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LM1601-7R
ENCLOSED AC - DC CONVERTERS POWER
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- 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 | 1309.56 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
_**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Features** - Extremly wide operating input voltage ranges from 8 to 385 VDC and 85 to 264 VAC, 47 to 440 Hz - RoHS lead-free-solder and lead-solder-exempted products available - 5 year warranty for RoHS compliant products with an extended temperature range - Class I equipment - Input over- and undervoltage lockout - 1, 2, or 3 individually isolated outputs up to 72 V - Outputs: SELV, no load, overload, short-circuit proof, rectangular current limiting characteristic - Adjustable output voltages with remote on/off - Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6 - Emissions according to EN 55011/55022 **==> picture [63 x 44] intentionally omitted <==** **----- Start of picture text -----**<br> 111<br>4.37"<br>3U<br>391.54" 6.6"168<br>8TE<br>**----- End of picture text -----**<br> ## **Description** The M Series of DC-DC and AC-DC converters represents a broad and flexible range of power supplies for use in advanced industrial electronic systems. Features include high efficiency, reliability, low output voltage noise and excellent dynamic response to load/line changes due to individual regulation of each output. The converter inputs are protected against surges and transients occurring at the source lines. An input over- and undervoltage lockout circuit disables the outputs, if the input voltage is outside the specified range. An inrush current limitation prevents 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 outputs can be inhibited by a logic signal applied to the connector (pin 2). If the inhibit function is not used, pin 2 should be connected to pin 23 to enable the outputs. LED indicators display the status of the converter and allow visual monitoring of the system at any time. - According to EN 45545 and NF-F-16 (Version V107 or later) - All PCBs boards coated by protective lacquer - Very high reliability - Battery charger models available Safety-approved to the latest edition of IEC/EN 60950-1 and UL/CSA 60950-1 Full input to output, input to case, output to case, and output to output isolation is provided. The case design allows operation at nominal load up to 71 °C in a free-air ambient temperature. If forced cooling is provided, the ambient temperature may exceed 71 °C but the case temperature should remain below 95 °C under all conditions. A temperature sensor generates an inhibit signal, which disables the outputs, when the case temperature _T_ C exceeds the limit. The outputs automatically recover, 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" rack system according to IEC 60927-3 or be mounted onto a chassis or a plate. **Table of Contents** Page **==> picture [247 x 64] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Description ............................................................................. 1| |Model Selection|..................................................................... 2| |Functional Description ........................................................... 5| |Electrical Input Data ............................................................... 6| |Electrical Output Data ............................................................ 8| |Auxiliary Functions ............................................................... 11| **----- End of picture text -----**<br> **==> picture [247 x 78] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Page| |Electromagnetic Compatibility (EMC) .................................. 14| |Immunity to Environmental Conditions ................................ 16| |Mechanical Data|.................................................................. 17| |Safety and Installation Instructions ...................................... 18| |Description of Options|......................................................... 20| |Accessories.......................................................................... 26| **----- End of picture text -----**<br> **Copyright © 201 8 , Bel Power Solutions Inc. All rights reserved.** _**MELCHER** The Power Partners._ Page 1 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Model Selection** Non-standard input / output configurations or special custom adaptions are available on request. Table 1 provides an overview of the basic input and output configurations. More than 1000 different model types have been manufactured with different input /output configurations and customized specialties. Please consult the company for additional model types! _Table 1a: Standard models AM, BM, FM_ |**Output 1**|**Output 2**|**Output 3**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Options**| |---|---|---|---|---|---|---|---|---|---| |**_V_o nom** **_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_o nom** **_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_ nom**<br>**_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_i min – ****_V_i max**<br>**8– 35 VDC**|**ηmin1**<br>**[%]**|**_V_i min – ****_V_i max**<br>**14– 70 VDC**|**ηmin1**<br>**[%]**|**_V_i min – ****_V_i max**<br>**20– 100 VDC**|**ηmin1**<br>**[%]**|| |5.1<br>8.0<br>12<br>4.0<br>15<br>3.4<br>24<br>2.0<br>48<br>1.0|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|AM1001-9RG<br>AM1301-9RG<br>AM1501-9RG<br>AM1601-9RG<br>AM1901-9RG|72<br>79<br>79<br>81<br>81|BM1001-9RG<br>BM1301-9RG<br>BM1501-9RG<br>BM1601-9RG<br>BM1901-9RG|74<br>80<br>81<br>83<br>83|FM1001-9RG<br>FM1301-9RG<br>FM1501-9RG<br>FM1601-9RG<br>FM1901-9RG|74<br>80<br>81<br>82<br>83|-7, P<br>D0 – D9,<br>V0–V33<br>F, A, K, H<br>non-G| |5.1<br>4.0<br>5.1<br>4.0<br>12<br>2.0<br>15<br>1.7<br>24<br>1.0|5.1<br>4.0<br>24<br>1.0<br>12<br>2.0<br>15<br>1.7<br>24<br>1.0|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|AM2001-9G<br>AM2060-9G<br>AM2320-9G<br>AM2540-9G<br>AM2660-9G|-<br>-<br>77<br>78<br>-|BM2001-9G<br>BM2060-9G<br>BM2320-9G<br>BM2540-9G<br>BM2660-9G|-<br>-<br>79<br>80<br>-|-<br>-<br>FM2320-9G<br>FM2540-9G<br>--|-<br>-<br>80<br>79|-7, P<br>D0 – D9<br>A, K, H<br>non-G| |5.1<br>5.0<br>5.1<br>5.0<br>5.1<br>5.0|12<br>0.7<br>15<br>0.6<br>24<br>0.35|12<br>0.7<br>15<br>0.6<br>24<br>0.35|AM3020-9G<br>AM3040-9G<br>AM3060-9G|75<br>75<br>-|BM3020-9G<br>BM3040-9G<br>BM3060-9G|76<br>76<br>-|FM3020-9G<br>FM3040-9G<br>-|76<br>76<br>-|-7, P<br>D0 – D9, A<br>K, H, non-G| _Table 1b: Standard models CM, DM, LM_ |**Output 1**|**Output 2**<br>**Output 3**|**Output 3**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Options**| |---|---|---|---|---|---|---|---|---|---| |**_V_o nom** **_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_o nom** **_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_ nom**<br>**_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_i min – ****_V_i max**<br>**28– 140 VDC**|**ηmin1**<br>**[%]**|**_V_i min – ****_V_i max**<br>**44– 220 VDC**|**ηmin1**<br>**[%]**|**_V_i min – ****_V_i max**<br>**88– 372 VDC**<br>**85– 264 VAC 2**|**ηmin1**<br>**[%]**|| |5.1<br>8.0<br>12<br>4.0<br>15<br>3.4<br>24<br>2.0<br>48<br>1.0|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|CM1001-9RG<br>CM1301-9RG<br>CM1501-9RG<br>CM1601-9RG<br>CM1901-9RG|74<br>80<br>82<br>82<br>82|DM1001-9RG<br>DM1301-9RG<br>DM1501-9RG<br>DM1601-9RG<br>DM1901-9R|74<br>81<br>82<br>83|LM1001-9RG<br>LM1301-9RG<br>LM1501-9RG<br>LM1601-9RG<br>LM1901-9RG|74<br>80<br>79<br>82<br>82|_-7_, E4, P<br>D0–D9<br>V0–V33<br>A, K, H<br>non-G| |5.1<br>4.0<br>5.1<br>4.0<br>12<br>2.0<br>15<br>1.7<br>24<br>1.0|5.1<br>4.0<br>24<br>1.0<br>12<br>2.0<br>15<br>1.7<br>24<br>1.0|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|CM2001-9G<br>CM2060-9G<br>CM2320-9G<br>CM2540-9G<br>CM2660-9G|-<br>-<br>79<br>80<br>-|DM2001-9G<br>DM2060-9G<br>DM2320-9G<br>DM2540-9G<br>DM2660-9G|80<br>80|LM2001-9G<br>LM2060-9G<br>LM2320-9G<br>LM2540-9G<br>LM2660-9G|-<br>-<br>80<br>79|_-7,_E4, P<br>D0 – D9<br>A, K, H<br>non-G| |5.1<br>5.0<br>5.1<br>5.0<br>5.1<br>5.0|12<br>0.7<br>15<br>0.6<br>24<br>0.35|12<br>0.7<br>15<br>0.6<br>24<br>0.35|CM3020-9G<br>CM3040-9G<br>CM3060-9G|76<br>76<br>76|DM3020-9G<br>DM3040-9G<br>DM3060-9G|77<br>76<br>76|LM3020-9G<br>LM3040-9G<br>LM3060-9G|74<br>73<br>-|-7, E4, P<br>D0–D9, A<br>K, H, non-G| - 1 Min. efficiency at _V_ i nom and _I_ o nom. Typ. values are approx. 2% better. - 2 Operating frequency range: 47 – 440 Hz; see _Safety and Installation Instructions_ for >60 Hz ! - 3 Option V0, V2, V3 available only for output 1 = 5.1 V (excludes option D) - 4 Option E only available for CM and LM models (not for DM) SD NFND: Not for new designs. Oe Preferred for new designs _**MELCHER** The Power Partners._ Page 2 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ _Table 1c: EM and battery charger models_ |**Output 1**|**Output 1**|**Output 1**|**Output 2**|**Output 3**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Operating input voltage range and efficiency**|**Options**| |---|---|---|---|---|---|---|---|---|---| |_V_**o Bat**3<br>**_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_o safe**4<br>**[VDC]**|**_V_o max**<br>**[VDC]**|**_V_o nom**<br>**_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_o nom**<br>**_I_o nom**<br>**[VDC]**<br>**[A]**|**_V_i min – ****_V_i max**<br>**67– 385 VDC**|**ηmin 1**<br>**[%]**|**_V_i min – ****_V_i max**<br>**88– 372 VDC**<br>**85– 264 VAC**2|**ηmin 1**<br>**[%]**|| |Same_V_o nom<br>and_I_o nomas<br>DM models|-<br>-<br>-|-<br>- same as DM models<br>- same as DM models|-<br>-<br>- same as DM models<br>- same as DM models|-<br>-<br>-<br>-<br> same as DM models|EM1xxx-9RG<br>EM2xxx-9RG<br> EM3xxx-9RG|-<br>-<br>-|-<br>-<br>-|-<br>-<br>-|_-7,_E, D, A<br>non-G| |12<br>3.6<br>24<br>1.8<br>36<br>1.2<br>48<br>0.9<br>60<br>0.72|12.84<br>25.68<br>38.52<br>51.36<br>64.2|14.15 – 14.6<br>28.3 – 29.15<br>42.45 – 43.72<br>56.6 – 58.3<br>70.75 – 72.87|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-|-<br>-<br>-<br>-<br>-|LM1781-9RD5G<br>LM1782-9RD5G<br>LM1783-9RD5G<br>LM1784-9RD5G<br>LM1785-9RD5G|79<br>81<br>82<br>81<br>81|_-7,_E, A<br>non-G| - 1 Min. efficiency at _V_ i nom and _I_ o nom. Typ. values are approx. 2% better. - 2 Operating frequency range: 47 – 440 Hz; see _Safety and Installation Instructions_ for >60 Hz - 3 _V_ o nom for EM models > 4 Setting voltage with open R-input (battery chargers) SD NFND: Not for new designs. Oe Preferred for new designs _**MELCHER** The Power Partners._ Page 3 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Part Number Description** C M 2 5 40 -9 E P D3 A H G Operating input range _V_ i: 8 – 35 VDC ................... A 14 – 70 VDC ................... B 20 – 100 VDC ................... F 28 – 140 VDC ................... C 44 – 220 VDC ................... D 67 – 385 VDC ................... E 85 – 264 VAC, 88 – 372 VDC ................... L Series ................................................................................... M Number of outputs[4] ......................................................................... 1, 2, 3[4] Output 1, _V_ o1 nom: 5.1 V ............0, 1, 2 12 V ....................3 15 V ................4, 5 24 V ....................6 other voltages ................7, 8 48 V ....................9 Single-output models (different specs.) ......................01 – 99 Outputs 2, 3: _V_ o2 nom, _V_ o3 nom: 5.1 V .......................01 – 19 12 V ........................20 – 39 15 V ........................40 – 59 24 V ........................60 – 69 other voltages and specs. ............21 – 99 Ambient temperature range _T_ A: –25 to 71 °C .................. -7 – 40 to 71 °C .................. -9 customer-specific ... -0, -5, -6, -8 Auxiliary functions and options: Inrush current limitation (CM, EM, LM) ........................ E Output voltage control input (single-output models) .... R[2] Potentiometers for adjustment of output voltages ....... P[2] Save data signal (D0 – D9, to be specified) ................ D[1] ACFAIL signal (V0, V2, V3, to be specified) ................ V[1] Output voltage test sockets.......................................... A Increased electric strength test voltage ....................... H Input fuse built-in (not accessible) ............................... F[3] Coding strip at the connector ....................................... K RoHS-compliant for all 6 substances........................... G = - 1 Option D excludes option V and vice versa - 2 Feature R is fitted to single-output models only. Option P excludes option R (and vice versa). - 3 Only for FM1000 - 4 Models with 220 mm case length. Just add 6000 to the standard model number, e.g., DM3020-9AG → DM9020-9AG. **Note:** The sequence of options must follow the order above. This part number description is descriptive only; it is not inteded for creating part numbers. NFND: Not for new designs Preferred for new designs. Example: CM2540-9EPD3AHG: DC-DC converter, operating input voltage range 28 – 140 VDC, providing output 1 with 15 V/1.7 A and output 2 with 15 V /1.7 A; temperature range –40 to +71 °C, inrush current limitation, equipped with potentiometers, undervoltage monitor D3, test sockets, tested with higher voltage output to case, RoHS-compliant for all 6 substances. _**MELCHER** The Power Partners._ Page 4 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Functional Description** The input voltage is fed via an input fuse, an input filter, a bridge rectifier, and an inrush current limiter to the input capacitor. This capacitor sources a single-transistor forward converter. 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 main control circuit senses the main output voltage _V_ o1 and generates, with respect to the maximum admissible output currents, the control signal for the primary switching transistor. This signal is transferred to the primary side by a coupling transformer. The auxiliary output voltages _V_ o2 and _V_ o3 are individually regulated by means of secondary switching transistors. Each auxiliary output's current is sensed using a current transformer. If one of the outputs is driven into current limit, the other outputs will reduce their output voltages as well, because all output currents are controlled by the same main control circuit. **==> picture [501 x 219] intentionally omitted <==** **----- Start of picture text -----**<br> 03009a<br>Option P<br>2 i<br>5 D, V<br>Main control circuit 14 R 4<br>17 G 4<br>| C Y yfCJ eeCF Output 1 |) 20<br>N 5 Vi+ filter<br>2 9 23<br>1 2 C Z<br>'Y pe Control ee 14<br>circuit Output 2<br>: m . i e S S<br>filter<br>3 i ee output 2 ec ee 17<br>5 C Z<br>L < 5 Vi– 32 x Control pg s P N 8<br>circuit Output 3<br>filter<br>3 el output 3 ee ee See ee 11<br>26<br>C Y<br>eo e e<br>Input filter<br>Fuse approx. 70 kHz<br>Forward converter<br>**----- End of picture text -----**<br> - 1 Transient suppressor diode in AM, BM, CM, FM models. - 2 Bridge rectifier in LM, series diode in EM models. - 3 Inrush current limiter (NTC) in CM, DM, EM, LM models (option E: refer to the description of option E). 4 Single-output models with feature R. - 5 LM-models _Fig. 1_ _Block diagram, triple-output models_ _**MELCHER** The Power Partners._ Page 5 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Electrical Input Data** ## General conditions: – _T_ A = 25 °C, unless _T_ C is specified. – Connector pins 2 and 23 interconnected, R input not connected; with option P: _V_ o = _V_ o nom ## _Table 2a: Input data_ |**Input**<br>**AM**<br>**BM**<br>**FM**<br>**CM**<br>**Unit**<br>**Characteristics**<br>**Conditions**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>_V_i<br>Operating input voltage<br>_I_o= 0 –_I_o nom<br>8<br>35<br>14<br>70<br>20<br>100<br>28<br>1547<br>VDC<br>_V_i nom<br>Nominal input voltage<br>_T_C min–_T_C max<br>15<br>30<br>50<br>60<br>_I_i<br>Input current<br>_V_i nom,_I_o nom2<br>4.0<br>2.0<br>1.2<br>1.0<br>A<br>_P_i 0<br>No-load input power:<br>_V_i nom<br>– single-output models _I_o1,2,3= 0<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>W<br>– double-output models<br>7<br>9<br>7<br>9<br>7<br>9<br>7<br>9<br>– triple-output models<br>6<br>9<br>6<br>9<br>6<br>9<br>6<br>9<br>_P_i inh<br>Idle input power<br>inhibited,_V_i nom<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>_I_inr p6<br>Peak inrush current<br>_V_i =_V_i max<br>400<br>500<br>400<br>1704<br>A<br>_t_inr r<br>Rise time<br>_R_S= 0Ω3<br>60<br>50<br>40<br>60<br>µs<br>_t_inr h<br>Time to half-value<br>_T_C= 25 °C<br>170<br>100<br>60<br>280<br>_R_i<br>Input resistance<br>_T_C= 25 °C<br>87.5<br>140<br>250<br>8244<br>mΩ<br>_C_i<br>Input capacitance<br>2600<br>4000<br>670<br>1100<br>370<br>600<br>370<br>600<br>µF<br>_V_i abs<br>Input voltage limits<br>0<br>40<br>0<br>80<br>0<br>120<br>0<br>160<br>VDC<br>without any damage<br>aSY<br>-—<br>es<br>ee<br>a<br>ee<br>es<br>ee<br>es<br>_<br>—<br>| |<br>S—————<br>| |<br>ee eee<br>a<br>ee<br>a| |---| |_Table 2b: Input data_| |**Input**<br>**DM**<br>**EM**<br>**LM**<br>**Unit**<br>**Characteristics**<br>**Conditions**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**a**| |_V_i<br>Operating input voltage<br>_I_o= 0 –_I_o nom<br>-<br>-<br>85<br>264<br>VAC1<br>_T_C min–_T_C max<br>44<br>220<br>67<br>385<br>88<br>372<br>VDC<br>_V_i nom<br>Nominal input voltage<br>110<br>220<br>310<br>_I_i<br>Input current<br>_V_i nom,_I_o nom2<br>0.55<br>0.275<br>0.20<br>A<br>_P_i 0<br>No-load input power:<br>_V_i nom<br>– single-output models<br>_I_o1,2,3= 0<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>W<br>– double-output models<br>7<br>9<br>7<br>9<br>7<br>9<br>– triple-output models<br>6<br>9<br>6<br>9<br>6<br>9<br>_P_i inh<br>Idle input power<br>inhibited,_V_i nom<br>1<br>1.5<br>1<br>1.5<br>1<br>1.5<br>_I_inr p6<br>Peak inrush current<br>_V_i =_V_i max<br>1104<br>1604<br>604<br>A<br>_t_inr r<br>Rise time<br>_R_S= 0Ω3<br>40<br>40<br>300<br>µs<br>_t_inr h<br>Time to half-value<br>_T_C= 25 °C<br>250<br>240<br>900<br>_R_i<br>Input resistance<br>_T_C= 25 °C<br>20004<br>24004<br>62004<br>mΩ<br>_C_i<br>Input capacitance<br>140<br>270<br>140<br>270<br>140<br>270<br>µF<br>_V_i abs<br>Input voltage limits<br>0<br>4005<br>– 400<br>400<br>–400<br>400<br>VDC<br>without any damage<br>–<br>–<br>–<br>–<br>0<br>284<br>VAC<br>fo<br>;<br>oo<br>ee<br>EE<br>ee<br>a<br>Pofo<br>a<br>ee ee<br>| |<br>Fo<br>tst~<—~—sOY<br>a<br>ee<br>ee<br>nn<br>a ee<br>tis<br>ep<br>ee| |1<br>In AC powered mode (LM models): Nominal input voltage range: 100 – 240 VAC, operating input frequency range: 47 – 440 Hz| |2<br>With multiple-output models, the same condition for each output applies.| - 3 _R_ S = source resistance. - 4 Value for initial switch-on cycle. - 5 1 s max., duty cycle 1% max. - 6 _I_ inr p = _V_ i /( _R_ s + _R_ i); see _Inrush Current_ . - 7 - 140 V continuously. CM models with version V106 or greater (or with suffix /131) withstand 154 V for 2 s. _**MELCHER** The Power Partners._ Page 6 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ~~Se~~ ## **Input Fuse** A fuse holder containing a slow-blow type fuse (size: 5 × 20 mm) is mounted in the back plate of the converter. The fuse protects the converter against severe defects. It may not fully protect it at input voltages exceeding 200 VDC. In applications, where the converters operate at DC source voltages above 200 VDC, an external fuse or a circuit breaker at system level should be installed. The fuse and a VDR form together with the input filter an effective protection against high input transients. **Note:** For applications, where the fuse should not be accessible; see _Option F_ . _Table 3: Fuse types (slow-blow)_ |**Series**|**Schurter type**|**Part number**| |---|---|---| |AM1000 – 3000|SPT 10 A /250 V|0001.2514| |BM1000 – 3000|SPT 8 A /250 V|0001.2513| |FM1000 – 3000|SPT 5 A /250 V|0001.2511| |CM1000 – 3000|SPT 3.15 A /250 V|0001.2509| |DM1000 – 3000<br>EM1000 – 3000<br>LM1000 – 3000|SPT 2.5 A /250 V|0001.2508| **==> picture [234 x 295] intentionally omitted <==** **----- Start of picture text -----**<br> I i [A]<br>10 04014a<br>|<br>IX<br>Ne ee ee<br>YN | ft<br>A Ne ee ee<br>AM<br>BM<br>1.0 OK<br>NNN FM<br>NE CM<br>PNA NS DM<br>EM<br>LM<br>SSE<br>V i DC<br>0.1 LE rr ________<br>1 2 3 4 5 6 V i min DC<br>— —<br>Fig. 2<br>**----- End of picture text -----**<br> _Typical input current versus relative input voltage at nominal output load_ ## **Input Under-/Overvoltage Lockout** If the input voltage remains below 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 rating _V_ i abs must be carefully considered (see table _Input data_ ). **Note:** When _V_ i is between _V_ i min and the undervoltage lockout level, the output voltage may be below the value defined in table _Output data_ . ## **Reverse Polarity** Reverse polarity at the input of AM, BM, CM, DM, and FM models will cause the fuse to blow. In EM and LM models a series diode will protect the converter. A series diode is not incorporated in AM, BM, CM, DM and FM types to avoid unwanted power losses. ## **Inrush Current** The CM, DM, EM, and LM (excluding FM) models incorporate an NTC resistor in the input line, which (during the initial switchon cycle) limits the peak inrush current in order to prevent the connectors and external switching devices from damage. Subsequent switch-on cycles within a short interval will cause an increase of the peak inrush current due to the warming-up of the NTC resistor. Refer to _Option E_ (only available for CM, EM, and LM. **==> picture [241 x 276] intentionally omitted <==** **----- Start of picture text -----**<br> I i [A]<br>04015a<br> LM A-EM<br>80 400 BM<br>-<br>70 350<br>AM<br>60 300<br>50 250<br>FM<br>40 200<br>LM<br>30 150 EM<br>DM<br>20 100 CM<br>10 50<br>PASS<br>Ss >=<br>0 t [ms]<br>0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 A-EM<br>0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 LM<br>**----- End of picture text -----**<br> _Fig. 3_ _Typical inrush current at initial switch-on. V_ i max _(DC) and nominal output load_ _**MELCHER** The Power Partners._ Page 7 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Electrical Output Data** ## General conditions – _T_ A = 25°C, unless _T_ C is specified. – Connector pins 2 and 23 interconnected, R input not connected; with option P: _V_ o = _V_ o nom ## _Table 4: Output data_ |_Table 4: Output data_|_Table 4: Output data_|_Table 4: Output data_|_Table 4: Output data_|||||||| |---|---|---|---|---|---|---|---|---|---|---| |**Output**||||**_V_o nom**|**5.1 V**|**12 V**|**15 V**|**24 V**|**48 V**|**Unit**| |**Characteristics**||||**Conditions**|**min typ max **|**min**<br>**typ max**|**min typ max**|**min typ max**|**min typ max**|| |_V_o|Output voltage|||_V_i nom,_I_o nom1|5.07<br>5.13 11.93|5.13 11.93<br>12.07|14.91<br>15.09|23.86<br>24.14|47.72<br>48.28|V| |_V_o p|Output overvoltage<br>protection5||||7.5|21|25|41|85|| |_I_o nom|Output current|||_V_i min–_V_i max<br>_T_C min–_T_C max|see table 1_Model Selection_|||||| |_I_o L|Output current<br>limitation||||see fig. 4_Typical voltage V_o1_versus output currents I_o|||||| |_v_o|Output<br>voltage<br>noise|Switch. freq.||_V_i nom,_I_o nom1<br>IEC/EN 61204<br>BW = 20 MHz|15<br>30|25<br>50|35<br>70|40<br>80|50 100|mVpp| |||Total|||60<br>120|40<br>80|40<br>80|40<br>80|-|| |∆_V_o V|Static line regulation|||_V_i min–_V_i nom<br>_V_i nom–_V_i max<br>_I_o nom1|±10<br>±30|±12<br>±50|±15<br>±60|±15 ±60|±15 ±60|mV| |∆_V_o I|Static load regulation|||_V_i nom<br>_I_o nom– 02|6<br>25|13<br>50|17<br>60|30<br>80|60 150|| |∆_V_o Ic|Static cross load<br>regulation4|||_V_i nom<br>_I_o nom– 03|0<br>±15|0<br>±20|0<br>±30|0<br>±40|-|| |_v_o d|Dynamic<br>load<br>regulation||Voltage<br>deviation|_V_i nom<br>_I_o nom ↔1/3 _I_o nom2<br>IEC/EN 61204|±220|±110|±150|±130|±150|| |_t_d|||Recovery<br>time||0.6|0.6|0.5|1|2|ms| |_v_o d c|Dynamic<br>cross load <br>regulation 4||Voltage<br> deviation|_V_i nom<br>_I_o nom↔1/3 _I_o nom3<br>IEC/EN 61204|+10<br>–100|+10<br>–75|+10<br>–140|+20<br>–200|-<br>-|mV| |_t_d c|||Recovery<br>time||0.05<br>0.5|0.2<br>0.3|0.5<br>0.7|1<br>2|-<br>-|ms| |αVo|Temperature<br>coefficient<br>∆_V_o/∆_T_C|||_V_i min–_V_i max<br>0 –_I_o nom|±0.02|±0.02|±0.02|±0.02|±0.02|%/K| ||||||±1.0|±2.4|±3.0|±4.8|±9.6|mV/K| > 1 With multiple-output models, all outputs are loaded with the nominal current. > 2 Condition for specified output. With multiple-output models, other output(s) loaded with constant current _I_ o nom. See fig. 5 _Dynamic load regulation._ > 3 Condition for non-specified output, individually tested, other output(s) loaded with constant current _I_ o nom. See fig. 5 _Dynamic load regulation._ > 4 Multiple-output models. > 5 By suppressor diode. _**MELCHER** The Power Partners._ Page 8 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Output Characteristic and Protection** temperature of surrounding components and surfaces. _T_ A max is therefore, contrary to _T_ C max, an indicative value only. Each output is protected by a suppressor diode, which under worst case conditions may become a short circuit. The suppressor diodes are not designed to withstand externally applied overvoltages. Overload at any of the outputs will cause a shutdown of all outputs. A red LED indicates an overload condition at the respective output. **Caution:** The installer must ensure that under all operating conditions _T_ C remains within the limits stated in the table _Temperature specifications._ **Notes:** Sufficient forced cooling or an additional heat sink allow _T_ A to pass over 71 °C, if _T_ C max is not exceeded. For -7 or -9 models at an ambient temperature _T_ A of 85 °C with only convection cooling, the maximum permissible current foreach output is approx. 50% of its nominal value; see figure 6. each output is approx. 50% of its nominal value; see figure 6. **==> picture [498 x 247] intentionally omitted <==** **----- Start of picture text -----**<br> V o nom V o I o nom I oL1 only convection cooling, the maximum permissible current foreach output is approx. 50% of its nominal value; see figure 6.<br>1.0 I oL2, I oL3<br>0.95 aS ae ZN S A temperature sensor generates an internal inhibit signal<br>| disabling the outputs, when the case temperature exceeds<br>| T C max. . The outputs automatically recover, when<br>I o1 temperature drops below this limit.<br>1| yd I o2, I o3<br>0.5 | i}I I ||— I o/ I o nom<br>ee<br>|ele| il 1.0 Forced cooling TTT\<br>ot || H | '<br>0 0.5 05022a 1.0 / if 1.2 il II o nomo 0.8 Convection cooling !<br>0.6 aeteteteieieieteteieietenel ||ieteieieiee [1] a T C max<br>Fig. 4 0.4 I\1| 1<br>Typical voltage V o versus output currents I o.. \Ilf1 1<br>0.2 I1<br>I1 1<br>| 1 :<br>V o |||||| 0 50 60 70 | 80 I 90 1 100 T A [°C]<br>05031a<br>**----- End of picture text -----**<br> A temperature sensor generates an internal inhibit signal disabling the outputs, when the case temperature exceeds _T_ C max. . The outputs automatically recover, when the temperature drops below this limit. _Fig. 4 Typical voltage V_ o _versus output currents I_ o.. **==> picture [256 x 130] intentionally omitted <==** **----- Start of picture text -----**<br> V o ||||||<br>V od | ∆ V o I | ∆ V o I<br>|<br>|I<br>||<br>| V od |<br>| t d t d<br>H N at t<br>||<br>I o/ I o nom ||<br>||<br>1 |<br>0.3<br>0 | | ≥ 10 µs | ≥ 10 µs 05010a t<br>**----- End of picture text -----**<br> **==> picture [175 x 23] intentionally omitted <==** **----- Start of picture text -----**<br> Fig. 6<br>Output current derating versus temperature<br>**----- End of picture text -----**<br> ## **Parallel and Series Connection** Main outputs of equal nominal voltage can be connected in parallel. It is important to assure that the main output of a multiple-output converter is forced to supply a minimum current of 0.1 A to enable correct operation of its own auxiliary outputs. In parallel operation, one or more of the main outputs may operate continuously in current limitation, causing an increase of the case temperature _T_ C. Consequently, a reduction of the max. ambient temperature by 10 K is recommended. _Fig. 5_ _Dynamic load regulation V_ o d _versus load change._ Main or auxiliary outputs can be connected in series with any other output of the same or another converter. In series connection, the maximum output current is limited by the lowest current limit. Output ripple and regulation values are added. Connection wiring should be kept as short as possible. ## **Thermal Considerations and Protection** If a converter is located in free, quasi-stationary air (convection cooling) at the indicated maximum ambient temperature _T_ A max (see table _Temperature specifications)_ 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 _T_ A and _T_ C depends heavily on the conditions of operation and integration into a system. The thermal conditions are influenced by input voltage, output current, airflow, and If output terminals are connected together in order to establish multi-voltage configurations, e.g., +5.1 V, ±12 V etc., the common-ground connecting point should be as close as possible to the connectors of the converter in order to avoid excessive output ripple voltages. **Note:** Auxiliary outputs should never be connected in parallel! _**MELCHER** The Power Partners._ Page 9 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Output Current Allocation for Special Models** Output currents differing from those given for standard models (see _Model Selection_ ) can be provided on request. A maximum output power of 50 W should be considered, if an ambient temperature range of – 40 to 71 °C is required. The maximum permissible output currents are indicated in the table below. If the output voltages are different from standard values, the relevant output currents have to be adapted accordingly. With reduced maximum ambient temperature or with forced cooling, the total output power may exceed 50 W. Customized configurations always need to be checked by a feasibility study first. Please ask the Company for more information. _Table 5: Current allocation with special models_ |**Output voltage**<br>**all types**<br>**_V_o1/2/3 nom [V]**|**Output voltage**<br>**all types**<br>**_V_o1/2/3 nom [V]**|**Output 1**<br>**all types**<br>**_I_o1 max [A]**|**Output 2**<br>**AM – LM2000**<br>**_I_o2 max [A]**|**Output 2**<br>**AM – LM3000**<br>**_I_o2 max [A]**|**Output 3**<br>**AM – LM3000**<br>**_I_o3 max [A]**|**Temperature**<br>**_T_A [°C]**<br>**_T_C [°C]**|**Temperature**<br>**_T_A [°C]**<br>**_T_C [°C]**| |---|---|---|---|---|---|---|---| |5.1<br>12<br>15<br>24||8.0<br>4.0<br>3.4<br>2.0|4.0<br>2.0<br>1.7<br>1.0|1.8 (2.51)<br>1.5<br>1.2<br>0.7|1.5<br>1.2<br>1.0<br>0.5|–40 to 71|–25 to 95| |2|5.1<br>12<br>15<br>24|10.0<br>5.0<br>4.0<br>2.5|4.5<br>2.5<br>2.0<br>1.3|2.1 (2.81)<br>1.7<br>1.5<br>0.9|1.8<br>1.5<br>1.3<br>0.7|–25 to 60|–25 to 90| ||5.1<br>12<br>15<br>24|11.0<br>6.0<br>4.6<br>3.0|5.0<br>3.0<br>2.3<br>1.5|2.4 (3.01)<br>2.0<br>1.7<br>1.0|2.0<br>1.7<br>1.5<br>0.8|–25 to 50|–25 to 85| > 1 Special high-current components required.[ 2] _V_ i min has to be increased. ## **Hold-up Time and Output Response** When the input voltage is switched off, the output voltage will remain high for a certain hold-up time _t_ h (see fig. _7_ ) before the output voltage falls below 0.95 _V_ o nom. To achieve the hold-up times indicated in fig. 8, AM, BM, CM, DM, and FM models require an external series diode in the input line. This is necessary to prevent the discharge of the input capacitor through the source impedance or other circuits connected to the same source. EM and LM models have a built-in series diode. In AM, BM, CM, DM, and FM models, no series diode is built-in, since it would generate additional power losses inside the converter. **Note:** For hold-up time with option V, refer to _Option V._ **==> picture [224 x 157] intentionally omitted <==** **----- Start of picture text -----**<br> V o/ V o nom<br>05025a<br>0.95<br>0.1<br>0 t r t f t<br>V i t h<br>1<br>0 t<br>Inhibit<br>1<br>0 t<br>**----- End of picture text -----**<br> _Fig. 7 Output response times versus V_ i _or inhibit control_ The behavior of the outputs is similar with either the input voltage applied or the inhibit switched low. No output voltage overshoot occurs, when the converter is turned on or off. **==> picture [238 x 292] intentionally omitted <==** **----- Start of picture text -----**<br> t h [ms]<br>1000 05024a<br>_——————<br>a<br>ee ee ee ee LM<br>100 | CM/DMEM<br>AM/BM/FM<br>a<br>10 ee<br>LA<br>—————————<br>EF AA oo<br>[i/ ff |<br>1 2<br>re<br>eyes|<br>ae ______ V i DC<br>0.1<br>1 2 3 4 5 6 V i min DC<br>Fig. 8<br>Typical hold-up time t h versus input voltage at I o nom<br>**----- End of picture text -----**<br> _**MELCHER** The Power Partners._ Page 10 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ _Table 6: Output response time t_ r _and t_ f _(see fig. 7). Values not applicable for models equipped with option E._ |**Type of converter**|**_t_r at****_P_o = 0 and****_t_f at****_P_o =** **_P_o nom**<br>**typ**<br>**max**|**_t_r and****_t_f at****_P_o = 3/4 ****_P_o nom**<br>**typ**<br>**max**|**_t_r at****_P_o = ****_P_o nom**<br>**typ**<br>**max**|**Unit**| |---|---|---|---|---| |AM – LM1001-9R<br>AM – LM1301-9R<br>AM – LM1501-9R<br>AM – LM1601-9R<br>AM – LM1901-9R|5<br>10<br>10<br>20<br>5<br>10<br>15<br>30<br>65<br>130|5<br>10<br>15<br>30<br>10<br>20<br>25<br>50<br>100<br>200|10<br>20<br>20<br>40<br>30<br>60<br>40<br>80<br>165<br>330|ms| |AM – LM2320-9<br>AM – LM2540-9|20<br>40<br>15<br>30|30<br>60<br>20<br>40|50<br>100<br>35<br>70|| |AM – LM3020-9<br>AM – LM3040-9|55<br>110<br>40<br>80|85<br>170<br>60<br>120|145<br>290<br>100<br>200|| ## Conditions: R input not connected. For multiple-output models the figures indicated in the table relate to the output, which reacts slowest. All outputs are resistively loaded. Variation of the input voltage within _V_ i min – _V_ i max does not influence the values considerably. ## **Auxiliary Functions** ## **Inhibit** The outputs of the converters may be enabled or disabled by means of a logic signal (TTL, CMOS, etc.) applied between the inhibit input i and the negative pin of output 1 (Vo1–). In systems with several converters, this feature can be used, for example, to control the activation sequence of the converters. If the inhibit function is not required, connect the inhibit pin 2 to pin 23 to enable the outputs (active low logic, fail safe). The response times are specified in table 6. **==> picture [206 x 95] intentionally omitted <==** **----- Start of picture text -----**<br> 06031a<br>Vi+ Vo+<br>—9I ee eee ee e i oA I inh<br>V inh<br>I<br>~o. Vi– SS Vo– a<br>**----- End of picture text -----**<br> **==> picture [236 x 204] 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>1.6 PTTeT<br>1.2<br>PTT Z|<br>0.8 PTT TT ey<br>0.4 + V o = on TT eT ee V o = off<br>+14an a<br>CI 4<br>0 oe A<br>–0.4 PTPeery<br>–0.8 eT LT TETTT T V inh [V]<br>–50 –30 –10 0 10 30 50<br>|<br>Fig. 10<br>Typical inhibit current I inh versus inhibit voltage V inh<br>06032a<br>**----- End of picture text -----**<br> _Fig. 9 Definition of V_ inh _and I_ inh _._ _Table 7: Inhibit data_ |_Table 7: Inhibit data_|_Table 7: Inhibit data_|_Table 7: Inhibit data_|||| |---|---|---|---|---|---| |**Characteristics**|||**Conditions**|**min**<br>**typ**<br>**max**|**Unit**| |_V_inh|Inhibit input voltage to keep<br>output voltage|_V_o= on|_V_i min–_V_i max<br>_T_C min –_T_C max|–50<br>0.8|V| |||_V_o= off||2.4<br>50|| |_I_inh|Inhibit current||_V_inh= 0|–60<br>–100<br>–220|µA| _**MELCHER** The Power Partners._ Page 11 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **R-Control for Output Voltage Adjustment** As a standard feature, single-output models without option P offer an adjustable output voltage identified by letter R in the type designation. **Note:** With open R input, _V_ o = _V_ o nom. The output voltage _V_ o can either be adjusted by an external voltage ( _V_ ext) or by an external resistor ( _R_ ext1 or _R_ ext2). The adjustment range is approximative 0 – 110% of _V_ o nom. For output voltages _V_ o > _V_ o nom, the minimum input voltage _V_ i min specified in _Electrical Input Data_ increases proportionally to _V_ o/ _V_ o nom. **==> picture [241 x 139] intentionally omitted <==** **----- Start of picture text -----**<br> JM075<br>L Vo+<br>rT 3 R ext2<br>=—@) V ref = 2.5 V 4 k Ω f—_<br>— -<br>1 R<br>+ +<br>1 Control | Y |<br>:|© logic R ext1 V ext<br>G –<br>| y t 9<br>N _41 C) Vo– ee!<br>y<br>Fig. 11<br>**----- End of picture text -----**<br> - a) Adjustment by means of an external resistor Rext. Depending upon the value of the required output voltage, the resistor shall be connected: **either:** Between the R and G pin to achieve an output voltage adjustment range of _V_ o ≈ 0 to 100 % of _V_ o nom. **==> picture [103 x 19] intentionally omitted <==** **or:** Between the R pin and Vo+ to achieve an output voltage range of _V_ o ≈ 100 to 110% of _V_ o nom. **==> picture [148 x 21] intentionally omitted <==** **Caution:** To prevent damage, _R_ ext2 should never be less than 47 kΩ. **Note:** R inputs of n converters with paralleled outputs may be paralleled too, but if only one external resistor is used, its value should be _R_ ext1/n or _R_ ext2/ n respectively. - b) Adjustment by means of an external control voltage _V_ ext between G and R pin. - The control voltage range is 0 to 2.75 V and allows for adjustment in the range of _V_ o ≈ 0 to 110% of _V_ o nom. **==> picture [99 x 20] intentionally omitted <==** **Caution:** The external control voltage should be in the range 0 to +3 V to prevent the converter from damage. _Output voltage adjustment_ _Table 8a: R_ ext1 _for V_ o _< V_ o nom _(conditions: V_ i nom _, I_ o nom _, rounded up to resistor values E 96, R_ ext2 _is not fitted.)_ |_Table 8a: R_ext1_for V_o _< V_|_< V_o nom_(conditions: V_i nom_, I_|_, I_o nom_, rounded up to resistor values E 96, R_|_, rounded up to resistor values E 96, R_ext2_is not fitted.)_|_is not fitted.)_| |---|---|---|---|---| |**_V_o nom = 5.1 V**<br>**_V_o [V]**<br>**_R_ext1 [k**Ω**]**|**_V_o nom = 12 V**<br>**_V_o [V]**<br>**_R_ext1 [k**Ω**]**|**_V_o nom = 15 V**<br>**_V_o [V]**<br>**_R_ext1 [k**Ω**]**|**_V_o nom = 24 V**<br>**_V_o [V]**<br>**_R_ext1 [k**Ω**]**|**_V_o nom = 48 V**<br>**_V_o [V]**<br>**_R_ext1 [k**Ω**]**| |0.5<br>0.432<br>1.0<br>0.976<br>1.5<br>1.65<br>2.0<br>2.61<br>2.5<br>3.83<br>3.0<br>5.76<br>3.5<br>8.66<br>4.0<br>14.7<br>4.5<br>30.1<br>5.0<br>200.0|2.0<br>0.806<br>3.0<br>1.33<br>4.0<br>2.0<br>5.0<br>2.87<br>6.0<br>4.02<br>7.0<br>5.62<br>8.0<br>8.06<br>9.0<br>12.1<br>10.0<br>20.0<br>11.0<br>44.2|2.0<br>0.619<br>4.0<br>1.47<br>6.0<br>2.67<br>8.0<br>4.53<br>9.0<br>6.04<br>10.0<br>8.06<br>11.0<br>11.0<br>12.0<br>16.2<br>13.0<br>26.1<br>14.0<br>56.2|4.0<br>0.806<br>6.0<br>1.33<br>8.0<br>2.0<br>10.0<br>2.87<br>12.0<br>4.02<br>14.0<br>5.62<br>16.0<br>8.06<br>18.0<br>12.1<br>20.0<br>20.0<br>22.0<br>44.2|8.0<br>0.806<br>12.0<br>1.33<br>16.0<br>2.0<br>20.0<br>2.87<br>24.0<br>4.02<br>28.0<br>5.62<br>32.0<br>8.06<br>36.0<br>12.1<br>40.0<br>20.0<br>44.0<br>44.2| _Table 8b: R_ 2 _for V_ o _> V_ o nom _(conditions: V_ i nom _, I_ o nom _, rounded up to resistor values E 96, R_ ext1 _is not fitted.)_ |_Table 8b: R_2_for V_o _> V_o nom|o nom_(conditions: V_i nom_, I_o nom|o nom_, rounded up to resistor values E 96, R_|_, rounded up to resistor values E 96, R_ext1_is not fitted.)_|_is not fitted.)_| |---|---|---|---|---| |**_V_o nom = 5.1 V**<br>**_V_o [V]**<br>**_R_ext2 [k**Ω**]**|**_V_o nom = 12 V**<br>**_V_o [V]**<br>**_R_ext2[k**Ω**]**|**_V_o nom = 15 V**<br>**_V_o [V]**<br>**_R_ext2[k**Ω**]**|**_V_o nom = 24 V**<br>**_V_o [V]**<br>**_R_ext2[k**Ω**]**|**_V_o nom = 48 V**<br>**_V_o [V]**<br>**_R_ext2[k**Ω**]**| |5.15<br>464<br>5.20<br>215<br>5.25<br>147<br>5.30<br>110<br>5.35<br>90.9<br>5.40<br>78.7<br>5.45<br>68.1<br>5.50<br>61.9|12.1<br>1780<br>12.2<br>909<br>12.3<br>619<br>12.4<br>464<br>12.5<br>383<br>12.6<br>316<br>12.7<br>274<br>12.8<br>249<br>13.0<br>200<br>13.2<br>169|15.2<br>1470<br>15.4<br>750<br>15.6<br>511<br>15.8<br>383<br>16.0<br>332<br>16.2<br>274<br>16.4<br>237<br>16.5<br>226|24.25<br>3160<br>24.50<br>1620<br>24.75<br>1100<br>25.00<br>825<br>25.25<br>715<br>25.50<br>590<br>25.75<br>511<br>26.00<br>453<br>26.25<br>402<br>26.40<br>383|48.5<br>6810<br>49.0<br>3480<br>49.5<br>2370<br>50.0<br>1780<br>50.5<br>1470<br>51.0<br>1270<br>51.5<br>1100<br>52.0<br>953<br>52.5<br>845<br>52.8<br>806| _**MELCHER** The Power Partners._ Page 12 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Display Status of LEDs** **==> picture [358 x 230] 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 a Conditions: I o ≤≤ I o nom , T C ≤≤ T<br>I1 I | I | | | V i V i uv = undervoltage lockout, V<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 V o1 adj<br>OK | LEDs "OK" and "Io Lo L" status versus output current I<br>I o L SS | i] I o Conditions: V i min – V i max , T<br>I o nom I oL<br>i<br>T LED "i" versus case temperature<br>T C max i]1 || T PTC threshold T C Conditions: V i min – V i max , I o ≤<br>V inh threshold<br>i TI LED "i" versus V inh<br>-50 V +0.8 V || +2.4 V \| +50 V |1 V inh Conditions: V i min – V i max , I o ≤<br>LED off LED status undefined LED on<br>**----- End of picture text -----**<br> _LEDs "OK" and "i" status versus input voltage V_ i _Conditions: I_ o ≤≤ _I_ o nom _, T_ C ≤≤ _T_ C max _, V_ inh ≤ _0.8 V V_ i uv _= undervoltage lockout, V_ i ov _= overvoltage lockout_ _LEDs "OK" and "Io Lo L" status versus output current I_ o _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_ _Conditions: V_ i min _– V_ i max _, I_ o ≤ _I_ o nom _, T_ C ≤ _T_ C max _Fig. 12 Status of LEDs._ _**MELCHER** The Power Partners._ Page 13 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ~~OO~~ ## **Electromagnetic Compatibility (EMC)** A suppressor diode or a metal oxide VDR (depending upon converter model) together with an input fuse and an input filter form an effective protection against high input transient voltages, which typically occur in most installations, but especially in battery-driven mobile applications. The M Series has been successfully tested to the following specifications: ## **Electromagnetic Immunity** _Table 9: Immunity type tests_ |**Phenomenon**|**Standard**|**Level**|**Coupling**<br>**mode**1|**Value**<br>**applied**|**Waveform**|**Source**<br>**imped.**|**Test**<br>**procedure**|**In**<br>**oper.**|**Perf.**<br>**crit.**2| |---|---|---|---|---|---|---|---|---|---| |Supply related<br>surges|RIA 123<br>Pf|A4<br>Se|+i/–i<br>Se<br>a|3.5 •_V_batt<br>Se|2/20/2 ms<br>Se|0.2Ω<br>Se|1 positive<br>surge<br>Se|yes<br>Se|A| |||B<br>Se||1.5 •_V_batt<br>Se<br>a|0.1/1/0.1 s<br>Se<br>a||||| |Direct transients||C|–i/c, +i/–i<br>a<br>a<br>a|960 Vp<br>a|10/100 µs<br>a|5Ω<br>||5 pos. and 5 neg.<br>impulses<br>|<br>|<br>|<br>|yes<br>|A| |||D3||1800 Vp<br>a<br>||5/50 µs<br>a<br>|||||| |||E||3600 Vp<br>|<br>||0.5/5 µs<br>|<br>||100Ω<br>|<br>|<br>|<br>|||| |||F||4800 Vp<br>|<br>a|0.1/1 µs<br>|<br>a||||| |||G||8400 Vp<br>a|0.05/0.1 µs<br>a||||| |Indirect coupled<br>transients<br>—<br>Pf||H<br>-<br>|–o/c, +o/–o, –o/–i<br>a<br>a<br>|1800 Vp<br>a<br>|<br>|<br>|5/50 µs<br>a<br>|<br>|<br>||||| |||J<br>-<br>||3600 Vp<br>|<br>|<br>|0.5/5 µs<br>|<br>|<br>||||| |||K<br>-<br>||4800 Vp<br>|<br>|0.1/1 µs<br>|<br>||||| |||L<br>-<br>||8400 Vp<br>|<br>|0.05/0.1 µs<br>|<br>||||A11| |Electrostatic<br>discharge<br>(to case)<br>—<br>Pf|IEC/EN<br>61000-4-2<br>Pffer|45<br>-<br>fer|contact discharge<br>a<br>fer|±8000 Vp<br>|<br>fer|1/50 ns<br>|<br>fer|330Ω<br>150 pF<br>fer|10 positive and<br>10 negative<br>discharges<br>fer|yes<br>fer|A| ||||air discharge<br>fer|±15000 Vp<br>fer|||||| |Electromagnetic<br>field<br>Pf|IEC/EN<br>61000-4-3<br>Pf fer|x6<br>-<br>fer|antenna<br>fer<br>fe|20 V/m<br>fer|AM 80%<br>1 kHz<br>fer|n.a.<br>fer<br>r|80 to 1000 MHz<br>fer|yes<br>fer|A11| |Electromagnetic<br>field,<br>pulse modulated<br>|<br>||ENV 50204<br>|47<br>fe||10 V/m<br>fe|50% duty cycle,<br>200 Hz repetition<br>frequency<br>r||900 ±5 MHz|yes|A| |Electrical fast<br>transient/burst<br>|<br>|<br>pf}|IEC/EN<br>61000-4-4<br><br>pf}|38<br>fe|capacitive, o/c<br>fe|±2000 Vp<br>fe|bursts of 5/50 ns<br>2.5/5 kHz over<br>15 ms; burst<br>period: 300 ms<br>r<br>art|50Ω<br>r<br>art|60 s positive<br>60 s negative<br>transients per<br>coupling mode<br>art|yes<br>art|A11| |||38<br>fe|direct, i/c, +i/–i<br>fe<br>art|±2000 Vp<br>fe|||||A11| |||4<br>fe<br>pf}||±4000 Vp<br>fe<br>art|||||B| |Surge<br>|<br>| <br>pf}|IEC/EN<br>61000-4-5<br> <br>pf}|39<br> fe<br>pf}|i/c<br>fe<br>art|2000 Vp<br>fe<br>art|1.2/50 µs<br>r<br>art|12Ω<br>r<br>art|5 pos. and 5 neg.<br>surges per<br>art|yes<br>art|A| ||||+i/–i<br>fe<br>art|1000 Vp<br>fe<br>art||2Ω<br>r<br>art|||| |Conducted<br>disturbances<br>pf}<br>a|IEC/EN<br>61000-4-6<br>pf}<br>a|310<br>pf}<br>a|i, o, signal wires<br>art<br>a|10 VAC<br>(140 dBµV)<br>art<br>a|AM 80%<br>1 k Hz<br>art<br>a|150Ω<br>art<br>a|0.15 to 80 MHz<br>art<br>a|yes<br>art<br>a|A<br>a| |Power frequency<br>magnetic field<br>pf}<br>a|IEC / EN<br>61000-4-8<br>pf}<br>a|3 12<br>pf} <br>a|--<br> art<br>a|100 A/m<br>art<br>a|art<br>a|art<br>a|60 s in all 3 axis<br>art<br>a|yes<br>art<br>a|A<br>a| - 1 i = input, o = output, c = case 2 A = normal operation, no deviation from specs.; B = normal operation, temporary loss of function or deviation from specs possible 3 RIA 12 covers or exceeds IEC 60571-1 and EN 50155:1995. Surge D corresponds to EN 50155:2001, waveform A; surge G corresponds to EN 50155:2001, waveform B. - 4 Only met with EM (110 V battery) and extended input range models (customer-specific) of BM (24 V battery) and CM (48 V battery). Standard DK models (72 V battery) are not damaged, but overvoltage lockout will occur during the surge. - 5 Exceeds EN 50121-3-2:2015 table 6.3 and EN 50121-4:2006 table 1.4. - 6 - 6 Corresponds to EN 50121-3-2:2015 table 6.1 and exceeds EN 50121-4:2006 table 1.1. Valid for version V104 or higher. 7 Compliance with digital mobile phones. - 8 - Corresponds to EN 50121-3-2:2015 table 5.2 and EN 50121-4:2006 table 2.2. - 9 - Covers or exceeds EN 50121-3-2:2015 table 4.3 and EN 50121-4:2006 table 2.3. - 10 Corresponds to EN 50121-3-2:2015 table 5.1 and EN 50121-4:2006 table 3.1 (radio frequency common mode). - 11 Perf. criterion B for triple-output models. - 12 Corresponds to EN 50121-4:2006 table 1.3 for AC systems _**MELCHER** The Power Partners._ Page 14 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Electromagnetic Emissions** **==> picture [213 x 135] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV PMM 8000 PLUS: Peak, conducted Vi+, QP + AV, 2011-08-02, 10:48 hCM1601-9ER, Ui=60 V, Uo=24 V Io= 2 A<br>80<br>EN 55022 A (qp)<br>EN 55022 A (av)<br>60<br>40<br>20<br>0<br>0.2 0.5 1 2 5 10 20 MHz<br>JM131<br>**----- End of picture text -----**<br> _Fig. 13a_ _Typ. conducted disturbances at the input (quasi-peak and average) of CM1601-9ER according to IEC/EN 55011/22, measured at V_ i _= 60 VDC and I_ o nom _._ **==> picture [216 x 137] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV PMM 8000 PLUS: Peak, conducted Vi+, QP + AV, 2011-08-02, 10:48 hCM1601-9ER, Ui=60 V, Uo=24 V Io= 2 A<br>80<br>EN 55022 A (qp)<br>EN 55022 A (av)<br>60<br>40 ] t Wh |<br>20<br>0<br>0.2 0.5 1 2 5 10 20 MHz<br>JM132<br>**----- End of picture text -----**<br> _Fig. 13b_ _Typ. conducted disturbances at the input (quasi-peak and average) of LM1601-9R according to IEC/EN 55011/22, measured at V_ i _= 230 VAC and I_ o nom _._ **==> picture [240 x 139] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV/m TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2011-08-03Testdistance 10 m, CM1601-9ER, Ui= 60 VDC, Uo=24 V Io= 2 A<br>50 EN 55011 A<br>40<br>30<br><25 dbµV/m<br>20<br>10<br>0<br>30 50 100 200 500 1000 MHz<br>JM130<br>**----- End of picture text -----**<br> _Fig. 14a_ _Typical radiated emissions of CM1601-9ER according to IEC/ EN 55011/22, normalized to a distance of 10 m, measured at V_ i _= 60 VDC and I_ o nom _._ **==> picture [243 x 140] intentionally omitted <==** **----- Start of picture text -----**<br> dBµV/m TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2011-08-02Testdistance 10 m, LM1601-9R, Ui=230 VAC, Uo=24 V Io= 2 A<br>50 EN 55011 A<br>40<br>30<br><25 dbµV/m<br>£2 ° °<br>20<br>10<br>0<br>30 50 100 200 500 1000 MHz<br>JM129<br>**----- End of picture text -----**<br> _Fig. 14b_ _Typical radiated emissions of LM1601-9R according to IEC/ EN 55011/22, normalized to a distance of 10 m, measured at V_ i _= 230 VAC and I_ o nom _._ _**MELCHER** The Power Partners._ Page 15 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Immunity to Environmental Conditions** _Table 10: Mechanical and climatic stress_ |**Test method**|**Test method**|**Standard**|**Test conditions**|**Status**| |---|---|---|---|---| |Db|Damp heat test,<br>cyclic|EN 50155:2007, clause 12.2.5<br>IEC/EN 60068-2-30|Temperature:<br>55 °C and 25 °C<br>Cycles (respiration effect):<br>2<br>Duration:<br>2×24 h|Converter<br>not<br>operating| |Bd|Dry heat test<br>steady state|EN 50155:2007, clause 12.2.4<br>IEC/EN 60068-2-2|Temperature:<br>70 °C<br>Duration:<br>6 h|Converter<br>operating| |Ad|Cooling test<br>steady state|EN 50155:2007, clause 12.2.3<br>IEC/EN 60068-2-1|Temperature, duration<br>–40 °C, 2 h<br>Performance test<br>+25 °C|Conv. not<br>operating| |Kb|Salt mist, cyclic<br>(sodium chloride<br>NaCl solution)|IEC/EN 60068-2-52|Concentration:<br>5% (30 °C)<br>Duration:<br>2 h per cycle<br>Storage:<br>40°C, 93% rel. humidity<br>Storage duration:<br>22 h per cycle, 3 cycles|Converter<br>not<br>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 each axis)|Converter<br>operating| |Fda|Random vibration<br>wide band<br>Reproducibility<br>high|IEC 60068-2-35<br>DIN 40046 part 23|Acceleration spectral density:<br>0.05 gn2/Hz<br>Frequency band:<br>20 – 500 Hz<br>Acceleration magnitude:<br>4.9 gn rms<br>Test duration:<br>3 h (1 h each axis)|Converter<br>operating| |Eb|Bump<br>(half-sinusoidal)|IEC/EN 60068-2-29<br>MIL-STD-810D section 516.3|Acceleration amplitude:<br>40 gn= 392 m/s2<br>Bump duration:<br>6 ms<br>Number of bumps:<br>6000 (1000 each direction)|Converter<br>operating| |Ea|Shock<br>(half-sinusoidal)|IEC/EN 60068-2-27<br>MIL-STD-810D section 516.3|Acceleration amplitude:<br>100 gn= 981 m/s2<br>Bump duration:<br>6 ms<br>Number of bumps:<br>18 (3 each direction)|Converter<br>operating| |--|Shock|EN 50155:2007 clause 12.2.11,<br>EN 61373 sect. 10,<br>class B, body mounted 1|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<br>increased random<br>vibration levels|EN 50155:2007 clause 12.2.11,<br>EN 61373 sect. 8 and 9,<br>class B, body mounted 1|Acceleration spectral density:<br>0.02 gn2/ 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)_ |**Temperature**|**Temperature**|**Temperature**|**-7 (option)**|**- 9 (standard)**|**Unit**| |---|---|---|---|---|---| |**Characteristics**||**Conditions**|**min**<br>**max**|**min**<br>**max**|| |_T_A|Ambient temperature|Operational|–25<br>71|–40<br>71|°C| |_T_C|Case temperature||–25<br>95|–40<br>95|| |_T_S|Storage temperature|Non operational|–40<br>85|–55<br>85|| ## **Reliability** _Table 12: MTBF_ |**Values at specified**<br>**case temperature**|**Converter model**|**Ground benign Ground fixed**<br>**40 °C**|**Ground benign Ground fixed**<br>**40 °C**<br>**70 °C**|**Ground benign Ground fixed**<br>**40 °C**<br>**70 °C**|**Ground mobile**<br>**50 °C**|**Device hours 2**|**Unit**| |---|---|---|---|---|---|---|---| |MTBF1|AM – LM1000<br>AM – LM2000<br>AM – LM3000|320 000<br>225 000<br>225 000|130 000<br>105 000<br>80 000|40 000<br>32 000<br>28 000|35 000<br>28 000<br>25 000|880 000<br>720 000<br>740 000|h| - 1 Calculated in accordance with MIL-HDBK-217E > 2 Statistical values, based on an average of 4300 working hours per year in general field use over 3 years _**MELCHER** The Power Partners._ Page 16 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Mechanical Data** Dimensions in mm. **==> picture [486 x 630] intentionally omitted <==** **----- Start of picture text -----**<br> European<br>Projection<br>> OO00O0000000 aa.<br>Mounting holes for connector retention clips<br>Male connector H11 according to DIN 41612<br>a 34 Oy<br>100 [±0.6] Caution! Gets hot!<br>Front plate<br>an |<br>_—_———————————————————<br>103<br>M 3; depth = 4 mm<br>(chassis mount)<br>Main Rear<br>face face<br>Measuring point for<br>22 case temperature T C<br>n al<br>ae |<br>Mounting plane of<br>connector H11<br>ne —— | |<br>(11.6) ——- 88 38.7<br>111.2 [±0.8 ] (3 U)<br>oo<br>_ 94.595 [ ±0.5][ ±0.1] Back plate<br>Fig. 15<br>22.30 Case M02, weight 770 g (approx.).<br>17.25 Case aluminum, black finish and self<br>12.17<br>7.09 7 7 C9008 | Oo cooling.<br>0<br>~ (@————————+ - — - - - - - - —- @®) - — Note: Long case, elongated by 60<br>| | f tant o | a<br>mm for 220 mm rack depth, is<br>Inhibit i (LED red) I oL (LED red) available on request.<br>OK (LED green) Test sockets (option A)<br>Potentiometer Potentiometer(s) (option P)<br>(option D or V)<br>2 5 8 11 14 17 20 23 26 29 32<br>28.6 12.1<br>6TE<br>3.27 20.5<br>15<br>2TE<br>1.6<br>20 09012c<br> ±0.5<br>168.5 159.4 127<br>173.7<br>68<br>4<br>30.48 25.40 20.32 15.24 10.16 5.08 0<br> ±0.1 ø 3.5 ø 4.0<br>IoL 31.5<br>1 2 3<br>OK i<br>**----- End of picture text -----**<br> ~~a~~ BCD20018-G Rev AE1, 16-Apr-2018 _**MELCHER** The Power Partners._ ~~a~~ Page 17 of 26 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Safety and Installation Instructions** ## **Connector Pin Allocation** Pin no. 26 (protective earth) is a leading pin, ensuring that it makes contact with the female connector first. **==> picture [88 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> Caution! Gets hot!<br>**----- End of picture text -----**<br> **==> picture [143 x 58] intentionally omitted <==** **----- Start of picture text -----**<br> 10015a<br>oft<br>32 29 26 23 20 17 14 11 8 5 2<br>**----- End of picture text -----**<br> Table 13: Pin allocation |**Electrical determination**|**AM – LM1000**<br>**Pin**<br>**Ident**|**AM – LM2000**<br>**Pin**<br>**Ident**|**AM – LM3000**<br>**Pin**<br>**Ident**| |---|---|---|---| |Inhibit<br>Safe Data or ACFAIL|2<br>i<br>55<br>D or V|2<br>i<br>55<br>D or V|2<br>i<br>55<br>D or V| |Output voltage (positive)<br>Output voltage (negative)|8<br>Vo+<br>11<br>Vo–|8<br>n.c.<br>11<br>n.c.|8<br>Vo3+<br>11<br>Vo3–| |Voltage adjust<br>Adjust return|14<br>R1<br>17<br>G1||| |Output voltage (positive)<br>Output voltage (negative)||14<br>Vo2+<br>17<br>Vo2–|14<br>Vo2+<br>17<br>Vo2–| |Output voltage (positive)<br>Output voltage (negative)<br>eo|20<br>Vo+<br>23<br>Vo–<br>meOO|20<br>Vo1+<br>23<br>Vo1–<br>OO|20<br>Vo1+<br>23<br>Vo1–<br>OO| |Protective earth PE2<br>eo|26<br>meOO|26<br>OO|26<br>OO| |DC input voltage3<br>DC input voltage<br>eo|29<br>Vi+<br>32<br>Vi–<br>meOO|29<br>Vi+<br>32<br>Vi–<br>OO|29<br>Vi+<br>32<br>Vi–<br>OO| |AC input voltage4<br>AC input voltage|29<br>N<br>32<br>L|29<br>N<br>32<br>L|29<br>N<br>32<br>L| - 1 Not connected if option P is fitted _Fig. 16_ _View of male H11 connector._ **Important:** Whenever the inhibit function is not in use, pin 2 (i) should be connected to pin 23 (Vo–) to enable the output(s). **Caution:** Do not open the converters, or warranty will be invalidated. Make sure that there is sufficient air flow possible for convection cooling. This should be verified by measuring the case temperature _T_ C, when the converter is installed and operated in the end-use application. The maximum specified case temperature _T_ C max shall not be exceeded. See also _Thermal Considerations._ ## **Operation of LM Models at Greater than 63 Hz** In such a case, the converters may exceed the leakage current of 3.5 mA imposed in the safety standards. A warning marking is required in the enduse product. - 2 Leading pin - 3 AM, BM, CM, DM, EM, and FM models ## **Protection Degree and Cleaning Liquids** - 4 LM models > 5 Not connected if option neither option D or V is fitted ## **Installation Instructions** All M Series converters are components, intended exclusively for inclusion within other equipment 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 H11 _._ Other installation methods may not meet the safety requirements. > The converters are provided with the leading pin 26 ( © ), which is reliably connected with the case. For safety reasons, it is essential to connect pin 26 with the protective earth of the supply system. An input fuse is connected in the line to pin 32 (Vi– or L ). Since this fuse is designed to protect the converter in case of an overcurrent and does not necessarily cover all customer needs, an external fuse suitable for the application and in compliance with the local requirements may be necessary in the wiring to one or both input pins (no. 29 and/or no. 32), particularly if the phase or neutral line cannot be assigned to the corresponding terminals (LM models operated with AC). Condition: Female connector fitted to the converter. - IP 40: All models, except those with options P or A, and except those with option D/V with potentiometer. - IP 30: All models fitted with options A or option D/V without potentiometer. - IP 20: All models fitted with option P or with option D/V with potentiometer. In order to avoid possible damage, any penetration of liquids (e.g., cleaning fluids) has to be avoided. ## **Railway Applications** The M Series converters have been designed observing the railway standards EN 50155 and EN 50121. All boards are coated with a protection lacquer. ## **Standards and Approvals** The converters correspond to class I equipment and have been approved according to the standards IEC/EN 60950-1 and UL/ CSA 60950-1 2[nd] Ed. The converters have been evaluated for: - Class I equipment - Building in - Basic insulation between input and case and double or reinforced insulation between input and output, based on _**MELCHER** The Power Partners._ Page 18 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ _Table 14: Isolation_ |_Table 14: Isolation_|_Table 14: Isolation_|||||| |---|---|---|---|---|---|---| |**Characteristic**||**Input to case**<br>**and output(s)**|**Output(s) to**<br>**case (standard)**|**Output(s) to**<br>**case (option H)**|**Output to**<br>**output**|**Unit**| |Electric<br>strength<br>test|Factory test >1 s|2.81|1.4|2.8|0.3|kVDC| ||AC test voltage equivalent<br>to factory test|2.0|1.0|2.0|0.2|kVAC| |Insulation resistance at 500 VDC||>300|>300|>300|>1002|MΩ| |Creepage distances||≥3.23|--|--|--|mm| - 1 According to IEC/EN 60950, subassemblies connecting input to output are pre-tested with 5.6 kVDC or 4 kVAC. - 2 Tested at 300 VDC - 3 Input to outputs: ≥ 6.4 mm the input voltage of 250 VAC or 400 VDC - Functional insulation between output(s) and case - Functional insulation between the outputs - Pollution degree 2 environment - Overvoltage category II - Altitude up to 2000 m The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO 9001:2008. ## **Isolation** 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. ## **Safety of Operator-Accessible Output Circuits** If the output circuit of a DC-DC converter is operatoraccessible, it shall be an SELV circuit according to the IEC/EN 60950 safety standards. Since the M Series converters provide double or reinforced insulation between input and output based upon a rated primary input voltage of 250 VAC or 400 VDC, only functional insulation is needed between the AC mains and the input of the converter. Only voltage adaption and rectification to the specified input voltage range of a DC/DC converter is needed. Table 15 shows a possible installation configuration, compliance with which causes the output circuit of the DC-DC converter to be an SELV circuit according to IEC/EN 60950 up to a configured output voltage (sum of nominal voltages if in series or +/– configuration) of 48 V. However, it is the sole responsibility of the installer to assure the compliance with the relevant and applicable safety regulations. **==> picture [235 x 88] intentionally omitted <==** **----- Start of picture text -----**<br> Max. 250 VAC or<br>400 VDC 10018a<br>~ +<br>AC-DC + Fuse DC-DC<br>Mains front Battery con- SELV<br>~ end Fuse verter –<br>Max. 250 VAC or Earth connection<br>400 VDC<br>**----- End of picture text -----**<br> **==> picture [104 x 23] intentionally omitted <==** **----- Start of picture text -----**<br> Fig. 17<br>Schematic safety concept<br>**----- End of picture text -----**<br> _Table 15: Safety concept leading to an SELV output circuit_ |**Conditions **|**Front end**|**Front end**|**Front end**|**DC-DC converter**|**DC-DC converter**|**Result**| |---|---|---|---|---|---|---| |Nominal<br>supply<br>voltage|Minimum required grade<br>of insulation, to be pro-<br>vided by the AC-DC front<br>end, including mains<br>supplied battery charger|Maximum rated<br>DC output voltage<br>from the front end|Minimum required<br>safety status of the<br>front end output<br>circuit|Equip-<br>ment|Measures to achieve the<br>specified safety status of<br>the output circuit|Safety status<br>of the DC-DC<br>converter<br>output circuit| |Mains<br>250 VAC|Operational (i.e. there is<br>no need for electrical<br>isolation between the<br>mains supply voltage and<br>theDC-DC converter<br>input voltage)|400 VDC1(The<br>rated voltage<br>between any input<br>pin and earth can<br>be up to 250 VAC<br>or 400 VDC.)|Primary circuit|A–LM|Double or reinforced<br>insulation, based on<br>250 VAC and 400 VDC<br>(provided by the DC-DC<br>converter) and earthed<br>case2|SELV circuit| - 1 The front end output voltage should match the specified operating input voltage range of the DC-DC converter. - 2 The earth connection has to be provided by the installer according to the safety standard IEC/EN 60950. _**MELCHER** The Power Partners._ Page 19 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Description of Options** _Table 16: Survey of options_ |**Option**|**Function of option**|**Characteristic**| |---|---|---| |-7|Former standard operational ambient temperature range|_T_A= – 25 to 71°C| |A|Test sockets at front panel for check of output voltage|_V_ointernally measured at the connector terminals| |E|Electronic inrush current limitation circuitry|Active inrush current limitation, only for CM, EM, LM models| |P1|Potentiometer for fine adjustment of output voltage|Adjustment range ±5% of_V_o nom, excludes R input| |F|Input fuse built-in|Fuse not externally accessible, only for FM1000| |H|Enhanced output to case electric strength test voltage|See table_Isolation_| |D2|Input and/or output undervoltage monitoring circuitry|Safe data signal output (D0 – D9)| |V2 3|Input and/or output undervoltage monitoring circuitry|ACFAIL signal according to VME specifications (V0, V2, V3)| |K|Coding strip at the connector|Ensuring correct population of DIN-racks| |G|RoHS|RoHS-compatible for all six substances| - 1 Models equipped with option P do not provide the R function; pins 14 and 17 are not connected. - 2 Option D excludes option V and vice versa. - 3 Only available if main output voltage _V_ o1 = 5.1 V _Table 17: Configuration of option A and option P_ |**Type of option**|**AM**–**LM1000**<br>**Output 1**|**AM**–**LM2000**<br>**Output 1**<br>**Output 2**|**AM**–**LM2000**<br>**Output 1**<br>**Output 2**|**AM**–**LM3000**<br>**Output 1**<br>**Output 2**<br>**Output 3**|**AM**–**LM3000**<br>**Output 1**<br>**Output 2**<br>**Output 3**|**AM**–**LM3000**<br>**Output 1**<br>**Output 2**<br>**Output 3**| |---|---|---|---|---|---|---| |Potentiometer1|yes|yes|yes|yes|no|no| |Test sockets|yes|yes|yes|yes|no|no| - 1 Models equipped with option P do not provide the R function; pins 14 and 17 are not connected. ## **-7 Former Standard Temperature Range** Option -7 stays for the operational ambient temperature range from –25 to 71 °C, which may be preferred by some customers for reasons of documentation or approvals. ## **A Test Sockets** Test sockets (pin Ø = 2 mm, distance d = 5.08 mm) are located at the front of the converter. The output voltage is sensed at the connector pins inside of the converter. Outputs 2 and 3 of tripleoutput models are not sensed. ## **P Potentiometer** Built-in multi-turn potentiometers provide an output voltage adjustment range of minimum ±5% of _V_ o nom and are accessible through holes in the front cover. Compensation of voltage drop across connector and wiring becomes easily achievable. For output voltages _V_ o > _V_ o nom, the minimum input voltage according to _Electrical Input Data_ increases proportionally to _V_ o/ _V_ o nom. Triple-output models allow only the adjustment of _V_ o1. **Note:** Potentiometers are not recommended for mobile applications. ## **E Electronic Inrush Current Limitation** Available for CM, EM and LM models. The standard version of the models CM, DM, EM and LM include a passive inrush current limitation with an NTC resistor. For applications requiring an improved inrush current limitation, an active electronic circuit as shown in fig.18 has been developed. Typical inrush current waveforms of units equipped with this option are shown below. CM models meet the CEPT/ETSI standards for 48 V supply voltage according to ETS 300132-2, if fitted with option E combined with option D6 (input voltage monitoring). Option D6, externally adjustable via potentiometer, is necessary to disable the converter at input voltages below the actual service ranges, avoiding an excessive input current when the input voltage is raised slowly according to ETS 300132-2. Option D6 threshold level _V_ t i + _V_ h i (refer to description of option D) should be adjusted to 36 – 40.5 V for 48 V nominal supply voltage (for 60 V systems, threshold should be set to 44 – 50 V). The D output (pin 5) should be connected to the inhibit (pin 2). For applications, where potentiometers are not allowed, refer to option D9. **==> picture [171 x 96] intentionally omitted <==** **----- Start of picture text -----**<br> 11018a<br>Po<br>Control logic<br>FET<br>Rectifier<br>| cl<br>(LM models)<br>R S R I C i<br>Input filter Converter<br>**----- End of picture text -----**<br> _Fig. 18 Option E block diagram_ _**MELCHER** The Power Partners._ Page 20 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ _Table 18: Inrush current characteristics with option E_ |**Characteristic**|**Characteristic**|**CM**<br>**at****_V_i = 110 VDC**<br>**typ**<br>**max**|**EM, LM**<br>**at****_V_i = 110 VDC**<br>**typ**<br>**max**|**EM, LM**<br>**at****_V_i = 372 VDC**<br>**typ**<br>**max**|**Unit**| |---|---|---|---|---|---| |_I_inr p<br>a|Peak inrush current|6.5<br>8|2.2<br>4|7.3<br>10|A| |_t_inr<br>a|Inrush current duration|22<br>30|10<br>20|20<br>40|ms| **==> picture [240 x 225] intentionally omitted <==** **----- Start of picture text -----**<br> I i [A]<br>10<br>11019a<br>8 CM at 110 VDC<br>EM, LM at 372 VDC<br>6<br>EM, LM at 110 VDC<br>4 t inr t inr<br>I i = P o/( V i • η )<br>2 Normal operation:<br>FET fully conducting<br>0 t [ms]<br>No<br>0 10 20 30 40<br>Fig. 19<br>Typical inrush current waveforms of CM, EM, and LM<br>converters with option E<br>**----- End of picture text -----**<br> ## Precautions: In order to avoid overload of the series resistor _R_ I, the on/off switching cycle should be limited to 12 s, if switched on/off continuously. There should not be more than 10 start-up cycles within 20 s at a case temperature of 25 °C. If CM models are driven by input voltages below 35 VDC or LM models below 100 VAC, the maximum case temperature should be derated by 10 °C, or the total output power should be derated by 20%. EM and LM models driven by DC input voltages do not need to be derated within the full specified input voltage range. ## **F Fuse Not Accessible** Standard M converters have a fuseholder containing a 5 × 20 mm fuse, which is externally accessible and located in the back plate near to the connector. Some applications require an inaccessible fuse. Option F provides a fuse mounted directly onto the main PCB inside the case (only FM1000). The full self-protecting functions of the converter do normally not lead to a broken fuse, except as a result of inverse polarity at the input of an AM, BM, CM, DM, or FM models, or if a power component inside fails. In such cases the defective converter must be returned to the Company for repair. ## **H Enhanced Electric Strenght Test** Electric strength test output to case; see table _Isolation_ . ## **D Undervoltage Monitor** The input and/or output undervoltage monitor operates independently of the built-in input undervoltage lock-out circuit. A logic "low" (JFET output) or "high" signal (NPN output) is generated at pin 5, when one of the monitored voltages drops below the preselected threshold level _V_ t. The return for this signal is Vo1– (pin 23). The D output recovers, when the monitored voltage(s) exceed(s) _V_ t + _V_ h. The threshold level _V_ t is either adjustable by a potentiometer accessible through a hole in the front cover, or adjusted in the factory to a fixed value specified by the customer. Option D exists in various versions D0 – D9, as shown in the table below: _Table 19: Undervoltage monitor functions_ |**Output type**<br>**JFET**<br>**NPN**|**Output type**<br>**JFET**<br>**NPN**|**Monitoring**<br>**_V_i**<br>**_V_o1**|**Monitoring**<br>**_V_i**<br>**_V_o1**|**Minimum adjustment range**<br>**of threshold level****_V_t**<br>**_V_ti**<br>**_V_to**|**Minimum adjustment range**<br>**of threshold level****_V_t**<br>**_V_ti**<br>**_V_to**|**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**| |---|---|---|---|---|---|---|---| |D1<br>a<br>Se|D5<br>a<br>Se|no<br>a<br>Se|yes<br>a<br>ee|–<br>a<br>ee|3.5 V – 48 V1<br>a<br>ee|–<br>a<br>ee|2.3 – 1<br>a| |D2<br>a<br>Se<br>ee|D6<br>a<br>Se<br>ee|yes<br>a<br>Se<br>ee|no<br>a<br>ee<br>eeee|_V_i min–_V_i max1<br>a<br>ee<br>ee|–<br>a<br>ee<br>ee|3.0 – 0.5<br>a<br>ee<br>ee|–<br>a| |D3<br>Se<br>ee<br>a|D7<br>Se<br>ee<br>ee|yes<br>Se<br>ee<br>ee|yes<br>ee<br>eeee<br>ee|_V_i min–_V_i max1<br>ee<br>ee|0.95 – 0.98_V_o12<br>ee<br>ee|3.0 – 0.5<br>ee<br>ee<br>eeee|"0"<br>ee| |D4<br>Se<br>ee<br>a|D8<br>Se<br>ee<br>ee|no<br>Se <br>ee<br>ee<br>Se|yes<br> ee<br>eeee<br>ee<br>Se|_–_<br>ee<br>ee|0.95 – 0.98_V_o12<br>ee<br>ee|_–_<br>ee<br>ee<br>eeee|"0"<br>ee| |D0<br>ee<br>a|D9<br>ee<br>ee|no<br>ee<br>ee<br>Se<br>ee|yes<br>eeee<br>ee<br>Se|–<br>ee|3.5 V – 48 V3<br>ee|–<br> ee<br>eeee|1.8 – 1<br>ee| |||yes<br> ee<br>Se<br>ee|no<br>ee<br>Se|_V_i min–_V_i max3 4|–|2.2 – 0.4<br>eeee|–<br>ee| |||yes<br>Se<br>ee|yes<br>Se|_V_i min–_V_i max3 4|0.95 – 0.98_V_o12|2.2 – 0.4|| > 1 Threshold level adjustable by potentiometer (not recommended for mobile applications) - 2 Fixed value between 95% and 98% of _V_ o1 (tracking) > 3 Fixed value, resistor-adjusted according to customer's specification ±2% at 25 °C; individual type number is determined by the company. > 4 Adjusted at _I_ o nom _**MELCHER** The Power Partners._ Page 21 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **JFET output (D0 – D4):** Connector 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. |_V_i,_V_o1status|D output,_V_D| |---|---| |_V_ior_V_o1<_V_t|low, L,_V_D ≤0.4 V at_I_D= 2.5 mA| |_V_iand_V_o1>_V_t+_V_h|high, H,_I_D ≤25 µA at_V_D= 5.25 V| ## **NPN output (D5 – D9):** Connector pin D is internally connected via the collectoremitter 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. |the open collector should not exceed 20 mA. The NPN output<br>is not protected against external overvoltages.<br>exceed 40 V.|the open collector should not exceed 20 mA. The NPN output<br>is not protected against external overvoltages._V_D should notshould not| |---|---| |_V_i,_V_o1status|D output,_V_D| |_V_ior_V_o1<_V_t|high, H,_I_D ≤25 µA at_V_D= 40 V| |_V_iand_V_o1>_V_t+_V_h|low, L,_V_D ≤0.4 V at_I_D= 20 mA| ## Threshold tolerances and hysteresis: If _V_ i is monitored, the internal input voltage after the input filter and rectifier (EM and LM types) is measured. Consequently, this voltage differs from the voltage at the connector pins by the voltage drop ∆ _V_ ti across input filter and rectifier. The threshold level of the D0 and D9 options is adjusted in the factory at nominal output current _I_ o nom and _T_ A = 25 °C. The value of ∆ _V_ ti depends upon input voltage range (AM, BM, etc.), threshold level _V_ t, temperature, and input current. **==> picture [214 x 116] intentionally omitted <==** **----- Start of picture text -----**<br> V D ∆ V ti V hi 11021a<br>V<br>D high<br>V D low<br>V i<br>V ti<br>o nom o nom<br> = 0 P = 0 P<br>o o<br>P = P =<br>o o<br>P P<br>**----- End of picture text -----**<br> _Fig. 22 Definition of V_ ti, ∆ _V_ ti _, and V_ hi _(JFET output)_ **==> picture [186 x 117] intentionally omitted <==** **----- Start of picture text -----**<br> 11006<br>Vo1+<br>R<br>p<br>I D<br>D<br>V D<br>—> Vo1–<br>Input<br>**----- End of picture text -----**<br> _Fig. 20 Options D0 – D4, JFET output_ **==> picture [183 x 115] intentionally omitted <==** **----- Start of picture text -----**<br> 11007a<br>Vo1+<br>R<br>p<br>I D<br>D<br>V D<br>Vo1–<br>Input<br>**----- End of picture text -----**<br> _Fig. 21 Options D5 – D9, NPN output_ _**MELCHER** The Power Partners._ Page 22 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ **==> picture [477 x 526] intentionally omitted <==** **----- Start of picture text -----**<br> Input voltage monitoring<br>NPN V D 11008a<br>V<br>D high<br>3 3 3 3<br>V D low<br>0 Ph oo a oon t<br>I D<br>I<br>D high<br>I D low<br>0 ee a t<br>JFET V D<br>V<br>D high<br>V D low<br>0 To oe 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 oe a a t<br>V i [V DC]<br>V ti + V hi<br>V ti<br>0 : / \/ JN 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>I D<br>I<br>D high<br>I D low<br>0 an t<br>JFET V D Fig. 23<br>V<br>D high Relationship between V i , V o1 , V D , I D, and V o1<br>versus time.<br>V D low<br>0 fo t<br>t low min4 1 See Electrical Output Data for hold-up time.<br>V o1 nom V o1 2 With output voltage monitoring the hold-up time<br>V to + VV hoto 3 The D signal remains high, if the D output is<br>connected to an external source.<br>0 t 4 t low min = 40 – 200 ms, typically 80 ms<br>Output voltage failure<br>**----- End of picture text -----**<br> _Relationship between V_ i _, V_ o1 _, V_ D _, I_ D, _and V_ o1 _/V_ o nom _versus time._ - 2 With output voltage monitoring the hold-up time _t_ h = 0 ## **V ACFAIL Signal (VME)** pull-up resistor feeding the open-collector output should be placed on the VME backplane. Available for converters with _V_ o1 = 5.1 V. This option defines an undervoltage monitoring circuit for the input or the input and After the ACFAIL signal has gone low, the VME standard main output voltage equivalent to option D and generates the requires a hold-up time _t_ h of at least 4 ms before the 5.1 V of at least 4 ms before the 5.1 V ACFAIL signal (V signal), which conforms to the VME standard. output drops to 4.875 V, when the 5.1 V output is fully loaded. The low state level of the ACFAIL signal is specified at a sink This hold-up time _t_ h is provided by the internal input is provided by the internal input current of _I_ V = 48 mA to _V_ V ≤ 0.6 V (open-collector output). The capacitance. Consequently the working input voltage and the 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 of at least 4 ms before the 5.1 V output drops to 4.875 V, when the 5.1 V output is fully loaded. This hold-up time _t_ h is provided by the internal input is provided by the internal input _**MELCHER**_ ~~ee~~ BCD20018-G Rev AE1, 16-Apr-2018 _The Power Partners._ Page 23 of 26 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ threshold level _V_ ti should be adequately above the minimum input voltage _V_ i min of the converter, so that enough energy is remaining in the input capacitance. If the input voltage is below the required level, an external hold-up capacitor ( _C_ i ext) should be added. Formula for threshold level for desired value of _t_ h: **==> picture [167 x 24] intentionally omitted <==** Formula for additional external input capacitor **==> picture [171 x 21] intentionally omitted <==** whereas: - _C_ i min = minimum internal input capacitance [mF], according to the table below - _C_ i ext = external input capacitance [mF] - _P_ o = output power [W] - η = efficiency [%] - _t_ h = hold-up time [ms] - _V_ i min = minimum input voltage [V] - _V_ ti = threshold level [V] **Notes:** The threshold level _V_ ti of option V2 and V3 is adjusted in the factory to a value according to the table below. A decoupling diode should be connected in series with the input of AM, BM, CM, DM, and FM converters to avoid the input capacitance discharging through other loads connected to the same source voltage. If LM models are powered by AC, an external input capacitor cannot be applied unless an additional rectifier is provided. _Table 20: Available internal input capacitance and factory potentiometer setting of U_ t i _with resulting hold-up time_ |_Table 20: Available internal input capacitance and factory potentiometer setting of U_|_Table 20: Available internal input capacitance and factory potentiometer setting of U_|_Table 20: Available internal input capacitance and factory potentiometer setting of U_|_Table 20: Available internal input capacitance and factory potentiometer setting of U_|_Table 20: Available internal input capacitance and factory potentiometer setting of U_|_Table 20: Available internal input capacitance and factory potentiometer setting of U_t i_with resulting hold-up time_|_with resulting hold-up time_|_with resulting hold-up time_|| |---|---|---|---|---|---|---|---|---| |**Types**|**AM**|**BM**|**CM**|**DM**|**EM**|**FM**|**LM**|**Unit**| |_C_i min|2.6|0.67|0.37|0.14|0.14|0.37|0.14|mF| |_V_t i|9.5|19.5|39|61|104|39|120|VDC| |_t_h|0.34|0.69|1.92|1.73|6.69|2.92|8.18|ms| Option V operates independently of the built-in input undervoltage lockout circuit. A logic "low" signal is generated at pin 5 as soon as one of the monitored voltages drops below the preselected threshold level _V_ t. The return for this signal is Vo1– (pin 23). The V output recovers, when the monitored voltage exceeds _V_ t + _V_ h. The threshold level _V_ t is either adjustable by a potentiometer, accessible through a hole in the front cover, or adjusted in the factory to a determined customer-specific value. Versions V0, V2 and V3 are available as shown below. _Table 21: Undervoltage monitor functions_ |_Table 21: Undervoltage monitor functions_||||||||| |---|---|---|---|---|---|---|---|---| |**V output**<br>**Monitoring**<br>**Minimum adjustment range**||**Typical hysteresis ****_U_h **||**h[% of****_V_t]**||||| |**(VME compatible)**<br>**of threshold level****_V_t**||**for****_V_t min **–**_V_t max**||||||| |**_V_i**<br>**_V_o1**<br>**_V_ti**<br>**_V_to**||**_V_hi**||||**_V_ho**||| |V2<br>yes<br>no<br>_V_i min–_V_i max1<br>–||3.0 – 0.5||||||-| |V3<br>yes<br>yes<br>_V_i min–_V_i max1<br>0.95 – 0.98_V_o12||3.0 – 0.5|||||"0"|| |V0<br>yes<br>no<br>_V_i min–_V_i max3 4<br>-||2.2 – 0.4||||||-| |yes<br>yes<br>_V_i min–_V_i max3 4<br>0.95 – 0.98_V_o12||2.2 – 0.4|||||"0"|| |1Threshold level adjustable by potentiometer (not recommended for mobile applications).||||||||| |2Fixed value between 95% and 98% of_V_o1(tracking), output undervoltage monitoring is not a requirement of VME standard.||(tracking), output undervoltage monitoring is not a requirement of VME standard.|(tracking), output undervoltage monitoring is not a requirement of VME standard.|||||| |3Adjusted at_I_o nom.||||||||| |4Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.|Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.||||Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.|Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.|Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.|Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company.| |**V output (V0, V2, V3):**||11009a||||||| |Connector pin V is internally connected to the open collector of<br>a NPN transistor. The emitter is connected to the negative<br>potential of output 1._V_V- 0.6 V (logic low) corresponds to a<br>monitored voltage level (_V_iand/or_V_o1) <_U_t. The current_I_V<br>through the open collector should not exceed 50 mA. The NPN<br>output is not protected against external overvoltages._V_V<br>should not exceed 80 V.<br>_Fig. 24_<br>_Output configuration of options V0, V2, V3_<br>**_V_i, ****_V_o1 status**<br>**V output,****_V_V**<br>_V_ior_V_o1<_V_t<br>low, L,_V_V ≤0.6 V at_I_V= 50 mA<br>_V_iand_V_o1>_V_t+_V_h<br>high, H,_I_V ≤25 µA at_V_V= 5.1 V<br>Vo1+<br>Vo1–<br>V<br>_V_V<br>_I_V<br>Input<br>—9<br>-<br>—||||||||_R_p| - 4 Fixed value, resistor-adjusted (±2%) acc. to customer's specifications; individual type designation is determined by the company. _**MELCHER** The Power Partners._ Page 24 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Threshold tolerances and hysteresis:** _V_ i is monitored after the input filter and rectifier (EM and LM models). Consequently, this voltage differs from the voltage at the connector pins by the voltage drop ∆ _V_ t i across input filter and rectifier. The threshold level of option V0 is factoryadjusted at _I_ o nom and _T_ A = 25 °C. ∆ _V_ t i depends upon the input voltage range (AM, BM, ...), threshold level _V_ t i, temperature, and input current. **==> picture [232 x 517] intentionally omitted <==** **----- Start of picture text -----**<br> V2Input voltage monitoringUV high V V 3 3 t low min 2 4<br>V V low<br>0<br>V3 V V V 3 3 t low min 2<br>V high<br>V V low<br>0<br>V o1 t h 1<br>5.1 V<br>4.875 V<br>2.0 V<br>0<br>V i [VDC]<br>V ti + V hi<br>V i NX 7.<br>0<br>Input voltage failure Switch-on cycle<br>Output voltage monitoring<br>V2 V V<br>V<br>V high<br>V V low 4 4<br>t<br>0<br>V3 V V V 3 3 t low min 2<br>V high 4<br>V V low<br>0 t<br>V o1<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> **==> picture [237 x 398] intentionally omitted <==** **----- Start of picture text -----**<br> V V ∆ V ti V hi 11023a<br>V<br>V high<br>V V low<br>V i<br>Fig. 25 V ti<br>Definition of V ti , ∆ V ti and V hi<br>t low min 2 t low min 2<br>3 11010a<br>4<br>t<br>t low min 2<br>3<br>t<br>t h 1<br>t<br>No [.-------™<br>t<br>Input voltage sag Switch-on cycle and subsequent<br>input voltage failure<br>o nom o nom<br> = 0 P = 0 P<br>o o<br>P = P =<br>o o<br>P P<br>**----- End of picture text -----**<br> _Fig. 26_ _Relationship between V_ i _, V_ o1 _, V_ V _, I_ V _, and V_ o1 _/V_ o nom _versus time._ - 1 VME request: minimum 4 ms - 2 _t_ low min = 40 – 200 ms, typically 80 ms - 3 _V_ V level not defined at _V_ o1 < 2.0 V - 4 The V signal drops simultaneously with the output voltage, if the pull-up resistor _R_ P is connected to Vo1+. The V signal remains high, if _R_ P is connected to an external source. ## **K Coding Strip** A plastic part across the connector ensures correct population of the DIN-rack. ## **G RoHS** RoHS-compatible for all six substances. _**MELCHER** The Power Partners._ Page 25 of 26 BCD20018-G Rev AE1, 16-Apr-2018 _**M Series Data Sheet 50 Watt DC-DC and AC-DC Converters**_ ## **Accessories** A great variety of electrical and mechanical accessories are available including: - Various mating H11 connectors including solder, fast-on, or press-fit terminals - Pair of connector retention clips HZZ01209-G - Code key system: 5 coding wedges HZZ00202-G - Various front panels for 19" rack mounting - Flexible H11 PCB board HZZ01208-G for connecting with a mother board **==> picture [207 x 69] intentionally omitted <==** **----- Start of picture text -----**<br> European<br>Projection<br>30<br>09125<br>l 65<br>l: 2 m standard length e ee a h adhesive tape<br>other cable lengths on request<br>15<br>**----- End of picture text -----**<br> _Battery temperature sensor S-KSMH..._ - Universal mounting bracket UMB-LHMQ (HZZ00610-G) for chassis or DIN-rail mounting in upright position. - DIN-rail mounting brackets DMB-MHQ (HZZ00619-G) - Mounting plate M (HZZ01208) for chassis or a wall mounting, where only frontal access is given - Battery sensor [S-KSMH...] for using the converter as battery charger (different cell characteristics). **For additional accessory product information, see the accessory data sheets listed with each product series or individual model at our web site.** _Pair of connector Flexible H11 PCB retention clips HZZ01208-G HZZ01209-G_ _DIN-rail mounting brackets DMB-MHQ (HZZ00619-G)_ _Mounting plate M (HZZ01210), connector with fast-on terminals (HZZ00101-G), secured with retention clips (HZZ01209-G)_ _Universal mounting bracket for DIN-rail mounting (HZZ00610-G)_ _Different front panels_ 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. **Copyright © 201 8 , Bel Power Solutions Inc. All rights reserved.** **bel fuse.com/ power - solutions** _**MELCHER** The Power Partners._ Page 26 of 26 BCD20018-G Rev AE1, 16-Apr-2018
Updated at June 4, 2026
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