A new ZVS phase-shifted PWM DC/DC converter with push-pull type synchronous rectifier

Author

Zhang, Yingqi ; Sen, P.C.

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Canada

Volume

1

fYear

2003

fDate

4-7 May 2003

Firstpage

395

Abstract

A new ZVS phase-shifted PWM DC/DC converter with push-pull type synchronous rectifier is proposed. One half-bridge DC/AC inverter is cascaded with a push-pull type synchronous rectifier through an inductive link and a transformer. There is no inductor at the rectifier stage. In this converter, switching of the inverter is phase-shifted with respect to the synchronous rectifier. All switches have ZVS conditions. Constant switching frequency operation is achieved and all gate signals are 50% in duty cycle. The principles of operation of the converter are analyzed in detail. A prototype for 12 V/4 A operated at 200 kHz has been built. Experimental results are presented and they verify the analysis.

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; rectifiers; switching convertors; 12 V; 4 A; ZVS DC/DC converter; duty cycle; inductive link; one half-bridge DC/AC inverter; phase-shifted PWM; push-pull type synchronous rectifier; switching frequency operation; transformer; DC-DC power converters; Inductors; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7781-8

Type

conf

DOI

10.1109/CCECE.2003.1226424

Filename

1226424