A new ZVS-PWM full-bridge step-up/down converter

Author

Wang, Chien-Ming ; Wang, Yen-Nien ; Yang, Chia-Hao

Author_Institution

Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan

Volume

1

fYear

2004

fDate

2-6 Nov. 2004

Firstpage

908

Abstract

A novel zero-voltage-switching pulse-width-modulation (ZVS-PWM) full-bridge transformer-isolated step-up/down converter is proposed in this paper. The output voltage of the proposed converter can be larger or lower than the DC input voltage, depending on the instantaneous duty-cycle. This property is not found in the classical full-bridge transformer-isolated converter. Furthermore, in the proposed converter, besides operating at constant frequency, all semiconductor devices operate at soft-switching without additional voltage stress and current stress. An average approach is employed to analyze the system. A design example of 1000 W ZVS-PWM full-bridge converter is examined to assess the converter performance.

Keywords

DC-DC power convertors; PWM invertors; power semiconductor devices; switching convertors; zero voltage switching; 1000 W; DC input voltage; ZVS-PWM converter; constant frequency; full-bridge transformer-isolated step-up/down converter; instantaneous duty-cycle; semiconductor devices; zero-voltage-switching pulse-width-modulation converter; DC-DC power converters; Electromagnetic interference; Pulse width modulation; Pulse width modulation converters; Semiconductor devices; Stress; Switches; Switching circuits; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE

Print_ISBN

0-7803-8730-9

Type

conf

DOI

10.1109/IECON.2004.1433436

Filename

1433436