Title :
Low temperature performance of a full-bridge DC-DC converter
Author :
Ray, Biswajit ; Gerber, Scott S. ; Patterson, Richard L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Puerto Rico Univ., Mayaguez, Puerto Rico
Abstract :
The low temperature (25°C to -175°C) performance of a 120 W, 100 kHz, 42/12 V phase-shifted zero-voltage-switched full-bridge DC-DC power converter designed with commercially available components is reported. Its efficiency increased from 80.8% at 25°C to 81.8% at -175°C. The power MOSFET and filter inductor loss decreased whereas the diode rectifier loss increased with decreasing temperatures. Low temperature operation of the open-loop control circuit based on CMOS and BiCMOS ICs is also discussed. The switching frequency of the converter increased with decreasing temperatures with maximum deviation of less than 4% compared to the room temperature operation. The converter successfully restarted at low temperatures without any visible degradation
Keywords :
BiCMOS integrated circuits; CMOS integrated circuits; DC-DC power convertors; bridge circuits; filters; losses; power MOSFET; semiconductor diodes; switching circuits; 100 kHz; 12 V; 120 W; 25 to -175 C; 42 V; 80.8 to 81.8 percent; BiCMOS IC; CMOS IC; ZVS; diode rectifier loss; filter inductor loss; full-bridge DC-DC converter; low temperature performance; open-loop control circuit; phase-shifted; power MOSFET loss; switching frequency; zero-voltage-switched; BiCMOS integrated circuits; DC-DC power converters; Diodes; Inductors; MOSFET circuits; Open loop systems; Power MOSFET; Power filters; Rectifiers; Temperature control;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.552943
