A modified asymmetrical pulse-width-Modulated resonant DC/DC converter topology

Author

Mangat, Simmi ; Qiu, Mei ; Jain, Praveen

Author_Institution

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

Volume

19

Issue

1

fYear

2004

Firstpage

104

Lastpage

111

Abstract

A modified asymmetrical pulse-width-modulated resonant dc/dc converter employing an auxiliary circuit will be proposed in this paper. The auxiliary circuit consists of a network of two capacitors and an inductor. The aim of this network is to produce zero-voltage-switching (ZVS) over a wide input voltage range, while reducing the voltage stress on the resonant component. A detailed analysis and performance characteristics are presented. Experimental results for a 5 V, 35 W converter show an efficiency of 83% at a constant operating frequency of 500 kHz. Using metal oxide semiconductor field effect transistors (MOSFETs) as synchronous rectifiers can further reduce power losses and improve the efficiency to be greater than 90%.

Keywords

DC-DC power convertors; MOSFET; PWM power convertors; network topology; rectifiers; resonant power convertors; 35 W; 5 V; 500 kHz; 83 percent; MOSFET; auxiliary circuit; metal oxide semiconductor field effect transistor; pulse-width-modulated dc-dc converter; resonant dc-dc converter; synchronous rectifier; zero-voltage-switching; Capacitors; Circuit topology; DC-DC power converters; Inductors; Network topology; Pulse circuits; RLC circuits; Resonance; Stress; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2003.820602

Filename

1262058