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500 Watt Military DC/DC Power Supply, Cooled Base Plate   600 Watts Military Grade 5 Output VME Power Supply   
440 Watts Radar Power Supply System

600 Watts Military Grade 5 Output VME Power Supply


1 • Scope
This preliminary specification outlines the electrical and mechanical characteristics for a 594 watt, five output, MIL-STD, ac to dc  power supply designed for single phase, 400Hz input power to operate under harsh environmental conditions for Military Naval  applications.

2 • Input
2.1 Input Voltage Range: 85 – 264VAC (100-220Vac nominal input)
2.2 Frequency Range: 40/50/400Hz (47-440Hz)
2.3 Phase: Single phase, 2 wire plus ground
2.4: Typical Input Current: > 30A / 115Vac input, full output
2.5: Power Factor Correction: 0.95 min @ nominal input and full Load
2.6: Input Transient Protection: MIL-STD 704A/D (80Vdc for 100mSec)
2.7: Voltage Surge Protection: MIL-STD 1275A/D (200Vdc for 50mSec)

3 • DC Output Characteristics
3.1 Output Power: 594W
3.2 Output Voltage: 5V dc, 12V dc, 12V dc, 5V dc, 6V dc
3.3 Output Current: 5V @ 32A, +12V @ 26A, -12V @ 7A, -5V @ 4A, 6V @ 3A
3.4 Line Regulation: ±1.0% Typical
3.5 Load Regulation: ±1.0% Typical (No load to full load, nominal input)

    1. Output Ripple: 1% Typical (pk-pk, nominal input, full load, 20MHz bandwidth)

3.7 Set Point Accuracy: ± 1.0% of Output Voltage (Nominal input; full load; 25°C)
3.8 Transient Response: Output voltage returns to within nominal output voltage with in 1500uSecs for a 50 to 75% load change.
3.9 Overshoot: Turn-on and turn-off overshoot should not exceed 5% over nominal voltage.
3.9.1 Hold-Up: 20 m/Sec

4 • Electrical Characteristics
4.1 Switching Frequency: 360KHz Fixed
4.2 Efficiency: 85% Typical (Measuring at 115Vac input and full load)
4.2 Turn On Delay: 250 to 500mS (To nominal output voltage)
4.3 Isolation Voltage:
Input to Output: 2000Vrms
Input to Chassis: 1000Vrms
Output to Chassis: 1000Vrms
4.4 Isolation Resistance: 100Mohms (Input to output)
4.5 Temperature Regulation: ±2.0%/ºC (±.005%/ ºC max; over operating temp range)

5 • Protection
5.2 Over Current Limit: 115 to 130% Auto-Recovery after removal of overload condition.
5.5 Over Voltage Protection: 108 to 125% of nominal output voltage. Unit latched, recycle AC input to reset.
5.3 Short Circuit: Auto-Recovery after short circuit condition is removed.
5.4 Over Temperature Protection: The power supply is protected for over temperature conditions with thermal shutdown at 90° C base plate. Auto-Recovery when temperature returns to normal.

6 • Environmental
6.1 Operating Temperature: -40º to 80º C (MIL-STD-810 Method 501 and 502 Pro. II)
6.2 Storage Temperature: -55º to 100º C
6.3 Operating Humidity: MIL-STD-810 Method 507
6.4 Storage Humidity: 5% to 95% RH, Non-condensing
6.5 Operating Altitude: Sea-level to 40,000ft. Non-Operating: above 40,000ft.
6.6 Shock & Vibration:  MIL-STD-167-1 and MIL-STD-901
6.7 Conducted EMI: MIL-STD-461D, CE101, CE102, RS101, RS102, RS103
6.8 Fungus: MIL-STD-810 Method 508.5
6.9 Salt Fog: MIL-STD-810 Method 509.3
6.10 MIL-STD-1399 Method 300

7 • Cooling
7.1 Conduction Cooling: Baseplate temperature not to exceed 85°C to maintain full rated output. Forced Air over the heat sink is recommended.

8 • Controls/Signals/Alarms
8.1 Remote On/Off: Using a Discrete Signal (TBD)
8.2 DC Good: Using a Discrete Signal for each voltage.

9 • Mechanical
9.1 Outline Dimensions: 6.96” x 9.54” x 2.0” (W x L x H) excluding connectors,
9.2 Enclosure:  Metal Chassis, Aluminum baseplate and enclosure,
9.3 Weight:  5 lbs. /2268.0 grams (Estimate)
9.4 AC Input and DC Output Connector: TBD

10 • Image

600 Watts Military Grade 5 Output VME Power Supply

11 • Notes
11.1 Product specifications subject to change without notice. All rights reserved
11.2 The information and specifications contained in this document are preliminary specifications for a proposed 594 watt, 400Hz, Single Phase, power supply product

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