Custom Power Supplies
Custom Industrial Power Supplies


75 Watt, Single Output Military Grade DC to DC Converter


Product Description

This unit is a 75 watt, single output, military grade dc to dc converter designed for electronic systems operating in harsh environments (subject to abnormal shock and vibration) and extreme temperature conditions.  It is conduction cooled providing a -55° to +85° C operating temperature range. This highly reliable design will meet or exceed all applicable military standards including MIL-STD-810F & MIL-STD-461F.

Product Features

  • Meets MIL-STD-704A/704D
  • Meets MIL-STD-1275A
  • Meets MIL-STD-461F
  • Meets MIL-STD-810F
  • Wide Range Input: 18-36Vdc
  • Operating Temperature Range: -55º to +85º C
DC Input
  • Voltage Input Range: 28VDC (18-36Vdc input range)

Output Selection Guide

Model #: Voltage Max Current Regulation Ripple

MGDC75-3.3

3.3Vdc

77.3 Amps

±3%

50mV pk-pk

MGDC75-5.0

5.0Vdc

54.0 Amps

±3%

50mV pk-pk

MGDC75-9.0

9.0Vdc

31.6 Amps

±1%

120mV pk-pk

MGDC75-12

12Vdc

25.0 Amps

±1%

120mV pk-pk

MGDC75-15

15Vdc

20.0 Amps

±1%

150mV pk-pk

MGDC75-19

19Vdc

15.8 Amps

±1%

150mV pk-pk

MGDC75-24

24Vdc

12.5 Amps

±1%

240mV pk-pk

MGDC75-28

28Vdc

10.7 Amps

±1%

240mV pk-pk

MGDC75-36

36Vdc

8.3 Amps

±1%

240mV pk-pk

MGDC75-48

48Vdc

6.2 Amps

±1%

240mV pk-pk

Note: Alternate output voltages are available, consult factory for availability.

DC Output Characteristics (Floating)

  • Output Power: 300 Watts (maximum continuous power, may require derating for some low voltage outputs)
  • Line Regulation: ±1.0% Typical
  • Load Regulation: ±2.0% Typical (No load to full load; nominal input)
  • Output Ripple/Noise: 1% Typical (pk-pk; nominal input; full load; 20MHz bandwidth)
  • Set Point Accuracy: ± 1.0% of Output Voltage (Nominal input; full load; 25°C)
  • Transient Response: Output voltage returns to within 1% in less than 2.5mS for a 50% load change and the peak transient does not excess 5%.
  • Overshoot: Turn-on and turn-off overshoot should not exceed 5% over nominal voltage.

Electrical Characteristics

  • Switching Frequency: 300KHz Fixed
  • Efficiency: 88% Typical (Measuring at 28Vdc and at full load)
  • Isolation Voltage: 500V between input and output. 500V between input and case.
  • Temperature Regulation: +/-2.0%/ºC (+/-.005%/ ºC max; over operating temp range)

Protection

  • Over Current Limit: ~115 to 120% of maximum rating. Hiccup, continuous.
  • Over-Voltage Setpoint: ~115% of nominal main. Unit latched 1 minute, recycle AC input to reset at 25°C.
  • Short Circuit: Auto-Recovery after short circuit condition is removed.
  • Over temperature Protection: Shutdown at baseplate temperature of +100°C (±5%) Automatic recovery at baseplate temperature lower than +95°C (±5°C)  
Environmental
  • Operating Temperature: -55º to +85º C (baseplate)
  • Storage Temperature: -55º to 125º C
  • Operating Humidity: 5% to 90% RH, Non-condensing
  • Storage Humidity: 5% to 95% RH, Non-condensing
  • Operating Altitude: Sea-level to 40,000 ft. in pressurized environment
  • Sock & Vibration Standards: MIL-STD-810F
  • Conducted EMI: MIL-STD-461F  
  • Cooling: Conduction cooled, coldplate required. Optional heatsink available.

Reliability

  • 250,000 hours, calculated per MIL-STD-217F at +55°C baseplate, ground fixed.

Mechanical

  • Outline Dimensions: ~1.2" X 2.5" X 4.0" (H X W X L) – not including I/O connector  
  • Weight: ~1.2 lbs (265 grams)
  • DC Input & Output Connector: D-Sub or equiv.

Additional Features, Controls or Alarms

  • Remote External Synchronization Capability In/Out
  • TTL Logic Enable
  • Remote Sense
  • Parallel Operation

Notes

  • Some specifications have not been tested for actual compliance and can not be guaranteed to meet 100% compliance during system testing.
  • Product specifications subject to change without notice. All rights reserved.
  • The information and specifications contained in this document are believed to be correct and accurate at the time of publication. DSC Power Solutions, Inc. accepts no responsibility for consequences arising from printing errors or inaccuracies pertaining to any use or application of this document.



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