Design and Implementation of an Accurately Regulated Multiple Output ZVS DC–DC Converter

Author

Zhang, Yanjun ; Xu, Dehong

Author_Institution

Zhejiang Univ., Hangzhou

Volume

22

Issue

5

fYear

2007

Firstpage

1731

Lastpage

1742

Abstract

An accurately regulated multiple-output zero-voltage switching (ZVS) DC-DC converter is proposed. The converter is composed of three outputs altogether. The first and second outputs are regulated through the duty cycle control of two asymmetrical half bridge converters, while the third output is regulated through the phase shift of the two asymmetrical half bridge converters. The characteristic of this multiple-output dc-dc converter is analyzed and design process is investigated. ZVS is realized for all the main switches. Therefore this multiple-output dc-dc converter can operate with higher efficiency at higher switching frequency. The operation stages, ZVS condition and control detail are also presented. A 400 V input, 48 V/10 A, 5 V/20 A, 12 V/5 A outputs prototype is built to verify the design. The efficiency at rated input voltage full load is 93.36%.

Keywords

DC-DC power convertors; voltage control; zero voltage switching; accurately regulated multiple output ZVS DC-DC converter; asymmetrical half bridge converters; current 10 A; current 20 A; current 5 A; duty cycle control; phase shift; voltage 12 V; voltage 400 V; voltage 48 V; voltage 5 V; voltage regulator; zero-voltage switching DC-DC converter; Bridge circuits; Magnetic variables control; Process design; Pulse width modulation; Pulse width modulation converters; Regulators; Switches; Switching converters; Voltage control; Zero voltage switching; Accurately regulated; ZVS; multiple-output dc–dc converter;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2007.904206

Filename

4300913