Title :
Quasi-square-wave rectification for front-end DC/DC converters
Author :
Wong, Pit-Leong ; Yang, Bo ; Xu, Peng ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
In the front-end DC/DC converters, the secondary rectification contributes an important part of loss. This paper investigates using synchronous rectified working in quasi-square-wave (QSW) mode to reduce both the conduction and reverse recovery loss in the secondary side. QSW can also help the soft-switching of the primary switches. A 1 kW half-bridge converter is built to verify this idea. Efficiency higher than 95% can be achieved for most of the load range for 100 kHz operation
Keywords :
DC-DC power convertors; bridge circuits; rectification; switching circuits; 1 kW; 100 kHz; 96 percent; conduction reduction; efficiency; front-end DC/DC converters; half-bridge converter; primary switches; quasi-square-wave rectification; reverse recovery loss; secondary rectification; soft-switching; DC-DC power converters; Diodes; Distributed computing; MOSFET circuits; Power factor correction; Rectifiers; Switches; Switching loss; Topology; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.879958
