A zero voltage switching flyback converter topology

Author

Xi, Youhao ; Jain, Praveen K. ; Joós, Géza

Author_Institution

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

Volume

2

fYear

1997

fDate

22-27 Jun 1997

Firstpage

951

Abstract

A zero voltage switching flyback power converter topology employing an auxiliary circuit is presented in this paper. The proposed power converter has lossless switching (whatever the line and load conditions), few components and can be operated either in voltage or current mode control. A detailed analysis of the circuit is presented and the design procedure is illustrated. A 50 W 200 kHz prototype zero voltage switching flyback power converter is built which shows an efficiency improvement of approximately 7% as compared to a conventional hard switching flyback power converter

Keywords

DC-DC power convertors; network topology; switching circuits; 200 kHz; 50 W; auxiliary circuit; circuit design procedure; current mode control; efficiency improvement; flyback power converter topology; lossless switching; soft switching; voltage mode control; zero voltage switching; Circuit analysis; Circuit topology; Frequency; Power supplies; Switches; Switching circuits; Switching converters; Voltage control; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE

Conference_Location

St. Louis, MO

ISSN

0275-9306

Print_ISBN

0-7803-3840-5

Type

conf

DOI

10.1109/PESC.1997.616838

Filename

616838