A Study of Soft-Switching PWM DC/DC Converter for Efficiency Improvement

Author

Tamura, Kenichi ; Kisaichi, Hiroyasu ; Nagai, Satoshi

Author_Institution

Mitsubishi Electr. Corp.

fYear

2005

Firstpage

490

Lastpage

491

Abstract

This paper proposes a new soft-switching PWM DC/DC converter with an auxiliary switch to save the power loss and improve the efficiency of a power supply. The circuit consists of a conventional voltage step up chopper converter and a developed resonant circuit. Due to the additional resonant circuit, the semiconductor device in the circuit is capable of operating with zero current and regulating duty ratio at constant frequency. The proposed converter improves the efficiency 0.5% and reduces the power loss by 16 W under nominal condition. Furthermore, the new converter using PWM scheme is capable of maintaining the high efficiency over a wide range of input voltage

Keywords

DC-DC power convertors; PWM power convertors; choppers (circuits); energy conservation; losses; switching convertors; auxiliary switch; energy saving; power loss; power supply efficiency; resonant circuit; semiconductor device; soft-switching PWM DC-DC converter; voltage step up chopper converter; Choppers; DC-DC power converters; Frequency; Power semiconductor switches; Power supplies; Pulse width modulation; Pulse width modulation converters; RLC circuits; Semiconductor devices; Voltage; Soft Switching; energy saving; high efficiency; power supply; resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmentally Conscious Design and Inverse Manufacturing, 2005. Eco Design 2005. Fourth International Symposium on

Conference_Location

Tokyo

Print_ISBN

1-4244-0081-3

Type

conf

DOI

10.1109/ECODIM.2005.1619274

Filename

1619274