An improved zero voltage switching flyback converter topology

Author

Xi, Yan ; Jain, Praveen K. ; Joos, Geza ; Fei Liu, Yan

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

2

fYear

1998

fDate

17-22 May 1998

Firstpage

923

Abstract

An improved zero voltage switching flyback converter topology is presented in this paper. This converter employs an auxiliary circuit that provides ZVS for both the main and auxiliary and it permits the operation of the converter at very high frequencies. Operating principle, steady state analysis, and design procedure for the auxiliary circuit of the proposed converter, are given. A 50 W, 260 kHz prototype converter is built to verify the performance. Experiments of the proposed converter show an improvement of about 2% in the overall efficiency as compared to the previous ZVS flyback converter

Keywords

DC-DC power convertors; switching circuits; 260 kHz; 50 W; ZVS flyback converter; auxiliary circuit; converter operation; design procedure; flyback converter topology; operating principle; steady state analysis; very high frequencies; zero voltage switching; Capacitors; Circuit topology; Diodes; Performance analysis; Resonance; Steady-state; Switches; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.703113

Filename

703113