Regulated DC-DC Power Converter | 28/14VDC, 280W

The RG28 converts 28 VDC input voltage to a regulated 14 VDC output voltage.

The 14 VDC output is buck converted from the input voltage and therefore the output voltage is not isolated from the input.

A state of the art “”Synchronous Current Mode Switching”” topology with Surface Mount Technology (SMT) is used to realize the power conversion. Control circuitry includes use of a popular Synchronous PWM controller for voltage regulation and overload current limit.

Features

• Converts 28 VDC to 14 VDC
• 280 W continuously at 14 VDC (20 amperes output)
• Synchronous current mode switching
• Surface mount technology
• Output short circuit current limit protection
• Output shuts down when the voltage feedback loop is opened
• TSO’d

Specifications

Weight:
1.2 lb

Dimensions:
2.75 x 6.875 x 2.24 in.

Input Voltage:
28 Vdc NOM., 22 to 32 Vdc

Input Current:
10.8 Amps typ at 28 Vdc input & @FL
0.3 Amps maximum at no load

Output Voltage:
14 Vdc regulated

Output Current:
0-20 Amps continuous

Power Output:
280 Watts continuous
420 Watts for a minimum of 5 minutes

Regulation:
1% for line, 1% for load and 1% for temperature

Overload (OL):
Deliver 110% output power for 2 hours minimum.

Protection (OL): 
Withstands without damage or degradation loads exceeding 110% to an output short circuit. Unit delivers rated output power upon removal of the overload condition

Protection (SC):
Under a output short circuit condition, the current is limited to approximately 37.5 Amps

Efficiency:
92% typical

Temperature:
-55° C to +71° C

Cooling: 
Convection and thermal conduction through the bottom plate (No internal fan)

Altitude:
55,000FT

Compliance:
FAA TSO-C71

Environmental:
DO-160D/C by test, design similarity and/or design analysis per:
F2-BBB[STX]EWXDFSABAZZXLXXXX

Finish:
Gold iridite per MIL-C-5541 Class 1A