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

Volume

2

fYear

2000

fDate

2000

Firstpage

1053

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual

Conference_Location

Galway

ISSN

0275-9306

Print_ISBN

0-7803-5692-6

Type

conf

DOI

10.1109/PESC.2000.879958

Filename

879958