Current-Fed Dual-Bridge DC–DC Converter

Author

Song, Wei ; Lehman, Brad

Author_Institution

Dept. of Electr. & Comput. Eng., Boston Univ., MA

Volume

22

Issue

2

fYear

2007

fDate

3/1/2007 12:00:00 AM

Firstpage

461

Lastpage

469

Abstract

A new isolated current-fed pulsewidth modulation dc-dc converter-current-fed dual-bridge dc-dc converter-with small inductance and no deadtime operation is presented and analyzed. The new topology has more than 3times smaller inductance than that of current-fed full-bridge converter, thus having faster transient response speed. Other characteristics include simple self-driven synchronous rectification, simple housekeeping power supply, and smaller output filter capacitance. Detailed analysis shows the proposed converter can have either lower voltage stress on all primary side power switches or soft switching properties when different driving schemes are applied. A 48-V/125-W prototype dc-dc converter with dual output has been tested for the verification of the principles. Both simulations and experiments verify the feasibility and advantages of the new topology

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; capacitance; inductance; rectification; switching convertors; transient response; 125 W; 48 V; current-fed dual-bridge dc-dc converter; output filter capacitance; power switches; pulsewidth modulation dc-dc converter; self-driven synchronous rectification; simple housekeeping power supply; transient response; Capacitance; DC-DC power converters; Filters; Inductance; Power supplies; Pulse modulation; Pulse width modulation converters; Pulsed power supplies; Topology; Transient response; Current-fed; dc–dc converter; deadtime; dual-bridge; full-bridge; zero voltage switching (ZVS);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2006.889927

Filename

4118332