# POWER SUPPLY, AC-DC, 24V, 8.75A

![Product image](https://novapart.co/image/farnell:3595758/)

**URL**: https://novapart.co/products/MDS-300ADB24%20AA/power-supply-ac-dc-24v-875a
**SKU**: MDS-300ADB24 AA
**Manufacturer**: DELTA ELECTRONICS
**Category**: Power & Line Protection || Power Supplies || AC / DC Converters || AC / DC Enclosed Power Supplies
**Price**: €139.7000
**Stock**: 10+
**Lead Time**: 401 days (indicative)

## Description

Power Supply Applications:ITE & Medical; No. of Outputs:1Outputs; Output Power Max:210W; Output Voltage - Output 1:24V; Output Current - Output 1:8.75A; Output Voltage 52AH7301

## Specifications

| Parameter | Value |
|---|---|
| Product Range | MDS Series |
| No. Of Outputs | 1Outputs |
| Output Power Max | 210W |
| Input Voltage Vac | 90V AC to 264V AC |
| Power Supply Output Type | Fixed |
| Output Current - Output 1 | 8.75A |
| Output Current - Output 2 | - |
| Output Current - Output 3 | - |
| Output Current - Output 4 | - |
| Output Voltage - Output 1 | 24V |
| Output Voltage - Output 2 | - |
| Output Voltage - Output 3 | - |
| Output Voltage - Output 4 | - |
| Power Supply Applications | ITE & Medical |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3595758/)

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## **MDS-300ADB24** 

## **Highlights & Features** 

- Safety Approvals to IEC 60601-1 3.1rd ed. & IEC 60950-1 

- • Compliant with IEC 60601-1-2 4th Ed. Requirements 

- Up to 210 Watt Convection in 3.5" x 5.5" x 1.75" Package 

- • Up to 800 K Hrs MTBF 

- Suited for Type BF Medical Products. 

- 2 x MOPP isolation 

## **Safety Standards** 

CB Certified for worldwide use 

**Model Number:** MDS-300ADB24 **Unit Weight:** 610 g (1.35 lb) 88.9 x 140.0 x 45.0 mm (3.5 x 5.5 x 1.75 inch) 

**Dimensions (W x L x H):** 

## **General Description** 

Delta’s new MDS-300ADB24 enclosed design offers a high energy density (8.8 Watts/in[3] ) 3.5x5.5 inch design for Type BF patient access medical products.  With operating parameters of  90 to 264 Vac universal input voltage, temperatures of -10 to +70 degrees centigrade, and altitudes of up to 5000 meters (16,400 feet), the design is well suited for a variety of  both medical and non-medical applications. Other features include input surge of 300 Vac, low leakage current, no-load input power < 0.5 Watt, and 800K hour MTBF. This product is certified for EMC standards EN 55011 for industrial, scientific and medical (ISM) radio-frequency equipment, and EN 55032 for Industrial Technology Equipment (ITE) radio-frequency equipment. In addition, only recognized Japanese capacitors are used to ensure long product life. 

An enhanced feature set, includes a 5 Volt/0.5 amp standby output, remote on/off, remote sense, and a power good signal that are included as part of the standard product. 

The design, which has protection against shock compliant with 2XMOPP and Type BF requirements, has both medical (with risk report available), and ITE safety approvals, including cURus (US & Canada)/TUV/GB (China); plus, CB certificates with all national deviations. Full compliance with RoHS Directive 2011/65/EU for environmental protection is included. 

**Model Information** (All with 5V/0.5A standby available): 

|**Model Information** (All with 5V/0.5A standby available):|(All with 5V/0.5A standby available):|(All with 5V/0.5A standby available):|||
|---|---|---|---|---|
|**ModelNumber**|**Input Voltage**|**OutputVoltage**|**Convection Current Output**|**Forced Air Current Output**|
|MDS-300ADB24|90-264Vac|24Vdc|0-8.75A|0-12.5A(with 10 CFM forced air)|



## **Model Numbering** 

**==> picture [525 x 113] intentionally omitted <==**

**----- Start of picture text -----**<br>
MDS  300  A  D  B  24  <br>Delta Medical Power  Max wattage in the  Family Code  Product Type  Input Type Code Output Voltage  Revision code,<br>Supply product series.  300 → 300W A ~ Z D: Enclosed  B: 3pin Class I  24 for 24V  Refer to page 8<br>ee es  | es : es | ee | en  |<br>All parameters are specified at 25°C ambient unless otherwise noted.<br>  www.DeltaPSU.com (June 2019, Rev. 06)<br>**----- End of picture text -----**<br>


1 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## **Specifications** 

## Input Ratings / Characteristics 

|**Specifications**<br>Input Ratings / Characteristics||
|---|---|
|Nominal Input Voltage|100-240Vac|
|Input Voltage Range|90-264Vac|
|Nominal Input Frequency|50-60Hz|
|Input FrequencyRange|47-63Hz|
|Input Current(max)|4A|
|Input Surge Voltage(max)|300Vac for 100ms|
|Full load Efficiency (typ.)|93% @ 115Vac/60Hz<br>94% @ 230Vac/50Hz, Reference Fig.1|
|Standby Power (max)|0.5W (Inhibit signal high, 24 volt turned off)<br> @115Vac/60Hz, 230Vac/50Hz|
|Inrush Current(max)|40A@230Vac, cold start|
|Input-PE (protective earth)leakage current(max)|0.1mA@NC1), 0.3mA@SFC1)|
|Output-PE (protective earth)leakage current for Type BF application(max)|0.1mA@NC1), 0.5mA@SFC1)|
|Power Factor(min)|0.9@115V/50Hz, 230V/50Hz, full load|



1) NC: normal condition, SFC: single fault condition 

## Leakage Current 

|Leakage Current|||||
|---|---|---|---|---|
|Input-PE Leakage Current|100Vac/60Hz(Typ)264Vac/60Hz|264Vac/60Hz(Typ)Delta Limit|Delta Limit|IEC60601-1 Limit|
|Normal Condition  17.5uA|Normal Condition  17.5uA|43.5uA|100uA max|5000uA max|
|Single Fault Condition  32.9uA|le Fault Condition  32.9uA|90.7uA|300uA max|10000uA max|
|Output-PE Leakage Current for Type BF application|||||
|Normal Condition  28.5uA|Normal Condition  28.5uA|86.7uA|100uA max|100uA max|
|Single Fault Condition  42.9uA|le Fault Condition  42.9uA|128.6uA|500uA max|500uA max|



**Fig.1 Efficiency versus output load** 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

2 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## Output Ratings / Characteristics (Main Output) 

|Output Ratings / Characteristics (Main Output)||
|---|---|
|Nominal Output Voltage(Vrated)|24V|
|Total Regulation|± 3%|
|Output Power|300W 10CFM air, upto 210W convection air|
|Line Regulation(max)|± 0.5%|
|Load Regulation(max)|± 1%|
|Ripple & Noise (typ.)|1% pk-pk Vrated @ 300W load,<br>(Refer to  Fig. 2 & Fig. 3)|
|Start-upTime(max)|2000ms@115Vac|
|Hold-up Time (min)|10ms @ 100Vac and 115Vac, with 300W load<br>20ms@100Vac and 115Vac, with 190W load|
|Dynamic Response(Overshoot & Undershoot O/P Voltage)|± 5%@with 50-100% load change|
|Capacitive load(max)|1500uF|
|Rise time(max)|100ms|
|Remote Sense|Up to 500mV compensation for voltage drop across<br>external wire connections to load.<br>Short and reverse connectionprotected.|



(a) 115V (measured value=106mV) (b) 230V(measured value=104mV) 

**Fig.2  Ripple & Noise example, 20MHz BW** 

Output Ratings / Characteristics (Standby Output) 

|Output Ratings / Characteristics (Standby Output)||
|---|---|
|Nominal Output Voltage of standbyoutput(Vrated)|5V|
|Total Regulation of standbyoutput|± 3%|
|Ripple & Noise of  standbyoutput|100mV max(Refer to Fig. 3)|



**==> picture [425 x 98] intentionally omitted <==**

**----- Start of picture text -----**<br>
PSU Load<br>0.47uF Ceramic | Scope<br>5cm<br>10uF Electrolytic<br>Test Fixture<br>**----- End of picture text -----**<br>


**Fig. 3 Ripple & Noise measurement circuit** 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

3 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

|Mechanical|||
|---|---|---|
|Case Cover||Enclosed cover (SPCC)|
|Dimensions (W x L x H)||88.9x140.0x45.0mm (3.5x5.5x1.75 inch)|
|Unit Weight||610g (1.34lb)|
|Environment|||
|Surrounding Air Temperature|Operating|Absolute Maximum/Minimum Rating.|
|||-10°C to +70°C. Linearly derate  from 100% load at|
|||50°C,  to 50% load at 70°C (2.5%/ degree centigrade)|
|||Note: see power de-rating curves below|
||Storage|-40°C to +85°C|
|OperatingHumidity||5-95% RH(Non-Condensing)|
|OperatingAltitude||5,000 meters(16,400 feet or 50kPa)|
|Non-operatingAltitude||5,000 meters(16,400 feet or 50kPa)|
|Shock Test(Non-Operating)||50G, 11ms, 3 shocks for each direction|
|Vibration(Operating)||5-500Hz, 2Grms, 15 minute for each three axis|



Power De-rating curves 

Load De-rating Fixture and Test Setup. Fan is DELTA Part Number AFB0512HHD. 

**==> picture [72 x 5] intentionally omitted <==**

**----- Start of picture text -----**<br>
Airflow Direction 10CFM<br>**----- End of picture text -----**<br>


All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

4 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

Protections (for both 24 Volt and 5Volt Standby outputs, unless otherwise indicated) 

|Overvoltage (max)|||Main output  125% of rated voltage, Latch Mode|
|---|---|---|---|
||||Standby Output 125% of rated voltage, Latch Mode|
|Over load / Over current (max)|||Main output 160% of rated current|
||||Standby Output 1.06A max|
||||Hiccup Mode(Non-Latching, Auto-Recovery)|
|Over Temperature|||Latch Mode for main output|
|Short Circuit|||Hiccup Mode,|
||||(Non-Latching,Auto-Recovery)|
|Reliability Data||||
|MTBF(Minimum) at 115Vac, 210W, 35 °C|MTBF(Minimum) at 115Vac, 210W, 35 °C|Convection Air Flow|800 Khrs based on Telecordia SR-332|
|Operating life(Minimum) at 115Vac, 210W, 25°C   Convection Air Flow|Operating life(Minimum) at 115Vac, 210W, 25°C   Convection Air Flow|Operating life(Minimum) at 115Vac, 210W, 25°C   Convection Air Flow|26,280 hrs|
|Safety Standards / Directives||||
|Medical Safety|||IEC60601-1 2nd, 3rdand 3.1rdedition CB report|
||||IEC60601-1 edition 3.1rd(2012), EN60601-1 (2006) +|
||||A11 + A1 + A12, CAN/CSA-C22.2 NO. 60601-1:14,|
||||ANSI/AAMI ES60601-1:2005/(R)2012|
|ITE Safety|||IEC60950-1 CB report|
||||TUV60950-1|
||||UL60950-1+CAN/CSA60950-1|
||||GB4943.1-2011, GB9254-2008, GB17625.1-2003|
|CE|||MDD Directive 93/42/EEC|
|Environmental|||RoHS Directive 2011/65/EU Compliant|
|Galvanic Isolation||Input to/Output (2XMOPP)|4000 Vac|
|||Input to/Ground (1XMOPP)|1500 Vac1)|
||Output to/Ground (1XMOPP)||1500 Vac (Type BF application rated)|



1) PSU can support PoE applications with Primary to FG 2500Vac test. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

5 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## EMC (Compliant with IEC-60601-1-2 4[th] Ed. requirements) 

|EMC (Compliant with IEC-60601-1-2 4[th]Ed. requirements)||
|---|---|
|EMC / Emissions|EN55011/EN55032, FCC Title 47:Class B|
|Harmonic Current Emissions<br>IEC61000-3-2|Meet Class D limit|
|Immunity to||
|Voltage Flicker<br>IEC61000-3-3||
|Electrostatic Discharge<br>IEC61000-4-2|Level 4 Criteria A1)<br>Air Discharge: 15kV<br>Contact Discharge: 8kV|
|Radiated Field<br>IEC61000-4-3|Criteria A1)<br>80MHz-2700MHz, 10V/m AM modulation<br>385MHz-5785MHz, 28V/m Pulse mode and other<br>modulation|
|Electrical Fast Transient / Burst<br>IEC61000-4-4|Level 3 Criteria A1):2kV|
|Surge<br>IEC61000-4-5|Level 3 Criteria A1)<br>Common Mode3): 2kV<br>Differential Mode4): 1kV|
|Conducted<br>IEC61000-4-6|Level 2 Criteria A1)<br>150kHz-80MHz, 3Vrms, 6Vrms at ISM bands and<br>Amateur radio bands|
|Power Frequency Magnetic Fields<br>IEC61000-4-8|Criteria A1)<br>Magnetic field strength 30A/m|
|Voltage Dips<br>IEC61000-4-11|Criteria A1)<br>0% UT, 0.5 cycle (10ms),<br>0o/45o/90o/135o/180o/225o/270o/315o/360o<br>Criteria B2)(Criteria A1)with 190W load)<br>0% UT, 1 cycle (20ms),  0o<br>Criteria B2)<br>70% UT, 25 cycle (500ms), 0o<br>Criteria B2)<br>0% UT, 250 cycle (5000ms), 0o|



- 1) Criteria A: Normal performance within the specification limits 

- 2) Criteria B: Output out of regulation, or shuts down during test. Automatically restore to normal operation after test. 

- 3) Asymmetrical: Common mode (Line to earth) 

- 4) Symmetrical: Differential mode (Line to line) 

- 5) Unless otherwise noted, requirements apply at 300 watt output load 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

6 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## **Dimensions** 

Mechanical Drawing 

## **Notes** 

- Dimensions are in mm(inches) 

- There are two locations where assembled power supply is connected to the customer’s product 

   - a. Bottom mounting, use (4X) M3 screws to affix assembled power supply to product’s enclosure.  Extruded hole with thread must be withstand 9Kgf.cm (7.81lb-in) min. Maximum allowed screw penetration is 3.5mm (0.138 inch). 

   - b. Side mounting, use (2X) M3 screws to affix one side of assembled power supply to the product’s enclosure.  Extruded hole with thread must be withstand 9Kgf.cm (7.81lb-in) min. Maximum allowed screw penetration is 3.5mm (0.138 inch). 

All parameters are specified at 25°C ambient unless otherwise noted. 

7 

**www.DeltaPSU.com (June 2019, Rev. 06)** 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

- CN1 mates with Molex housing 26-03-4030 and Molex series 6838 crimp terminals. Input Line can also be connected to Input Neutral, and Input Neutral can be connected to Input Line. 

- CN102 & CN103(Output Connector): Cross recessed pan head screws M3X0.5x10, with spring washers and flat washers, force required to tighten the screws is 7~8kgf.cm(6.1~7.0inch-lb) 

- CN2:  PINGOOD JP-13T mates with KST: FDFNYD1-187 or other applicable connectors. 

- CN101 mates with Molex housing 1041421000 and Molex series 104539-8002 crimp terminals. 

|Control and STANDBY connector CN101|Control and STANDBY connector CN101|
|---|---|
|Pin 1|Remote sense +|
|Pin 2|Remote sense –|
|Pin 3|Power Good +|
|Pin 4|Power Good -(DC RTN)|
|Pin 5|Remote ON_OFF/INHIBIT +|
|Pin 6|Remote ON_OFF/INHIBIT -(DC<br>RTN)|
|Pin 7|5V Standby|
|Pin 8|DC RTN|
|Pin 9|5V Standby|
|Pin 10|DC RTN|



- System protective earth connection can be connected to the enclosed cover or to CN2. 

|**MDS-300ADB24 **|**MDS-300ADB24 **|
|---|---|
|AA|Delta Standard|
|AB|A mating connector with Molex housing 1041421000 and Molex terminals 1045398002, with jumper wire between<br>pins 5 and 6, will be inserted into CN101. This will allow the power supply to turn on, without user intervention, upon<br>the application of input AC voltage Due to presence of mating connector, external connections cannot be made to<br>pins 1-10 of CN101.|



All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

8 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## **Functions** 

## Start-up Time 

The time required for the output voltage to reach 90% of its final steady state value, after the input voltage is applied. 

## Rise Time 

The time required for the output voltage to change from 10% to 90% of its final steady state value. 

## Hold-up Time 

Time between the collapse of the AC input voltage, and the output falling to 90% of its steady state value. 

##  **Graph illustrating the Start-up Time, Rise Time, and Hold-up Time** 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

9 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## Dynamic Response (24 Volt Output) 

The power supply output voltage will remain within ±5% of its steady state value, when subjected to a dynamic load 50 to 100% of its rated current. 

##  **50 to 100% Load** 

## Overload & Over current Protections 

The power supply’s Overload (OLP) and Over current (OCP) Protections will be activated before the 24 volt outputs’ current exceeds 160% of IO (Max load). Upon such an occurrence, VO will start to drop. Once the power supply has reached its maximum power limit, the protection will be activated and the power supply will go into “Hiccup mode” (Auto-Recovery). The power supply will recover once the fault condition causing the OLP and OCP is removed and IO is back within the specified limit. For the standby output, the performance is the same, with the exception that the protection will be activated before the output current exceeds 1.06 amps. 

## Inrush Current 

Inrush current is the input current that occurs when the input voltage is first applied. For AC input voltages, the maximum peak value of inrush current will occur during the first half cycle of the applied AC voltage. This peak value decreases exponentially during subsequent cycles of AC voltage. 

Additionally, if the 24 Volts’ Iout is >100%; but <160% for a prolonged period of time (depending on the load), the Over Temperature Protection (OTP) will be activated due to high temperature on critical components. The power supply will then go into latch mode. 

## Short Circuit Protection 

The power supply’s output OLP/OCP function also provides protection against short circuits. When a short circuit is applied, the output current will operate in “Hiccup mode”, as shown in the illustration in the OLP/OCP section on this page. The power supply will return to normal operation after the short circuit is removed. 

## Overvoltage Protection 

The power supply’s overvoltage circuit will be activated when its internal feedback circuit fails. The output voltage shall not exceed its specifications defined on Page 5 under “Protections”. Power supply will latch off, and require removal/re-application of input AC voltage in order to restart. 

## Over Temperature Protection 

As mentioned above, the power supply also has Over Temperature Protection (OTP). This is activated when the overload condition persists for an extended duration and the output current is below the overload trigger point but >100% load. In the event of a higher operating temperature condition at 100% load, the power supply will run into OTP when the surrounding air temperature is higher than the operating temperature. When activated, the output voltage will go into latch mode until the input voltage is removed; then, reapplied, and the surrounding air temperature drops to its normal operating temperature. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

10 

**TECHNICAL DATASHEET** 

**Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## Power Good 

Power Good+ pin is an open collector transistor (40V/600mA rating). A resistor (suggested value 10Kohm, 1/8W) can be added between 5V STANDBY pin (or, other available pull-up voltage that is no greater than 30V) and the Power Good+ pin (refer to figure below). Value of pull-up resistor may have to be adjusted, depending on voltage used, and other end-use conditions of the Power Good+ pin connection to the product.  When AC input is on, Power Good+ pin will be high. When AC input is off, Power Good+ pin will be low. There will be a minimum of 5 milliseconds (at 210W load) between the time the power good goes to low level, and the time when the output reaches 90% of its rated value. 

## Remote On_Off/ INHIBIT 

Remote ON_OFF/ INHIBIT can be used to enable or disable only the main output. When the main output is disabled, the +5V Standby output will continue to operate. This signal can be pulled down to a low level of 0.3 volts, or shorted to DC-Return, in order for the main output to be enabled; and, floated (no connection to the signal), or pulled up to a value greater than or equal to 3 volts, in order to disable the main output. 

## Remote Sense 

Remote sense feature can be used to compensate for the extra voltage drop on output wires that are connected from the main output terminals, to the load. With wires connected from the remote sense pins, at the same locations as the wires from the main output, the remote sense function can compensate up to 500mV voltage drop. The power supply will not be damaged if the remote sense pins are shorted, or if a reverse/inverted polarity connection is made to the load. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

11 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Enclosed Power Supply** 24V 300W with 5V/0.5A Standby / MDS-300ADB24 

## **Certificate** 

All Delta Medical Power products conform to the European directive 2011/65/EU. RoHS is the abbreviation for “Restriction of the use of certain hazardous substances 

Delta has been certified as meeting the requirement of ISO 13485: 2003 and EN ISO 13485:2012 for the design and manufacture of switching power supply and adaptor for medical device. 

In addition to a UL Total Certification Program (TCP) approved client laboratory for IEC60950 and IEC60065. Delta also has participated UL Client Test Data Program (CDTP) for IEC 60601 

## **Attention** 

Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information for using the product. In the event of any discrepancy between the information in the catalog and datasheets, the datasheets shall prevail (please refer to www.DeltaPSU.com for the latest datasheets information). Delta shall have no liability of indemnification for any claim or action arising from any error for the provided information in the datasheets. Customer shall take its responsibility for evaluation of using the product before placing an order with Delta. 

Delta reserves the right to make changes to the information described in the datasheets without notice. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (June 2019, Rev. 06)** 

12 



## Links

- [View this product on Novapart](https://novapart.co/products/MDS-300ADB24%20AA/power-supply-ac-dc-24v-875a)
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- [Supplier page](https://es.farnell.com/delta-electronics-power/mds-300adb24-aa/power-supply-ac-dc-24v-8-75a/dp/3595758)
---

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