The RG28B power converter converts a 28 VDC input to a regulated 19 VDC output voltage. This converter is capable of delivering 280 continuous watts at 14 VDC (20A output). 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 art “synchronous current mode switching” topology with surface mount technology facilitates the power conversion process. Control circuit with a synchronous PWM controller provides for voltage regulation and current limit. Circuit protection includes an output short circuit current limit and shuts down when the voltage feedback loop is opened.

Features

• Converts 28 VDC input to regulated 19 VDC output
• Delivers 280 continuous watts at 14 VDC
• Convection cooled via thermal conductor plate
• Power conversion uses “synchronous mode switching” topography with surface mount technology
• Provides circuit overload protection and short circuit protection

Specifications

Weight:
1.2 lb

Dimensions:
2.75 x 6.875 x 2.24 in

Input Voltage:
28 VDC — 32 VDC, nominal

Input Current:
10.8 Amps @ 28 VDC, full load
0.3 Amps @  no load, no load

Output Voltage:
14 VDC, regulated

Output Current:
0 — 20 amps, continuous

Power Output:
280 watts, continuous
420 watts, for 5 min. (min.)

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

Overload:
delivers 110% output power for 2 hours minimum

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

Short Circuit Protection:
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:
55,000 ft

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