A ZVS DC-DC converter using non-dissipative snubber circuit

Author

Sun, Tiecheng ; Guo, Jianhui ; Li, Rui ; Fu, Lei ; Liang, Lian

Author_Institution

Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol., Harbin

fYear

2008

fDate

3-5 Sept. 2008

Firstpage

1

Lastpage

4

Abstract

Based on the characteristics of conventional full-bridge phase-shift PWM ZVS (zero-voltage-switching) DC-DC converter, a novel full-bridge phase-shift PWM ZVS DC-DC converter using non-dissipative snubber circuit is proposed. The converter can achieve ZVS for all switches effectively. The principle and operation modes of the converter are analyzed in detail, and the necessary condition of soft switching is also analyzed. The digital control system of the converter is designed base on TMS32OF2812 DSP. The proposed theory has been verified on a 24V/2A, 100 kHz experimental converter. The soft switching of leading and lagging legs can be achieved in wide load rang.

Keywords

DC-DC power convertors; PWM power convertors; control system synthesis; digital control; snubbers; switching convertors; zero voltage switching; TMS32OF2812 DSP; ZVS DC-DC converter; current 2 A; digital control system design; frequency 100 kHz; full-bridge phase-shift PWM converter; non-dissipative snubber circuit; voltage 24 V; zero-voltage-switching; Circuits; DC-DC power converters; Digital control; Digital signal processing; Pulse width modulation; Pulse width modulation converters; Snubbers; Switches; Switching converters; Zero voltage switching; Full-bridge converter; Non-dissipative snubber circuit; Zero-voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference, 2008. VPPC '08. IEEE

Conference_Location

Harbin

Print_ISBN

978-1-4244-1848-0

Electronic_ISBN

978-1-4244-1849-7

Type

conf

DOI

10.1109/VPPC.2008.4677770

Filename

4677770