A new family of isolated converters that uses the magnetizing inductance of the transformer to achieve zero-voltage switching

Author

Farrington, R. ; Jovanovic, Milan ; Lee, Fred C.

Author_Institution

AT&T Bell Labs., Mesquite, TX, USA

Volume

8

Issue

4

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

535

Lastpage

545

Abstract

A new family of isolated, zero voltage switched power converters which utilizes the magnetizing inductance of the transformer to achieve zero voltage turn-on of the primary switches is proposed. By employing saturable inductor(s) on the secondary side, soft turn-off of the output rectifier(s) is obtained with a minimum circulating energy flowing through the power converter. The proposed converters can operate either with a variable or a constant switching frequency. A complete DC analysis and design guidelines for the half-bridge topology are described, and the performance of a 100 W experimental power converter is presented

Keywords

bridge circuits; power convertors; power transformers; rectifying circuits; switching circuits; 100 W; DC analysis; circulating energy; design guidelines; half-bridge topology; isolation; magnetizing inductance; output rectifier; performance; power converters; primary switches; saturable inductor; soft turn-off; switching frequency; transformer; turn-on; zero voltage switching; Circuit topology; Inductance; Inductors; Magnetic resonance; Power electronics; Power transformers; Pulse width modulation; Rectifiers; Switches; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.261025

Filename

261025