A zero voltage switching forward converter topology

Author

Xi, Y. ; Jain, P.K. ; Joos, G. ; Jin, H.

Author_Institution

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

fYear

1997

fDate

19-23 Oct 1997

Firstpage

116

Lastpage

123

Abstract

A zero voltage switching forward converter topology is presented in this paper. The topology employs an auxiliary circuit. Only a few small rating components and devices are added. The merits of the proposed topology include: lossless switching independent of the input and load conditions, simple control and power circuitry, and ability to operate in either voltage or current mode control. A steady state analysis is presented and the design procedure is illustrated. A 100 W 300 kHz prototype zero voltage switching forward converter is built which shows an efficiency improvement of approximately 5% as compared to a conventional hard switching forward converter

Keywords

electric current control; power convertors; switching circuits; voltage control; 100 W; 300 kHz; ZVS; auxiliary circuit; computer power supplies; current mode control; design procedure; efficiency improvement; hard switching forward converter; lossless switching; simple control circuitry; simple power circuitry; steady state analysis; telecommunication power supplies; voltage mode control; zero voltage switching forward converter topology; Circuit topology; Frequency; Inductors; Power supplies; Switches; Switching circuits; Switching converters; Voltage control; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1997. INTELEC 97., 19th International

Conference_Location

Melbourne, Vic.

Print_ISBN

0-7803-3996-7

Type

conf

DOI

10.1109/INTLEC.1997.645875

Filename

645875