Single-Switch Quasi-Resonant Converter

Author

Kwon, Jung-Min ; Choi, Woo-Young ; Kwon, Bong-Hwan

Author_Institution

Dept. of Electron. & Electr. Eng., Pohang Univ. of Sci. & Technol., Pohang

Volume

56

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

1158

Lastpage

1163

Abstract

A single-switch quasi-resonant converter is proposed to obtain high efficiency. Using a variable switching frequency control, this converter is continuously operated at the critical conduction mode for soft switching of the power semiconductor switch. By the resonance, the proposed converter reduces the turn-on loss of the switch without additional active switches and alleviates the reverse-recovery losses of the rectifying diodes. Furthermore, the voltage stress of the rectifying diodes due to the output series resonant circuit is clamped to the output voltage. Experimental results for the 48-V/160-W converter at the variable switching frequency are obtained to show the performance of the proposed converter.

Keywords

frequency control; power semiconductor diodes; power semiconductor switches; resonant power convertors; switching convertors; critical conduction mode; power 160 W; power semiconductor switch; rectifying diode; reverse-recovery loss; single-switch quasiresonant converter; variable switching frequency control; voltage 48 V; Quasi-resonant converter; soft switching;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2008.2006239

Filename

4663110