150W Dual Output MIL-SPEC Power Supply
1 • Scope
This preliminary specification outlines the electrical and mechanical characteristics for a 150 watt, dual output, military grade, dual input (AC or DC) power supply designed to operate from a single phase, 400Hz, 115VAC input power source or a 28VDC voltage source for airborne applications that require the power supply to function under harsh environmental conditions.
2.0 AC Input
2.1 Input Voltage Range: 95 – 138VAC (115Vac nominal input)
2.2 Frequency Range: 50/60/400Hz (47-440Hz)
2.3 Phase: Single phase, 2 wire plus ground
2.4 Typical Input Current: 1.5A at 115Vac input, full output
2.5 Power Factor Correction: 0.98 typical @ 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 (100Vdc for 50mSec)
3.0 DC Input
3.1 Input Voltage Range: 18-36Vdc (Nominal Voltage: 28Vdc)
3.2 Typical Input Current: 6.5A at 28Vdc input, full output
3.3 Input Ripple: 15% Input Current at Full Load
3.4 Input Electrical Power: MIL-STD-704A/D (Transient compliance: 50Vdc for 0.1 sec.)
3.5 Input Surge Protection: MIL-STD-1275A/D (100Vdc for 50mSec)
4 • DC Output Characteristics
4.1 Output Power: 150W
4.2 Output Voltage: 5Vdc & 24Vdc
4.3 Output Current: 6A for 5V & 5A for 24Vdc (max continuous at nominal input)
4.4 Line Regulation: ±1.0% Typical
4.5 Load Regulation: ±1.0% Typical (No load to full load, nominal input)
4.6 Output Ripple: 1% Typical (pk-pk, nominal input, full load, 20MHz bandwidth)
4.7 Set Point Accuracy: ± 1.0% of Output Voltage (Nominal input; full load; 25°C)
4.8 Transient Response: Output voltage returns to within nominal output voltage with in 1500uSecs for a 50 to 75% load change.
4.9 Overshoot: Turn-on/turn-off overshoot should not exceed 5% over nominal voltage.
5.0 Electrical Characteristics
5.1 Switching Frequency: 360KHz Fixed
5.2 Efficiency: 87% Typical (Measuring at 115Vac input and full load)
5.2 Turn On Delay: 250 to 500mS (To nominal output voltage)
5.3 Isolation Voltage:
Input to Output: 2000Vrms
Input to Chassis: 1000Vrms
Output to Chassis: 1000Vrms
5.4 Isolation Resistance: 100Mohms (Input to output)
5.5 Temperature Regulation: ±2.0%/ºC (±.005%/ ºC max; over operating temp range)
5.6 Hold-up Time: 200mSecs
6.0 Protection
6.1 Over Current Limit: 115 to 130% Auto-Recovery after removal of overload condition.
6.2 Over Voltage Protection: 108 to 125% of nominal output voltage. Unit latched, recycle AC input to reset.
6.3 Short Circuit: Auto-Recovery after short circuit condition is removed.
6.4 Over Temperature Protection: The power supply is protected for over temperature conditions with thermal shutdown. Auto-Recovery when temperature returns to normal.
7.0 Environmental
7.1 Operating Temperature: -40º to 85º C (Baseplate temperature)
7.2 Storage Temperature: -50º to 100º C
7.3 Operating Humidity: 5% to 90% RH, Non-condensing
7.4 Storage Humidity: 5% to 95% RH, Non-condensing
7.5 Operating Altitude: Sea-level to 10,000ft. Non-Operating: above 10,000ft.
7.6 Shock & Vibration: MIL-STD-810F
7.7 Conducted EMI: MI-STD-461C/E/F
8.0 Cooling
8.1 Conduction Cooling: Baseplate temperature not to exceed 85°C for full rated output.
9.0 Controls/Signals/Alarms
9.1 Remote On/Off: TBD
9.2 Remote Sense: N/A
9.3 Output Voltage Adjust Control: N/A
10.0 Mechanical
10.1 Outline Dimensions: 6.0" x 10.0" x 1.5" (W x L x H) excluding connectors, no heatsink.
10.2 Enclosure: Metal chassis, aluminum baseplate and enclosure, non-finish
10.3 Weight: 3 lbs/1360 grams (Estimate)
10.4 AC Input Connector: Glenair 805-003-07-MT-12-4SA or TBD
10.5 DC Output Connector: Glenair 805-003-07-MT-12-4SA or TBD
11.0 Image 
12.0 Notes
12.1 Product specifications subject to change without notice. All rights reserved
12.2 The information and specifications contained in this document are preliminary specifications for a proposed airborne power supply product.
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