text -----**<br> _Fig. 12 Models with 2 outputs 15 V: V_ o2 _versus I_ o2 _with various I_ o1 _(typ)_ **==> picture [169 x 150] intentionally omitted <==** **----- Start of picture text -----**<br> V o2 [V]<br>12.6 05105a<br>I o1 = 6.0 A<br>12.4 I I o1o1 = 4.5 A = 3.0 A<br>I o1 = 1.5 A<br>12.2 I o1 = 0.6 A<br>12.0<br>11.8<br>11.6<br>11.4<br>11.2<br>0 1 2 3 4 5 6 7 I o2 [A]<br>**----- End of picture text -----**<br> _Fig. 11 Models with 2 outputs 12 V: V_ o2 _versus I_ o2 _with various I_ o1 _(typ)_ **==> picture [167 x 149] intentionally omitted <==** **----- Start of picture text -----**<br> V o2 [V]<br>26 05107a<br>I o1 = 3 A<br>I o1 = 2 A<br>25.5 I o1 = 1 A<br>I o1 = 0.5 A<br>25 I o1 = 0.3 A<br>24.5<br>24<br>23.5<br>23<br>0 0.5 1 1.5 2 2.5 3 3.5 I o2 [A]<br>**----- End of picture text -----**<br> _Fig. 13_ _Models with 2 outputs 24 V: V_ o2 _versus I_ o2 _with various I_ o1 _(typ)_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 12 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Auxiliary Functions** ## **Inhibit for Remote On/Off** The outputs may be enabled or disabled by means of a logic signal (TTL, CMOS, etc.) applied between the inhibit input i (pin 18) and pin 14 (S– or Vo1–). In systems with several converters, this feature can be used to control the activation sequence of the converters. If the inhibit function is not required, connect the inhibit pin 18 with pin 14! **Note:** If pin 18 is not connected, the output is disabled. _Table 7: Inhibit characteristics_ |**Characteristics**|**Characteristics**||**Conditions**|**min**<br>**typ**<br>**max**|**Unit**| |---|---|---|---|---|---| |_V_inh|Inhibit voltage|_V_o= on|_V_i min–_V_i max|-50<br>0.8|V| |||_V_o= of||2.4<br>50|| |_I_inh|Inhibit current||_V_inh= 0|-400|µA| |_t_<br>r|Rise time|||30|ms| |_t_<br>f|Fall time||Depending on_I_o||| **==> picture [237 x 135] intentionally omitted <==** **----- Start of picture text -----**<br> 06031a<br>Vi+ Vo+<br>I inh<br>i 18<br>V inh<br>Vi– S–/Vo1– 14<br>Fig. 14<br>Definition of V inh and I inh .<br>**----- End of picture text -----**<br> **==> picture [489 x 194] intentionally omitted <==** **----- Start of picture text -----**<br> I inh [mA]<br>V inh = 0.8 V V inh = 2.4 V<br>2.0<br>Vo/Vo nom 06001<br>1.6 1<br>1.2<br>0.1<br>0.8 0 t<br>tr tf<br>0.4 V o = on V o = off<br>Inhibit<br>0 1<br>–0.4 0 t<br>–0.8<br>–40 –20 0 20 40 V inh [V]<br>Fig. 15 Fig. 16<br>Typical inhibit current I inh versus inhibit voltage V inh Output response as a function of inhibit control<br>06032a<br>**----- End of picture text -----**<br> ## **Sense Lines** (Single Output Models) **Important:** Sense lines must always be connected! Incorrectly connected sense lines may activate the overvoltage protection resulting in a permanent short-circuit of the output. This feature allows for compensation of voltage drops across the connector contacts and if necessary, across the load lines. We recommend connecting the sense lines directly at the female connector. To ensure correct operation, both sense lines (S+, S–) should be connected to their respective power outputs (Vo+ and Vo–), and the voltage difference between any sense line and its respective power output (as measured on the connector) should not exceed the following values: _Table 7: Maximum voltage compensation allowed using sense lines_ |**Output voltage**|**Total voltage diference**<br>**between sense lines and**<br>**their respective outputs**|**Voltage diference**<br>**between Vo– and S–**| |---|---|---| |5.1 V|< 0.5 V|< 0.25 V| |12 V, 15 V, 24 V|< 1.0 V|< 0.25 V| **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 13 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Programmable Output Voltage** (R-Function) As a standard feature, the converters offer an adjustable output voltage, identified by letter R in the type designation. The control input R (pin 16) accepts either a control voltage _V_ ext or a resistor _R_ ext to adjust the desired output voltage. When input R is not connected, the output voltage is set to _V_ o nom. - a) Adjustment by means of an **external control voltage** _**V**_ **ext** between pin 16 (R) and pin 14 (S–): - The control voltage range is 0 – 2.75 VDC and allows for an adjustment in the range of approximately 0 – 110% of _V_ o nom. - _V_ o - _V_ ext ≈ –––––– • 2.5 V _V_ o nom - b) Adjustment by means of an **external resistor** : - Depending upon the value of the required output voltage, the resistor shall be connected - **either:** Between pin 16 and pin 14 to achieve an output voltage adjustment range of approximately 0 – 100% of _V_ o nom. - **or:** Between pin 16 and pin 12 to achieve an output voltage adjustment range of 100 – 110% of _V_ o nom. **==> picture [502 x 257] intentionally omitted <==** **----- Start of picture text -----**<br> 05074a<br>Vi+<br>R<br>16 +<br>V ext<br>14 S–/Vo1– – Vo2+ 4 06004a +<br>Vo2+ 6<br>Vi–<br>Vo2– 8 24 V<br>V o1 30 V C o<br>Vo2– 10 48 V<br>Vo1+ 12<br>Vi+ –<br>Vo1– 14<br>R ext R' ext<br>S+/Vo1+ R 16<br>12 R' ext<br>R<br>1 6<br>S–/Vo1– R ext<br>14<br>Vi–<br>**----- End of picture text -----**<br> _Fig. 17_ _Output voltage control for single-output models_ ## _Fig. 18_ _Double-output models:_ _Wiring of the R-input for output voltages 24 V, 30 V, or 48 V with both outputs in series. A ceramic capacitor (C_ o _) across the load_ ## **Warnings:** - _V_ ext shall never exceed 2.75 VDC. - The value of _R_ ’ext shall never be less than the lowest value as indicated in table _R_ ’ext (for _V_ 0 > _V_ 0 nom) to avoid damage to the converter! **Notes** : - The R-Function excludes option P (output voltage adjustment by potentiometer). - If the output voltages are increased above _V_ o nom via R-input control, option P setting, remote sensing, or option T, the output currents should be reduced, so that _P_ o nom is not exceeded. - With double-output models, the second output follows the voltage of the controlled main output. - In case of parallel connection the output voltages should be individually set within a tolerance of 1 – 2%. ## **Test Sockets** Test sockets (pin diameter 2 mm) for measuring the main output voltage _V_ o or _V_ o1 are located at the front of the converter. The positive test socket is protected by a series resistor (see: _Functional Description, block diagrams_ ). The voltage measured at the test sockets is slightly lower than the value at the output terminals. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 14 of 35 ## K Series 150 W DC-DC and AC-DC Converters _Table 8a: R_ ext _for V_ o _< V_ o nom _; approximate values (V_ i nom, _I_ o nom _, series E 96 resistors); R’_ ext _= not fitted_ |_ae a:_ext_or_o|_ae a:_ext_or_o|o nom_; approxmae vaues (_i nom, o no|o nom_; approxmae vaues (_i nom, o no|o nom_; approxmae vaues (_i nom, o no|m_, seres ressors);_ext_no_|m_, seres ressors);_ext_no_|m_, seres ressors);_ext_no_|_e_|_e_|_e_| |---|---|---|---|---|---|---|---|---|---|---| |**_V_o nom= 5.1 V**||**_V_o nom= 12 V**|||**_V_o nom= 15 V**|||**_V_o nom= 24 V**||| |**_V_o [V]**|**_R_ ext [kΩ]**|**_V_o [V] 1**||**_R_ ext [kΩ]**|**_V_o [V] 1**||**_R_ ext [kΩ]**|**_V_o [V] 1**||**_R_ ext [kΩ]**| |0.5<br>1.0<br>1.5<br>2.0<br>2.5<br>3.0<br>3.5<br>4.0<br>4.5<br>5.0|0.432<br>0.976<br>1.65<br>2.61<br>3.83<br>5.76<br>8.66<br>14.7<br>30.1<br>200|2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11|4<br>6<br>8<br>10<br>12<br>14<br>16<br>18<br>20<br>22|0.806<br>1.33<br>2<br>2.87<br>4.02<br>5.62<br>8.06<br>12.1<br>20<br>42.2|2<br>4<br>6<br>8<br>9<br>10<br>11<br>12<br>13<br>14|4<br>8<br>12<br>16<br>18<br>20<br>22<br>24<br>26<br>28|0.619<br>1.47<br>2.67<br>4.53<br>6.04<br>8.06<br>11<br>16.2<br>26.1<br>56.2|4<br>6<br>8<br>10<br>12<br>14<br>16<br>18<br>20<br>22|8<br>12<br>16<br>20<br>24<br>28<br>32<br>36<br>40<br>44|0.81<br>1.33<br>2.0<br>2.87<br>4.02<br>5.62<br>8.06<br>12.1<br>20<br>44.2| _Table 8b: R’_ ext _for V_ o > _V_ o nom _; approximate values (V_ i nom _, I_ o nom _, series E 96 resistors); R_ ext _= not fitted_ |_ae :_ ext _or_o|_ae :_ ext _or_o|o nom_; approxmae vaues (_i nom_,_o n|o nom_; approxmae vaues (_i nom_,_o n|o nom_; approxmae vaues (_i nom_,_o n|om_, seres ressors);_ext_no_|om_, seres ressors);_ext_no_|om_, seres ressors);_ext_no_|_e_|_e_|_e_| |---|---|---|---|---|---|---|---|---|---|---| |**_V_o nom= 5.1 V**||**_V_o nom= 12 V**|||**_V_o nom= 15 V**|||**_V_o nom= 24 V**||| |**_V_o [V]**|**_R ’_ext [kΩ]**|**_V_o [V] 1**||**_R ’_ext [kΩ]**|**_V_o [V] 1**||**_R ’_ext [kΩ]**|**_V_o [V] 1**||**_R ’_ext [kΩ]**| |5.15<br>5.20<br>5.25<br>5.30<br>5.35<br>5.40<br>5.45<br>5.50|432<br>215<br>147<br>110<br>88.7<br>75<br>64.9<br>57.6|12.1<br>12.2<br>12.3<br>12.4<br>12.5<br>12.6<br>12.7<br>12.8<br>13.0<br>13.2|24.2<br>24.4<br>24.6<br>24.8<br>25.0<br>25.2<br>25.4<br>25.6<br>26.0<br>26.4|1820<br>931<br>619<br>475<br>383<br>316<br>274<br>243<br>196<br>169|15.2<br>15.4<br>15.6<br>15.8<br>16.0<br>16.2<br>16.4<br>16.5|30.4<br>30.8<br>31.2<br>31.6<br>32.0<br>32.4<br>32.8<br>33.0|1500<br>768<br>523<br>392<br>316<br>267<br>232<br>221|24.25<br>24.50<br>24.75<br>25.00<br>25.25<br>25.50<br>25.75<br>26.00<br>26.25<br>26.40|48.5<br>49.0<br>49.5<br>50.0<br>50.5<br>51.0<br>51.5<br>52.0<br>52.5<br>52.8|3320<br>1690<br>1130<br>845<br>698<br>590<br>511<br>442<br>402<br>383| > 1 First column: _V_ o or _V_ o1; second column: double-output models with series-connected outputs ## **Display Status of LEDs** **==> picture [233 x 221] intentionally omitted <==** **----- Start of picture text -----**<br> V o1 > 0.95 to 0.98 V o1 adj 06002a<br>OK<br>i<br>I o L<br>V i<br>V i uv V i min V i max V i ov V i abs<br>V o1 > 0.95 to 0.98 V o1 adj V o1 < 0.95 to 0.98 Vo1 adj<br>OK<br>I o L I o<br>I o nom I oL<br>i<br>T C<br>T C max T PTC threshold<br>V inh threshold<br>i<br>V i inh<br>-50 V +0.8 V +2.4 V +50 V<br>LED off LED Status undefined LED on<br>**----- End of picture text -----**<br> _LEDs_ “ _OK_ ” _,_ “ _i_ ” _and_ “ _I_ o L” _status versus input voltage Conditions: I_ o ≤ _I_ o nom _, T_ C ≤ _T_ C max _, V_ inh ≤ _0.8 V V_ i uv _= undervoltage lock-out, V_ i ov _= overvoltage lock-out_ _LEDs_ “ _OK_ ” _and_ “ _I_ o L” _status versus output current Conditions: V_ i min – _V_ i max _, T_ C ≤ _T_ C max _, V_ inh ≤ _0.8 V_ _LED_ “ _i ” versus case temperature Conditions: V_ i min – _V_ i max _, I_ o ≤ _I_ o nom _, V_ inh ≤ _0.8 V_ _LED_ “ _i ” versus V_ inh _Conditions: V_ i min – _V_ i max _, I_ o ≤ _I_ o nom _, T_ C ≤ _T_ C max _Fig. 19 LED indicators_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 15 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Battery Charging /Temperature Sensor** All converters with an R-input are suitable for battery charger applications, but we recommend choosing the models especially designed for this application DK/LK1740 or DK/LK2740; see _Model Selection_ . For optimal battery charging and life expectancy of the battery an external temperature sensor can be connected to the R-input. The sensor is mounted as close as possible to the battery and adjusts the output voltage according to the battery temperature. Depending upon cell voltage and the temperature coefficient of the battery, different sensor types are available, see _Accessories_ . **==> picture [230 x 123] intentionally omitted <==** **----- Start of picture text -----**<br> 03099d<br>Vo+<br>Input Power Vo– Load<br>supply<br>R<br>+<br>�<br>Temperature sensor Battery<br>–<br>+<br>**----- End of picture text -----**<br> _Fig. 20 Connection of a temperature sensor_ **==> picture [209 x 175] intentionally omitted <==** **----- Start of picture text -----**<br> Cell voltage [V]<br>06139b<br>2.45<br>2.40<br>2.35<br>2.30<br>2.25<br>2.20<br>2.15 Vo safe<br>2.10<br>–20 –10 0 10 20 30 40 50 °C<br>VC = 2.27 V, –3 mV/K VC = 2.27 V, –3.5 mV/K<br>VC = 2.23 V, –3 mV/K VC = 2.23 V, –3.5 mV/K<br>**----- End of picture text -----**<br> _Fig. 21_ _Trickle charge voltage versus temperature for defined temp. coefficient. V_ o nom _is the output voltage with open R-input._ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 16 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Electromagnetic Compatibility (EMC)** A metal oxide VDR together with the input fuse and an input filter form an effective protection against high input transient voltages, which typically occur in most installations. The con verters have been successfully tested to the following specifications: ## **Electromagnetic Immunity** _Table 9: Electromagnetic immunity (type tests)_ |**Phenomenon**|**Standard**|**Level**|**Coupling mode**1|**Value**<br>**applied**|**Waveform**|**Source**<br>**imped.**|**Test procedure**|**In**<br>**oper.**|**Perf.**<br>**crit.** 2| |---|---|---|---|---|---|---|---|---|---| |Supply related<br>surge|RIA 123|A4|+i/–i|3.5 VBat|2/20/2 ms|0.2 Ω|1 positive surge|yes|A| |||B||1.5 VBat|0.1/1/0.1 s||||| |Direct transients||C|+i/–i, –i/c|960 Vp|10/100 μs|5 Ω|5 pos. & 5 neg.|yes|B| |||D3||1800 Vp|5/50 μs||||| |||E||3600 Vp|0.5/5 μs|100 Ω|||| |||F||4800 Vp|0.1/1 μs||||| |||G3||8400 Vp|0.05/0.1 μs||||| |Indirect couples<br>transients||H|+o/c, –o/c|1800 Vp|5/50 μs||||| |||J||3600 Vp|0.5/5 μs||||| |||K||4800 Vp|0.1/1 μs||||| |||L||8400 Vp|0.05/0.1 μs||||| |Electrostatic<br>discharge (to case)|IEC/EN<br>61000-4-2|45|contact discharge|±8000 Vp|1/50 ns|330 Ω<br>150 pF|10 pos. & 10 neg.<br>discharges|yes|A| ||||air discharge|±15000 Vp|||||| |Electromagnetic<br>feld|IEC/EN<br>61000-4-3|x6|antenna|20 V/m|AM 80% / 1 kHz|N/A|80 – 1000 MHz|yes|A| |||7|antenna|20 V/m|AM 80% / 1 kHz|N/A|800 – 1000 MHz|yes|A| |||||10 V/m|||1400 – 2100 MHz||| |||||5 V/m|||2100 – 2500 MHz||| |||3|antenna|10 V/m|50% duty cycle,<br>200 Hz rep. rate|N/A|900 ±5 MHz|yes|A| |Electrical fast<br>transients / burst|IEC/EN<br>61000-4-4|38|capacitive, o/c|±2000 Vp|bursts of 5/50 ns;<br>2.5 / 5 kHz over 15 ms;<br>burst period: 300 ms|50Ω|60 s positive<br>60 s negative<br>transients per<br>coupling mode|yes|A| |||4|±i/c, +i/–i<br>direct|±4000 Vp|||||| |Surges|IEC/EN<br>61000-4-5|39|±i/c|±2000 Vp|1.2 / 50 µs|12Ω<br>2Ω|5 pos. & 5 neg.<br>surges per<br>coupling mode|yes|A| ||||+i/–i|±1000 Vp|||||| |Conducted<br>disturbances|IEC/EN<br>61000-4-6|310|i, o, signal wires|10 VAC<br>(140 dBµV)|AM 80% / 1 kHz|150Ω|0.15 – 80 MHz|yes|A| |Power frequency<br>magnetic feld|IEC/EN<br>61000-4-8|311|-|300 A/m|||60 s in all 3 axes|yes|A| 1 i = input, o = output, c = case > 2 A = normal operation, no deviation from specs.; B = temporary loss of function or deviation from specs possible 3 RIA 12 covers or exceeds IEC 60571-1 and EN 50155:2017. Surge D corresponds to EN 50155:2017, waveform A; surge G corres ponds to EN 50155:2001, waveform B 4 Only met with extended input voltage range of CS (for 48 V battery) and ES (for 110 V battery) model types. Such CS models are available on customer’s request. Standard DS models types (on 110 V battery) will shut down during the surge and recover automatically. 5 Exceeds EN 50121-3-2:2015 table 6.3 and EN 50121-4:2016 table 2.4. 6 Corresponds to EN 50121-3-2:2015 table 6.1 and exceeds EN 50121-4:2016 table 2.1. 7 Corresponds to EN 50121-3-2:2015 table 6.2 and EN 50121-4:2016 table 2.2 (compliance with digital communication devices). 8 Corresponds or exceeds EN 50121-3-2:2015 table 4.2 and EN 50121-4:2016 table 4.2. 9 Covers or exceeds EN 50121-3-2:2015 table 4.3 and EN 50121-4:2016 table 4.3. 10 Corresponds to EN 50121-3-2:2015 table 4.1 and EN 50121-4:2016 table 4.1 (radio frequency common mode). 11 Corresponds to EN 50121-4:2016 table 2.3. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 17 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Electromagnetic Emissions** **==> picture [230 x 146] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV PMM 8000 PLUS: Peak, conducted Vi+, QP + AV, 2009-11-20, 12:35 hBK1601-9R, U i =30 V, U o [=24 V I] o [= 6 A] JM052a<br>80<br>e o EN 55022 A (qp)<br>L ae EN 55022 A (av)<br>60<br>40<br>UH aceasta<br>STS<br>20 ECA EEG ot<br>PSEELE TL<br>UE TF<br>0<br>0.2 0.5 1 2 5 10 20 MHz<br>**----- End of picture text -----**<br> _Fig. 22a Conducted emissions (peak/quasipeak and average) at the phase input according to EN 55011/32, measured at V_ i nom _and I_ o nom _(BK1601-9R). The neutral line performs quite similar._ **==> picture [230 x 133] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV/m TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2009-11-20Testdistance 10 m, BK1601-9R, U i [=24 V, U] o [=24 V I] o [= 6 A]<br>50 a EN 55011 A<br>40<br>30<br><25 dbµV/m<br>20<br>10<br>0 : | | HHH<br>30 50 100 200 500 1000 MHz<br>JM050<br>**----- End of picture text -----**<br> _Fig. 23a Typical radiated emissions according to EN 55011/32, antenna 10 m distance, measured at V_ i nom _and I_ o nom _(BK1601-9R)_ **==> picture [225 x 141] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV PMM 8000 PLUS: Peak, conducted Vi+, QP + AV, 2009-11-20, 13:00 hDK1601-9ERB1, U i =110 V, U o [=24 V I] o [= 6 A] JM053<br>80<br>AEE<br>60 SEPT EN 55022 B (qp) E E<br>EN 55022 B (av)<br>40 AUCTTLLEM<br>20 al lad ail<br>BeaevoHATTN a) NCU)eaUeVat1 TTT<br>0 Py PMTTAoP<br>0.2 0.5 1 2 5 10 20 MHz<br>**----- End of picture text -----**<br> _Fig. 22b_ _Conducted emissions (peak/quasipeak and average) at the phase input according to EN 55011/32, measured at V_ i nom _and I_ o nom _(DK1601-9ERB1). The neutral line performs quite similar._ **==> picture [231 x 133] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV/m TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2009-11-20Testdistance 10 m, DK1601-9ERB1, U i [=110 V, U] o [=24 V I] o [= 6 A]<br>50 ae EN 55011 A<br>40<br>30<br><25 dbµV/m<br>20<br>10<br>0 | | il ail<br>30 50 100 200 500 1000 MHz<br>JM051<br>**----- End of picture text -----**<br> _Fig. 23b Typical radiated emissions according to EN 55011/32, antenna 10 m distance, measured at V_ i nom _and I_ o nom _(DK1601-9ERB1)_ tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 18 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Immunity to Environmental Conditions** _Table 10: Mechanical and climatic stress_ |**Test method**|**Test method**|**Standard**|**Test Conditions**|**Status**| |---|---|---|---|---| |Cab|Damp heat<br>steady state|IEC/EN 60068-2-78<br>MIL-STD-810D section 507.2|Temperature:<br>40±2°C<br>Relative humidity:<br>93+2/-3%<br>Duration:<br>56 days|Converter<br>not operating| |Kb|Salt mist, cyclic<br>sodium chloride<br>(NaCl) solution|IEC/EN 60068-2-52|Concentration:<br>5% (30 °C) for 2 h<br>Storage:<br>40 °C, 93% rel. humidity<br>Duration:<br>3 cycles of 22 h|Converter<br>not operating| |Fc|Vibration<br>(sinusoidal)|IEC/EN 60068-2-6<br>MIL-STD-810D section 514.3|Acceleration amplitude:<br>0.35 mm (10 – 60 Hz)<br>5 gn= 49 m/s2(60 - 2000 Hz)<br>Frequency (1 Oct/min):<br>10 – 2000 Hz<br>Test duration:<br>7.5 h (2.5 h in each axis)|Converter<br>operating| |Fh|Random vibration<br>broad band (digital<br>control) & guidance|IEC/EN 60068-2-64|Acceleration spectral density:<br>0.05 gn<br>2/Hz<br>Frequency band:<br>8 – 500 Hz<br>Acceleration magnitude:<br>4.9 gn rms<br>Test duration:<br>1.5 h (0.5 h in each axis)|Converter<br>operating| |Ea|Shock<br>(half-sinusoidal)|IEC/EN 60068-2-27<br>MIL-STD-810D section 516.3|Acceleration amplitude:<br>50 gn= 490 m/s2<br>Bump duration:<br>11 ms<br>Number of bumps:<br>18 (3 in each direction)|Converter<br>operating| |-|Shock|EN 50155:2007 clause 12.2.11,<br>EN 61373 sect. 10,<br>class B, body mounted1|Acceleration amplitude:<br>5.1 gn<br>Bump duration:<br>30 ms<br>Number of bumps:<br>18 (3 in each direction)|Converter<br>operating| |-|Simulated long life<br>testing at increased<br>random vibration<br>levels|EN 50155:2007 clause 12.2.11,<br>EN 61373 sect. 8 and 9,<br>class B, body mounted1|Acceleration spectral density:<br>0.02 gn<br>2/Hz<br>Frequency band:<br>5 – 150 Hz<br>Acceleration magnitude:<br>0.8 gn rms<br>Test duration:<br>15 h (5 h in each axis)|Converter<br>operating| 1 Body mounted = chassis of a railway coach ## **Temperatures** _Table 11: Temperature specifications, valid for an air pressure of 800 – 1200 hPa (800 – 1200 mbar)_ |**Model**|**Model**|**Model**|**-5 2**|**-6 2**|**-7 (option)**|**-9**|**Unit**| |---|---|---|---|---|---|---|---| |**Characteristics**||**Conditions**|**min**<br>**max**|**min**<br>**max**|**min**<br>**max**|**min**<br>**max**|| |_T_A|Ambient temperature|Converter operating|- 25<br>50|- 25<br>60|- 25<br>71|- 40<br>71|° C| |_T_C|Case temperature1||- 25<br>851|- 25<br>901|- 25<br>951|- 40<br>951|| |_T_S|Storage temperature|Not operating|- 40<br>85|- 40<br>85|- 40<br>85|- 55<br>85|| > 1 Overtemperature lockout at _T_ C > 95 °C 2 Customer-specific models ## **Reliability and Device Hours** _Table 12: MTBF calculated according to MIL-HDBK 217F_ |**Ratings at specifed**<br>**case temperature**|**Model**|**Ground benign**<br>**40 °C**|**Ground fxed**<br>**40 °C**<br>**70 °C**|**Ground fxed**<br>**40 °C**<br>**70 °C**|**Ground mobile**<br>**50 °C**|**Unit**| |---|---|---|---|---|---|---| |MTBF1|LK2660-7|514 000|88 000|38 000|35 000|h| |Device hours2|AK – LK|500 000||||| > 1 Calculated according to MIL-HDBK-217F-N2 2 Statistic values, based on an average of 4300 working hours per year, over 3 years in general field use. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 19 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Mechanical Data** Dimensions in mm. The converters are designed to be inserted into a 19” rack, 160 mm long, according to IEC 60297-3. **==> picture [506 x 442] intentionally omitted <==** **----- Start of picture text -----**<br> dag 7 TE 9 TE<br>| 3.27<br>| an<br>|i|<br>|big td<br>| 159 4.5 | iol |<br>| | | rT l 09002e |<br>| | @ | I | ® i] ||<br>7 :[EDl ee oe | iFip elot: || Test sockets (+/–) |<br>! oe | Option P ( V o)<br>Option D ( V to)<br>|| eT iaOO \— Option D ( V ti) d<br>LED i (red)<br>i | | @ eo<br>oo ov<br>l on\ \ LED OK (green)<br>; Measuring point of LED I oL (red)<br>| case temperature T C<br>| |<br>4S — CEH | ||<br>L<br>50 27.38 42<br>(171.0 .... 171.9)<br>}® ® L 80 i<br>Front plate Main face Back plate<br>168.5<br>Ø 5 x 90°<br>Ss = Ø 4.1<br>= Ø 3.5<br>q [ Ø 2.8 °<br>ft<br>Screw holes of the<br>frontplate<br>| TT—O—CSd |<br>a |<br>} ProjectionEuropean<br>Mounting slots for chassis or wall mounting<br>10.3 12.1<br>7.04 20.3 30.3<br>29.9<br>19.7<br>89<br>111 (3U) 9.5 4.5<br>51.5<br>6.5 axis<br>Gravitational<br>11.8<br>0.2<br>25.9<br>4<br>**----- End of picture text -----**<br> _Fig. 24 Aluminum case K02 with heat sink; black finish (EP powder coated); weight approx. 1.6 kg_ ## **Notes:** – d ≥ 15 mm, recommended minimum distance to next part in order to ensure proper air circulation at full output power. – free air location: the converter should be moun ted with fins in a vertical position to achieve maximum airflow through the heat sink. tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 20 of 35 150 W DC-DC and AC-DC Converters ## K Series **==> picture [482 x 242] intentionally omitted <==** **----- Start of picture text -----**<br> 5 47.2 6.5<br>38.5 11027 European<br>Projection<br>11.8<br>17.3 133.4 [ ±0.2]<br>30<br>168<br>6.5 11.2<br>140 127<br>13<br>**----- End of picture text -----**<br> _Fig. 25_ _Option B: Aluminum case K02 with large cooling plate; black finish (EP powder coated). Suitable for front mounting. Total weight approx. 1.3 kg_ **==> picture [492 x 231] intentionally omitted <==** **----- Start of picture text -----**<br> 38.5 50 7 TE 4 TE<br>5 158 3.27<br>11.8<br>09003b<br>M 4<br>Measuring point of<br>case temperature T C<br>17.3 133.4 47.2 5<br>168<br>(171.0 ... 171.9)<br>5<br>101<br>111 (3U)<br>**----- End of picture text -----**<br> ## _Fig. 26_ _Option B1: Aluminum case K02 with small cooling plate; black finish (EP powder coated). Suitable for mounting with access from the backside. Total weight approx. 1.2 kg._ **Note:** Long case with option B2, elongated by 60 mm for 220 mm rack depth, is available on request (no LEDs, no test sockets). **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 21 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Safety and Installation Instructions** ## **Connector Pin Allocation** The connector pin allocation table defines the electrical potentials and the physical pin positions on the H15 or H15-S4 connector. The protective earth is connected by a leading pin (no. 24), ensuring that it makes contact with the female connector first. **==> picture [149 x 199] intentionally omitted <==** **----- Start of picture text -----**<br> 10010b<br>Fixtures for connector<br>retention clips HZZ01209G<br>(see Accessories )<br>32 4<br>Connector type H15<br>Fixtures for connector<br>retention clips HZZ01209G<br>(see Accessories )<br>30/32 4/6<br>Connector type H15S4<br>**----- End of picture text -----**<br> _Fig. 27 View of module’s male connectors_ _Table 13: H15 and H15-S4 connector pin allocation_ |**Pin**<br>**No.**|<br>**Connector type H15-S4**<br>**AK1000 (all),**<br>**BK – LK1001 except opt. K**<br>**AK2000**|<br>**Connector type H15-S4**<br>**AK1000 (all),**<br>**BK – LK1001 except opt. K**<br>**AK2000**|<br>**Connector type H15-S4**<br>**AK1000 (all),**<br>**BK – LK1001 except opt. K**<br>**AK2000**|<br>**Connector type H15-S4**<br>**AK1000 (all),**<br>**BK – LK1001 except opt. K**<br>**AK2000**|**Connector type H15**|**Connector type H15**||| |---|---|---|---|---|---|---|---|---| ||||**AK2000**||**BK – LK1301/1501/1601**<br>**BK – LK1001 with opt. K**||**BK – LK2000**|| |4|Vo+|Positive Output 1|Vo2+|Positive Output 2|Vo+|Positive Output 1|Vo2+|Positive Output 2| |6|||||Vo+||Vo2+|| |8|Vo-|Negative Output 1|Vo2-|Negative Output 2|Vo-|Negative Output 1|Vo2-|Negative Output 2| |10|||||Vo-||Vo2-|| |12|S+|Sense positive|Vo1+|Positive Output 1|S+|Positive Sense|Vo1+|Positive Output 1| |14|S1-|Sense negative|Vo1-|Negative Output 1|S1-|Negative Sense|Vo1-|Negative Output 1| |16|R1|Control of_V_o|R1|Control_V_o1|R1|Control of_V_o|R1|Control_V_o1| |18|i|Inhibit|i|Inhibit|i|Inhibit|i|Inhibit| |20|D3<br>V3|Save data|D3|Save data|D3|Save data|D3|Save data| |||ACFAIL||||||| |22|T5|Current sharing|T5|Current sharing|T5|Current sharing|T5|Current sharing| |242||Protective earth||Protective earth||Protective earth||Protective earth| |26|Vi+ N~~~ ~~4|Positive Input|Vi+|Positive Input|Vi+ N~~~ ~~4|Positive Input|Vi+ N~~~ ~~4|Positive Input| |28||Neutral line4|||Vi+ N~~~ ~~4|Neutral line4|Vi+ N~~~ ~~4|Neutral line4| |30|Vi- L~~~ ~~4|Negative Input|Vi-|Negative Input|Vi- L~~~ ~~4|Negative Input|Vi- L~~~ ~~4|Negative Input| |32||Phase line4|||Vi- L~~~ ~~4|Phase line4|Vi- L~~~ ~~4|Phase line4| 1 Not connected, if option P is fitted. 2 Leading pin (pre-connecting) 3 Option D excludes option V and vice versa. Pin 20 is not connected, unless option D or V is fitted. 4 LK models 5 Only connected, if option T is fitted. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 22 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Installation Instructions** **Note:** These converters have no power factor correction (PFC). The LK4000/5000 models are intended to replace the LK1000 and LK2000 converters in order to comply with IEC/EN 61000-3-2. LK1000 is replaced by LK4003 with option K. The converters are components, intended exclusively for inclusion within other equipment by an industrial assembly operation or by professional installers. Installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings, and segregation requirements of the end-use application. Connection to the system shall be made via the female connector H15 (standard) or H15S4; see _Accessories._ Other installation methods may not meet the safety requirements. Pin no. 24 ( ) is connected with the case. For safety reasons it is essential to connect this pin reliably to protective earth. ~~~~~ The input pins 30/32 (Vi– or L ~~)~~ are connected via a built-in fuse, which is designed to protect in the case of a converter failure. An additional external fuse, suitable for the application, might be necessary in the wiring to the other input 26/28 (Vi+ or N ~~~)~~ or even to pins 30/32, particularly if: - Local requirements demand an individual fuse in each source line - Phase and neutral of the AC mains are not defined or cannot be assigned to the corresponding terminals. - Neutral and earth impedance is high or undefined ## **Notes:** - If the inhibit function is not used, pin no. 18 (i) should be connected with pin no. 14 to enable the output(s). - Do not open the converters, or warranty will be invalidated. - Due to high current values, the converters provide two internally parallel contacts for certain paths (pins 4/6, 8/10, 26/28 and 30/32). It is recommended to connect both female connector pins of each path in order to keep the voltage drop low and avoid excessive connector currents. - If the second output of double-output models is not used, connect it parallel with the main output. Make sure that there is sufficient airflow available for convection cooling and verify it by measuring the case temperature _T_ C, when the converter is installed and operated in the end-use application; see _Thermal Consider ations._ Ensure that a converter failure (e.g, an internal short- circuit) does not result in a hazardous condition. ## **Standards and Approvals** The converters are safety-approved according to the latest edition of IEC/EN 60950-1 and UL/CSA 60950-1. The converters correspond to Class I equipment and have been evaluated for: - Building-in - Basic insulation between input and case based on 250 VAC, and double or reinforced insulation between input and output(s) - Functional insulation between outputs - Overvoltage category II - Pollution degree 2 environment - Max. altitude: 2000 m - The converters fulfil the requirements of a fire enclosure. The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and ISO 9001:2015. A CB-scheme is available. ## **Railway Applications and Fire Protection** The converters have been designed by observing the railway standards EN 50155, EN 50121-3-2, and EN 50121-4. All boards are coated with a protective lacquer. The converters with version V108 (or later, but not models with H15S4 connector: 5 V output without option K) comply with NF-F16 (I2/F1). They also comply with EN 45545-1, EN 45545-2 (2016), if installed in a technical compartment or cabinet. ## **Protection Degree and Cleaning Liquids** Condition: Female connector fitted to the converter. - IP 30: All models except those with option P, and except those with option D or V including a potentiometer. - IP 20: All models fitted with option P, or with option D or V with potentiometer. In order to avoid damage, any penetration of cleaning fluids has to be prevented, since the power supplies are not hermetically sealed. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 23 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Isolation and Protective Earth** The electric strength test is performed in the factory as routine test in accordance with EN 50514 and IEC/EN 60950. The company will not honor any warranty claims resulting from incorrectly executed electric strength field tests. The resistance between earth connection and case (<0.1 Ω) is tested as well. ## _Table 14: Isolation_ |_Table 14: Isolation_|||||| |---|---|---|---|---|---| |**Characteristics**||**Input to**<br>**Case + Output(s)**|**Output(s) to**<br>**Case**|**Output 1 to**<br>**Output 2**|**Unit**| |Electric strength test|Factory test 10 s|2.81|1.4|0.15|kVDC| ||AC test voltage equivalent to factory test|2.01|1.0|0.1|kVAC| |Insulation resistance at 500 VDC||>300|>300|>1002|MΩ| |Creepage distances||≥ 3.23|---|---|mm| 1 According to EN 50514 and IEC/EN 60950, subassemblies connecting input to output are pre-tested with 5.6 kVDC or 4 kVAC. 2 Tested at 150 VDC 3 Input to outputs: 6. 4 mm ## **Leakage Currents** Leakage currents flow due to internal leakage capacitances and Y-capacitors. The current values are proportional to the supply voltage and are specified in the table below. _Table 15: Earth leakage currents for LK models_ |**Characteristics**||**Class I**|**Unit**| |---|---|---|---| |Max. leakage current|Permissible accord. to IEC/EN 60950|3.5|mA| ||Typ. value at 264 V, 50 Hz|1.43|| ## **LK Models Operated at Greater than 63 Hz** Above 63 Hz, the earth leakage current may exceed 3.5 mA, the maximum value allowed in IEC 60950. Frequencies ≥ 350 Hz only permitted with _V_ i ≤ 200 VAC. The built-in Y-caps are approved for ≤100 Hz. Safety approvals and CB scheme cover only 50 – 60 Hz. ## **Safety of Operator-Accessible Output Circuits** If the output circuit of a **DC-DC converter** is operator-accessible, it shall be an SELV circuit according to the standard IEC 60950-1. The following table shows some possible installation configurations, compliance with which causes the output circuit of the converter to be an SELV circuit according to IEC 60950-1 up to a configured output voltage (sum of nominal voltages if in series or +/– configuration) of 36 V. However, it is the sole responsibility of the installer to assure the compliance with the rapplicable safety regulations. **==> picture [406 x 107] intentionally omitted <==** **----- Start of picture text -----**<br> ≤150 VAC or VDC for AK, BK 10044a<br>≤250 VAC or VDC for CK, DK, EK, FK, LK<br>+<br>AC-DC DC-DC<br>Mains front + Battery Fuse con- SELV<br>end Fuse verter<br>–<br>≤150 VAC or VDC for AK, BK<br>≤250 VAC or VDC for CK, DK, EK, FK, LK<br>Earth connection<br>**----- End of picture text -----**<br> _Fig. 28 Schematic safety concept._ _Use earth connections as per the table below._ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 24 of 35 ## K Series 150 W DC-DC and AC-DC Converters _Table 16: Safety concept leading to an SELV output circuit_ |**Conditions**|**Front end**|||**DC-DC converter**|**DC-DC converter**|**Result**| |---|---|---|---|---|---|---| |Nominal supply<br>voltage|Minimum required grade<br>of insulation, to be<br>provided by the AC-DC<br>front end, including<br>mains supplied battery<br>charger|Nominal DC output voltage<br>from the front end|Minimum required<br>safety status of the<br>front end output<br>circuit|Types|Measures to achieve the specifed<br>safety status of the output circuit|Safety status<br>of the DC-DC<br>converter<br>output circuit| |Mains ≤150 VAC|Functional (i.e. there is<br>no need for electrical<br>insulation between<br>the mains supply<br>voltage and the DC-DC<br>converter input voltage)|≤ 100 V<br>(The nominal voltage between<br>any input pin and earth can be<br>up to 150 VAC or DC)|Primary circuit|AK<br>BK|Double or reinforced insulation,<br>based on the mains voltage and2<br>(provided by the DC-DC converter)<br>and earthed case3|SELV circuit| |Mains ≤ 250 VAC||≤ 400 V<br>(The nominal voltage between<br>any input pin and earth can be<br>up to 250 VAC or 400 VDC)||CK<br>DK<br>EK<br>FK||| ||Basic|≤ 400 V|Unearthed<br>hazardous voltage<br>secondary circuit|AK<br>BK<br>CK<br>DK<br>EK<br>FK|Supplementary insulation, based on<br>250 VAC and double or reinforced<br>insulation2(provided by DC-DC<br>converter) and earthed case3.|| ||||Earthed hazardous<br>voltage secondary<br>circuit||Double or reinforced insulation2<br>(provided by the DC-DC converter)<br>earthed case3|| ||Double or reinforced|≤ 60 V|SELV circuit||Functional insulation <br>(provided by the DC-DC converter)4|| |||≤ 120 V|TNV-3 circuit||Basic insulation<br>(provided by the DC-DC converter)4|| - 1 The front end output voltage should match the specified input voltage range of the DC-DC converter. - 2 Based on the maximum nominal output voltage from the front end. - 3 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950-1. - 4 Earthing of the case is recommended, but not mandatory. If the output circuit of an **AC-DC converter** is operator-accessible, it shall be an SELV circuit according to standard IEC 60950-1. The following table shows some possible installation configurations, compliance with which causes the output circuit of **LK models** to be SELV according to IEC 60950-1 up to a configured output voltage (sum of nominal voltages if in series or +/– configuration) of 36 V. If the LK converter is used as DC-DC converter, refer to the previous section. **==> picture [235 x 82] intentionally omitted <==** **----- Start of picture text -----**<br> 10021a<br>Fuse<br>~ +<br>Mains Fuse AC-DC SELV<br>~ con- –<br>verter<br>Earth<br>connection<br>**----- End of picture text -----**<br> ## _Fig. 29_ _Schematic safety concept. Use earth connection as per table 17. Use fuses if required by the application; see also Instal. Instructions._ _Table 17: Safety concept leading to an SELV output circuit_ |**Conditions**|**AC-DC converter**|**Installation**|**Result**| |---|---|---|---| |Nominal voltage|Grade of insulation between input and<br>output provided by the AC-DC converter|Measures to achieve the resulting<br>safety status of the output circuit|Safety status of the AC-DC<br>converter output circuit| |Mains ≤ 250 VAC|Double or reinforced|Earthed case1and installation|SELV circuit| 1 The earth connection has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 25 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Description of Options** _Table 18: Survey of options_ |**on**|**Function of option**|**Characteristics**| |---|---|---| |7|Extended operational ambient temperature range|_T_A= – 25 to 71 °C| ||Electronic inrush current limitation circuitry|Active inrush current limitation| |2|Potentiometer for fne adjustment of output voltage|Adjustment range +10/– 60% of_V_o nom, excludes R-input| |1|Input and/or output undervoltage monitoring circuitry|Safe data signal output (D0 – DD)| |1|Input and/or output undervoltage monitoring circuitry|ACFAIL signal according to VME specifcations (V0, V2, V3)| ||Current sharing|Interconnect T-pins for parallel connection (max 5 converters)| ||Standard H15 Connector|H15 standard connector instead H15-S4 for models with Vo = 5.1 V)| |, B2|Cooling plate (160 or 220 mm long)|Replaces the standard heat sink, allowing direct chassis-mounting| |-G|RoHS-compliant for 5 substances|Tin-lead solder| > 1 Option D excludes option V and vice versa; option V only for 5.1 V outputs. 2 Option P is not available for battery charger models. ## **-7 Temperature Range** Option -7 designates converters with an operational ambient temperature range of –25 to 71 °C. Not for new designs. ## **E Inrush Current Limitation** CK/DK/EK/LK models may be supplemented by an electronic circuit (option E, replacing the standard built-in NTC resistor) to achieve an enhanced inrush current limiting function (not available with AK/BK/FK types). Option E is mandatory for all CK/DK/ EK/LK models with option -9. The figure below shows two consecutive peaks of the inrush current, the first one is caused by _V_ i/ _R_ v and the second one by the rising current across the FET. The shape of the curve depends on model, but the tables below show the higher of both peaks. |||||||||||||||||||||||||_I_inr[A]|_I_inr[A]|_I_inr[A]|Capacitor_C_i|Capacitor_C_i||||| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| |||||LK models|||||||||||||||10017b|||||_V_i/_R_v|||Normal operation<br>(FET fully conducting)<br>fully charged|||||| |||||||||||||||||||||||||||||||||| |||||Input Filter|||||Control<br>FET|||||||||_C_i|||Converter|||||||_I_i=_P_i/_V_i||||| |||||||||||||||||||||||||||||||||| ||||||||||_R_s||_R_St|||||||||||||0|||_t_[ms]<br>11039a|||||| ||||||||||||||||||||||||||0|||_t_inr||||| |_Fig. 30_||||||||||||||||||||||||_Fig. 31_||||||||| |_Block diagram of option E_<br>_Current limiting resistance R_v_= R_s_+ R_St_=_||||||||||||||_15_|||_Ω_|||||||_Inrush current with option E (DC supply)_<br>_2 diferent wave shapes depending on model_||||||||| |_Table_||_19a: Inrush current at_|||||_V_i nom_(DC supply)_|||||||||||_and I_o nom||||||_Table 19b: Inrush current at V_i max_(DC supply) and I_o nom||||||||| ||**Characteristics**||||||||**CK**|||**DK**|||**EK**||||||**LK**||**Unit**|**Characteristics**||||**CK**<br>**DK**<br>**EK**||**LK**||**Unit**| ||_V_o nom|||Input voltage|||||60|||110|||220||||||310||V|_V_o max|Input voltage|||140<br>220<br>385||372||V| ||_I_inrp|||Peak inrush current|||||6.5|||7.4|||14.6||||||21||A|_I_inrp|Peak inrush current|||9<br>14.5<br>25.7||24.8||A| ||_t_inr|||Inrush current duration|||||25|||14|||16||||||12||ms|_t_inr|Inrush current||duration|30<br>14<br>12||12||ms| CK models fitted with option E and option D6 (input voltage monitor) meet the standard ETS 300132-2 for 48 VDC supplies. Option D6 is necessary to disable the converter at low input voltage, such avoiding an excessive input current. Connect output D (pin 20) with inhibit (pin 18). Option D6 should be adjusted with the potentiometer to a threshold of 36 – 40.5 V for 48 V batteries and to 44 – 50 V for 60 V batteries. Refer also to the description of option D. **Note:** Subsequent switch-on cycles at start-up are limited to max. 10 cycles during the first 20 s (cold converter) and then to max. 1 cycle every 8 s. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 26 of 35 ## K Series 150 W DC-DC and AC-DC Converters LK models powered by 230 VAC/ 50 Hz exhibit an inrush current as per the fig. below, when switched on at the peak of _V_ i. In this case, the inrush current _I_ inr p is 21.7 A and its duration _t_ inr is 5 ms. This is the worst case. If the LK converter is switched on in a different moment, _I_ inr p is much lower, but _t_ inr rises up to 10 ms. **==> picture [245 x 199] intentionally omitted <==** **----- Start of picture text -----**<br> I i [A]<br>20<br>15<br>Capacitor Ci<br>10 fully charged<br>Normal operation<br>5 (FET fully conducting)<br>0<br>–5<br>–10<br>t inr<br>–15 10065a t [ms]<br>0 20 40 60 80<br>**----- End of picture text -----**<br> _Fig. 32_ _Inrush current for LK models with option E (AC supply); V_ i _= 230 VAC, f_ i _= 50 Hz, P_ o _= P_ o nom ## **P Potentiometer** A potentiometer provides an output voltage adjustment range of +10/–60% of _V_ o nom. It is accessible through a hole in the front cover. Option P is not available for battery charger models and is not recommended for converters connected in parallel. Option P excludes the R-function. With double-output models, both outputs are influenced by the potentiometer setting (doubling the voltage, if the outputs are in series). **Note** : If the output voltages are increased above _V_ o nom via R input control, option P setting, remote sensing, or option T, the output current(s) should be reduced, so that _P_ o nom is not exceeded. ## **T Current Sharing** This option ensures that the output currents are approximately shared between all parallel-connected converters, hence increasing system reliability. To use this facility, simply interconnect the T pins of all converters and make sure that the reference for the T signal, pin 14 (S– or Vo1–), are also connected together. The load lines should have equal length and cross section to ensure equal voltage drops. Not more than 5 converters should be connected in parallel. The R pins should be left open-circuit. If not, the output voltages must be individually adjusted prior to paralleling within 1 to 2% or the R pins should be con nected together. **Note:** Parallel connection of con verters with option P is not recom men ded. **==> picture [147 x 145] intentionally omitted <==** **----- Start of picture text -----**<br> 11003a<br>Vo+<br>Load<br>Vo–<br>Vo+<br>Vo–<br>Vo+<br>Vo–<br>**----- End of picture text -----**<br> _Fig.33_ _Example of poor wiring for parallel connection (unequal length of load lines)_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 27 of 35 ## K Series 150 W DC-DC and AC-DC Converters **==> picture [227 x 221] intentionally omitted <==** **----- Start of picture text -----**<br> 11036b<br>Vo+ 2 1<br>S+<br>T 1<br>Converter<br>S–<br>Vo–<br>Load<br>Vo+ 2<br>S+<br>T 1<br>Converter<br>S–<br>Vo– 1<br>Max. 5 converters in parallel connection<br>1 Lead lines should have equal length and cross section, and should run<br> in the same cable loom.<br>2 Diodes recommended in redundant operation only<br>**----- End of picture text -----**<br> **==> picture [236 x 209] intentionally omitted <==** **----- Start of picture text -----**<br> Power bus<br>11037b + –<br>Vo2+<br>Vo2–<br>T<br>Converter<br>Vo1+<br>Vo1–<br>Load<br>Vo2+<br>Vo2–<br>T<br>Converter<br>Vo1+<br>Vo1–<br>**----- End of picture text -----**<br> Max. 5 converters in parallel connection ## _Fig. 34_ _Parallel connection of single-output models using option T with the sense lines connected at the load_ _Fig. 35_ _Parallel connection of double-output models with the outputs connected in series, using option T. The signal at the T pins is referenced to Vo1–._ ## **D Undervoltage Monitor** The input and/or output undervoltage monitor operates in dependently of the built-in input undervoltage lockout circuit. A logic “low” signal (output with self-conducting JFET) or “high” signal (NPN open-collector output) is generated at the D output (pin 20), when one of the monitored voltages drops below the preselected threshold level _V_ t. This signal is referenced to S–/Vo1–. The D output recovers, when the monitored voltages exceed accessible through a hole in the front cover, or adjusted in the factory to a fixed value specified by the customer. _V_ t + _V_ h. The threshold levels _V_ ti and _V_ to are either adjusted by a potentio meter, Option D exists in various versions D0 – DD, as shown in table 21. D0 and D9 are adjusted according to customer’s request and receive a customer-specific model number. |**Output type**<br>**JFET**<br>**NPN**|**Output type**<br>**JFET**<br>**NPN**|**Monitoring**<br>**_V_i**<br>**_V_o or ****_V_o1**|**Monitoring**<br>**_V_i**<br>**_V_o or ****_V_o1**|**Minimum adjustment range of**<br>**threshold level****_V_t**<br>**_V_ti**<br>**_V_t o**|**Minimum adjustment range of**<br>**threshold level****_V_t**<br>**_V_ti**<br>**_V_t o**|**Typ. hysteresis****_V_ho [% of****_V_t]**<br>**for****_V_t min**–**_V_t max**<br>**_V_hi**<br>**_V_ho**|**Typ. hysteresis****_V_ho [% of****_V_t]**<br>**for****_V_t min**–**_V_t max**<br>**_V_hi**<br>**_V_ho**|**Number of**<br>**potentiometers**| |---|---|---|---|---|---|---|---|---| |D1|D5|no|yes|---|3.5 V – _V_o BR 1|---|2.5 – 0.6 V|1| |D2|D6|yes|no|_V_i min–_V_i max 1|---|3.4 – 0.4 V|---|1| |D3|D7|yes|yes|_V_i min–_V_i max 1|(0.95 – 0.985_V_o)2|3.4 – 0.4 V|“0”|1| |D4|D8|no|yes|---|(0.95 – 0.985_V_o)2|---|“0”|---| |D0|5<br>D95|no|yes|---|3.5 V – _V_o BR 3|---|2.5 – 0.6 V|---| |||yes|no|_V_i min–_V_i max 3, 4|---|3.4 – 0.4 V|---|| |||yes|yes|_V_i min–_V_i max 3, 4|3.5 V – _V_o BR 3, 4|3.4 – 0.4 V|2.5 – 0.6 V|| |||yes|yes|_V_i min–_V_i max 3, 4|(0.95 – 0.985_V_o)2|3.4 – 0.4 V|“0”|| |---|DD|yes|yes|_V_i min–_V_i max 1|3.5 V – _V_o BR 1|3.4 – 0.4 V|2.5 – 0.6 V|2| > 1 Threshold level adjustable by potentiometer; see Electrical Output Data for _V_ o BR. > 2 Fixed value. Tracking if _V_ o/ _V_ o1 is adjusted via R-input, option P, or sense lines. > 3 The threshold level permanently adjusted according to customer specification ±2% at 25 °C. Any value within the specified range is basically possible, but causes a special type designation in addition to the standard option designations (D0/D9). See Electrical Output Data for _V_ o BR. > 4 Adjustment at _I_ o nom. 5 Customer-specific part number **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 28 of 35 ## K Series 150 W DC-DC and AC-DC Converters ## **JFET output (D0 – D4):** Pin D is internally connected via the drain-source path of a JFET (self-conducting type) to the negative potential of output 1. _V_ D ≤ 0.4 V (logic low) corresponds to a monitored voltage level ( _V_ i and/or _V_ o1) < _V_ t. The current _I_ D through the JFET should not exceed 2.5 mA. The JFET is protected by a 0.5 W Zener diode of 8.2 V against external overvoltages. ## **NPN output (D5 – DD):** Pin D is internally connected via the collector-emitter path of a NPN transistor to the negative potential of output 1. _V_ D < 0.4 V (logic low) corresponds to a monitored voltage level ( _V_ i and/or _V_ o1) > _V_ t + _V_ h. The current _I_ D through the open collector should not exceed 20 mA. The NPN output is not protected against external overvoltages. _V_ D should not exceed 40 V. _Table 21: JFET output (D0 -- D4)_ – _Table 22: NPN output (D5 DD)_ **==> picture [508 x 213] intentionally omitted <==** **----- Start of picture text -----**<br> V b, V o1 status D output, V D V b, V o1 status D output, V D<br>V b or V o1 < V t low, L, V D ≤ 0.4 V at I D = 2.5 mA V b or V o1 < V t high, H, I D ≤ 25 µA at V D = 40 V<br>V b and V o1 > V t + V h high, H, I D ≤ 25 µA at V D = 5.25 V V b and V o1 > V t + V h low, L, V D ≤ 0.4 V at I D = 20 mA<br>11006a 11007a<br>Vo+/Vo1+ Vo+/Vo1+<br>R R<br>p p<br>I D I D<br>20 20<br>Self-conducting D NPN open D<br>junction FET collector<br>V D V D<br>14 14<br>S–/Vo1– S–/Vo1–<br>Fig. 36 Fig. 37<br>Option D0 – D4: JFET output, I D ≤ 2.5 mA Option D5 – DD: NPN output, V o ≤ 40, I D ≤ 2.5 mA<br>Input Input<br>**----- End of picture text -----**<br> ## **Threshold tolerances and hysteresis:** If _V_ i is monitored, the internal input voltage after the input filter is measured. Consequently this voltage differs from the voltage at the connector pins by the voltage drop ∆ _V_ ti across the input filter. The threshold levels of the D0 and D9 options are factory adjusted at nominal output current _I_ o nom and _T_ A = 25 °C. The value of ∆ _V_ ti depends upon input voltage range (CK, DK, ..), threshold level _V_ t, temperature, and input current. The input current is a function of the input voltage and the output power. **==> picture [245 x 132] intentionally omitted <==** **----- Start of picture text -----**<br> VD ∆Vti Vhi 11021a<br>V<br>D high<br>VD low<br>Vi<br>Vti<br>o nom o nom<br> = 0 = 0<br>o o<br>P = P P = P<br>o o<br>P P<br>**----- End of picture text -----**<br> _Fig. 38 Definition of V_ ti, ∆ _V_ t i _and_ ∆ _V_ hi _(JFET output)_ _Table 23: D-output logic signals_ |_Table 23: D-output logic signals_|||| |---|---|---|---| |**Version of D**|**_V_i <****_V_t or****_V_o <****_V_t**|**_V_i >****_V_t +****_V_h or****_V_o >****_V_t**|**Confguration**| |D1, D2, D3, D4, D0|low|high|JFET| |D5, D6, D7, D8, D9, DD|high|low|NPN| **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 29 of 35 ## K Series 150 W DC-DC and AC-DC Converters **==> picture [490 x 542] intentionally omitted <==** **----- Start of picture text -----**<br> Input voltage monitoring<br>NPN V D<br>V 11008a<br>D high<br>3 3 3 3<br>V D low<br>0 t<br>I D<br>I<br>D high<br>I D low<br>0 t<br>JFET VD<br>V<br>D high<br>V D low<br>0 t<br>t h1 t low min4 t low min4 t low min4 t high min<br>V o1<br>V o1 nom t h1<br>1<br>0.95<br>0 t<br>V i [VDC]<br>V ti+ V hi<br>V ti<br>0 t<br>Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent<br>input voltage failure<br>Output voltage monitoring<br>NPN V V D 2<br>D high<br>3 3<br>V D low<br>0 t<br>1 Hold-up time see Electrical Input Data<br>I D high I D 2 With output voltage monitoring, hold-up time t h = 0<br>3 The signal remains high, if the D output is connected<br>I D low to an external source<br>0 t 4 t low min = 100 – 170 ms, typ. 130 ms<br>JFET V D<br>V<br>D high<br>V D low<br>0 t<br>t low min4<br>V o1<br>V o1 nom<br>V to+ V ho<br>V to<br>0 t<br>Output voltage failure<br>**----- End of picture text -----**<br> _Fig. 39 Relationship between V_ i _, V_ o _, V_ D _, V_ o _/V_ o nom _versus time_ _Table 24: Option V: Factory potentiometer setting of V_ ti _with resulting hold-up time_ |**Mod**|**el**<br>**AK**|**BK**|**FK**|**CK**|**DK**|**EK**|**LK**|**Unit**| |---|---|---|---|---|---|---|---|---| |_V_t i|9.5|19.5|39|39|61|97|120|VDC| |_t_h|0.1|0.1|3.4|1.1|1.1|2.7|4.2|ms| **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 30 of 35 K Series 150 W DC-DC and AC-DC Converters ## **V ACFAIL signal (VME)** ## Available for units with _V_ o nom = 5.1 V only. This option defines an undervoltage monitoring circuit for the input or for the input and main output voltage ( 5.1 V) similar to option D and generates an ACFAIL signal (V signal), which conforms to the VME standard. The low state level of the ACFAIL signal is specified at a sink current of _I_ V ≤ 48 mA to _V_ V ≤ 0.6 V (open-collector output of an NPN transistor). The pull-up resistor feeding the open-collector output should be placed on the VME back plane. After the ACFAIL signal has gone low, the VME standard requires a hold-up time _t_ h of at least 4 ms, before the 5.1 V output drops to 4.875 V, when the output is fully loaded. This hold-up time _t_ h is provided by the internal input capacitance. Consequently the working input voltage and the threshold level _V_ ti should be adequately above _V_ i min of the converter, so that enough energy is remaining in the input capacitance. If _V_ i is below the required level, an external hold-up capacitor ( _C_ i ext) should be added; refer to the formulas below: ## where as: **==> picture [454 x 75] intentionally omitted <==** > 1 _V_ i min see _Electrical Input Data_ . For output voltages _V_ o > _V_ o nom, _V_ i min increases proportionally to _V_ o/ _V_ o nom. **Note** : Option V2 and V3 can be adjusted by the potentiometer to a threshold level between _V_ i min and _V_ i max. A decoupling diode should be connected in series with the input of AK – FK converters to avoid the input capacitance discharging through other loads connected to the same source voltage. _Table 25: Undervoltage monitor functions_ |**Option**|**Monitoring**<br>**_V_i**<br>**_V_o or ****_V_o1**|**Monitoring**<br>**_V_i**<br>**_V_o or ****_V_o1**|**Minimum adjustment range of**<br>**threshold level****_V_t**<br>**_V_ti**<br>**_V_t o**|**Minimum adjustment range of**<br>**threshold level****_V_t**<br>**_V_ti**<br>**_V_t o**|**Typical hysteresis****_V_h [% of****_V_t]**<br>**for****_V_t min**–**_V_t max**<br>**_V_hi**<br>**_V_ho**|**Typical hysteresis****_V_h [% of****_V_t]**<br>**for****_V_t min**–**_V_t max**<br>**_V_hi**<br>**_V_ho**| |---|---|---|---|---|---|---| |V2|yes|no|_V_i min–_V_i max 1|---|3.4 – 0.4 V|---| |V3|yes|yes|_V_i min–_V_i max 1|0.95 – 0.985_V_o1<br>2|3.4 – 0.4 V|“0”| |V0|yes|no|_V_i min–_V_i max 3, 4|---|3.4 – 0.4 V|---| ||yes|yes|_V_i min–_V_i max 3, 4|0.95 – 0.985_V_o1<br>2|3.4 – 0.4 V|“0”| > 1 Threshold level adjustable by potentiometer. > 2 Fixed value between 95% and 98.5% of _V_ o1 (tracking). > 3 Adjusted at _I_ o nom. 4 Fixed value, resistor-adjusted (±2% at 25°C) accord. to customer’s specification; individual type number is determined by the company. Option V operates independently of the built-in input under voltage lockout circuit. A logic “low” signal is generated at pin 20, as soon as one of the monitored voltages drops below the pre selected threshold level _V_ t. The return for this signal is accessible through a hole in the front cover, or adjusted in the factory to a determined customer-specific value. Refer to table 26.S–. The V output recovers, when the monitored voltages exceed _V_ t + _V_ h. The threshold level _V_ t i is either adjustable by a potentiometer, ## **V output (V0, V2, V3):** Pin V is internally connected to the open collector of an NPN transistor. The emitter is connected to S–. _V_ V ≤ 0.6 V (logic low) corresponds to a monitored voltage level ( _V_ i and/or _V_ o) < _V_ t. _I_ V should not exceed 50 mA. The V output is not protected against external overvoltages: _V_ V should not exceed 60 V. ## Threshold tolerances and hysteresis: If _V_ i is monitored, the internal input voltage is measured after the input filter. Consequently this voltage differs from the voltage at the connector pins by the voltage drop ∆ _V_ ti across the input filter. The threshold level of option V0 is adjusted in the factury at _I_ o nom and _T_ A = 25 °C. The value of ∆ _V_ ti depends upon the input voltage range (AK, BK, etc.), threshold level _V_ t, temperature, and input current. The input current is a function of input voltage and output power. _Table 26: NPN-output (V0, V2, V3)_ |**_V_i, ****_V_o1 status**|**V output,****_V_v**| |---|---| |_V_ior_V_o1<_V_t|low, L,_V_V≤ 0.6 V at_I_V= 50 mA| |_V_iand_V_o1>_V_t+_V_h|high, H,_I_V≤ 25 µA at_V_V= 5.1 V| **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 31 of 35 ## K Series ## 150 W DC-DC and AC-DC Converters **==> picture [224 x 131] intentionally omitted <==** **----- Start of picture text -----**<br> Vo+ 11009a<br>R<br>I V p<br>20<br>NPN open V<br>collector<br>V V<br>14<br>S–<br>Fig. 40<br>Output configuration of options V0, V2 and V3<br>Input<br>**----- End of picture text -----**<br> **==> picture [215 x 129] intentionally omitted <==** **----- Start of picture text -----**<br> VV ∆Vti Vhi<br>VV high 11023a<br>VV low<br>Vti Vi<br>Fig. 41<br>Definition of V ti , ∆V ti and V hi<br>o nom o nom<br> = 0 = 0<br>o o<br>P = P P = P<br>o o<br>P P<br>**----- End of picture text -----**<br> **==> picture [470 x 488] intentionally omitted <==** **----- Start of picture text -----**<br> Input voltage monitoringV2 V V high V V 3 3 t low min 2 4 t low min 2 3 t low min 2 4 11010a<br>V V low<br>0 t<br>V3 V V high V V 3 3 t low min 2 3 t low min 2<br>V V low<br>0 t<br>V o t h 1 t h 1<br>5.1 V<br>4.875 V<br>2.0 V<br>0 t<br>V i [VDC]<br>V ti + V hi<br>V ti<br>0 t<br>Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent<br>input voltage failure<br>Output voltage monitoring<br>V2 V V<br>V V high<br>V V low 4 4<br>0 t<br>V3 V V high V V 4 3 3 t low min 2 12 VME request: minimum 4 mstlow min = 40 – 200 ms, typ 80 ms<br>V V low0 t 34 VThe V signal drops simultaneously with VV level not defined at Vo < 2.0 V o, if the pull-up<br>resistor R P is connected to Vo+; the V signal remains<br>Vo high if R P is connected to an external source.<br>5.1 V<br>4.875 V<br>2.0 V<br>0 t<br>V i<br>V ti + V hi<br>V ti<br>0 t<br>Output voltage failure<br>**----- End of picture text -----**<br> _Fig. 42 Relationship between V_ b _, V_ o _, V_ D _, V_ o _/V_ o nom _versus time_ **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 32 of 35 K Series 150 W DC-DC and AC-DC Converters ## **K Standard H15 Connector** Option K is available only for 5.1 V output models in order to avoid the connector with high current contacts. Efficiency is approx. 1.5% worse. ## **B, B1, B2 Cooling Plate** Where a cooling surface is available, we recommend the use of a cooling plate instead of the standard heat sink. The mounting system should ensure that the maximum case temperature _T_ C max is not exceeded. The cooling capacity is calculated by (η see _Model Selection)_ : **==> picture [113 x 24] intentionally omitted <==** For the dimensions of the cooling plates, see _Mechanical Data_ . Option B2 is for customer-specific models with elongated case (for 220 mm DIN-rack depth). ## **G RoHS** RoHS-compliant for all six substances. **==> picture [141 x 50] intentionally omitted <==** tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 33 of 35 K Series 150 W DC-DC and AC-DC Converters ## **Accessories** A variety of electrical and mechanical accessories are available including: - Front panels for 19” DIN-rack: Schroff or Intermas, - 12 TE /3U; see fig. 43. – Mating H15 connectors with screw, solder, faston, or press-fit terminals, code key system and coding wedges HZZ00202-G; see fig. 44. - Pair of connector retention clips HZZ01209-G; see fig. 45 - Connector retention brackets HZZ01216-G; see fig. 46 - Cage clamp adapter HZZ00144-G; see fig. 47 - Different cable hoods for H15 connectors (fig. 48): - HZZ00141-G, screw version - HZZ00142-G, use with retention brackets HZZ01218-G - HZZ00143-G, metallic version providing fire protection - Chassis or wall-mounting plate K02 (HZZ01213-G) for models with option B1. Mating connector (HZZ00107-G) with screw terminals; see fig. 49 - DIN-rail mounting assembly HZZ0615-G (DMB-K/S); see fig. 50 - Additional external input and output filters - Different battery sensors S-KSMH... for using the converter as a battery charger. Different cell characteristics can be selected; see fig. 51, table 27, and _Battery Charging/Temperature Sensors._ **For additional accessory product information, see the accessory data sheets listed with each product series or individual model at our web site.** _Fig. 44 Different mating connectors_ _Fig. 43 Different front panels_ _Fig.45_ _Connector retention clips to fasten the H15 connector to the rear plate; see fig. 24. HZZ01209-G consists of 2 clips._ **==> picture [42 x 6] intentionally omitted <==** **----- Start of picture text -----**<br> 20 to 30 Ncm<br>**----- End of picture text -----**<br> _Fig. 46_ _Connector retention brackets HZZ01216-G (CRB-HKMS)_ _Fig. 47_ _Cage clamp adapter HZZ00144-G_ tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 34 of 35 K Series 150 W DC-DC and AC-DC Converters _Fig. 48 Different cable hoods_ _Fig. 49_ _Chassis- or wall-mounting plate HZZ01213-G (Mounting plate K02)_ **==> picture [245 x 107] intentionally omitted <==** **----- Start of picture text -----**<br> European<br>Projection<br>26 (1.02")<br>09125a<br>L 56 (2.2")<br>adhesive tape<br>L = 2 m (standard length)<br> other cable lengths on request<br>9.8 (0.4")<br>**----- End of picture text -----**<br> _Fig. 50 DIN-rail mounting assembly HZZ00615-G (DMB-K/S)_ _Fig. 51 Battery temperature sensor_ _Table 27: Battery temperature sensors_ |**Battery**<br>**voltage**<br>**nom. [V]**<br>~~ee~~|**Sensor type**<br>~~ee~~|**Cell**<br>**voltage**<br>**[V]**<br>~~ee~~|**Cell temp.**<br>**coefficient**<br>**[mV/K]**<br>~~ee~~|**Cable**<br>**length**<br>**[m]**| |---|---|---|---|---| |12<br>~~ee~~<br>~~ee~~|S-KSMH12-2.27-30-2<br>~~ee~~<br>~~ee~~|2.27<br>~~ee~~<br>~~ee~~|–3.0<br>~~ee~~<br>~~ee~~|2<br>~~ee~~| |12<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH12-2.27-35-2<br>~~ee~~<br>~~ee~~<br>~~ee~~|2.27<br>~~ee ~~<br>~~ee~~<br>~~ee~~|–3.5<br> ~~ee~~<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~ee~~| |24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.27-30-2<br>~~ee ~~<br>~~ee~~<br>~~es~~|2.27<br> ~~ee~~<br>~~ee~~<br>~~ee~~|–3.0<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~| |24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.27-35-2<br>~~ee~~<br>~~es~~<br>~~ee~~|2.27<br>~~ee~~<br>~~ee~~|–3.5<br>~~ee~~<br>~~ee~~|2<br>~~ee~~| |24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.31-35-0<br>~~es~~<br>~~ee~~<br>~~ee~~|2.31<br>~~ee ~~<br>~~ee~~|–3.5<br> ~~ee~~<br>~~ee~~|4.5| |24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.31-35-2<br>~~ee~~<br>~~ee~~<br>~~ee~~|2.31<br>~~ee~~<br>~~ee~~|–3.5<br>~~ee~~<br>~~ee~~|2| |24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.35-35-2<br>~~ee~~<br>~~ee~~<br>~~ee~~|2.35<br>~~ee ~~<br>~~ee~~<br>~~ee~~|–3.5<br> ~~ee~~<br>~~ee~~<br>~~ee~~|2<br>~~ee~~| |48<br>~~ee~~<br>~~ee~~|S-KSMH48-2.27-30-2<br>~~ee ~~<br>~~ee~~|2.27<br> ~~ee ~~<br>~~ee~~|–3.0<br> ~~ee~~<br>~~ee~~|2<br>~~ee~~| |48<br>~~ee~~<br>~~a ee~~|S-KSMH48-2-27-35-2<br>~~ee~~<br>~~ee~~|2.27<br>~~ee~~<br>~~ee~~|–3.5<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~ee~~| **Note** : Other temperature coefficients and cable lengths are available on request. **NUCLEAR AND MEDICAL APPLICATIONS** - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. **TECHNICAL REVISIONS** - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. tech.support@psbel.com **belfuse.com/power-solutions** BCD20002-G Rev AG, 19-Jul-2018 © 2018 Bel Power Solutions & Protection Page 35 of 35
Updated at June 4, 2026
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