A novel soft-switched synchronous buck converter

Author

Rahimi, Khalil ; Motlagh, Ali Nazeran ; Pakdel, Majid

Author_Institution

Naghshejahan Higher Educ. Inst., Isfahan, Iran

fYear

2009

fDate

7-10 Sept. 2009

Firstpage

1345

Lastpage

1351

Abstract

This paper proposes a zero-voltage-transition (ZVT) pulse-width-modulated (PWM) synchronous buck converter, which is designed to operate at low voltage and high efficiency typically required for portable systems. A new passive auxiliary circuit that allows the main switch to operate with zero-voltage switching has been incorporated in the conventional PWM synchronous buck converter. The operation principles and a detailed steady-state analysis of the ZVT-PWM synchronous converter implemented with the auxiliary circuit are presented. Besides, the main switch and all of the semiconductor devices operate under soft-switching conditions. Thus, the auxiliary circuit provides a larger overall efficiency. The feasibility of the auxiliary circuit is confirmed by simulation results.

Keywords

PWM power convertors; zero voltage switching; passive auxiliary circuit; portable systems; pulse width modulated synchronous buck converter; soft switched synchronous buck converter; zero voltage transition; Buck converters; Circuit simulation; Low voltage; Pulse width modulation; Pulse width modulation converters; Semiconductor devices; Steady-state; Switches; Switching circuits; Zero voltage switching; PWM; Soft Switching; Synchronous Buck Converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE

Conference_Location

Dearborn, MI

Print_ISBN

978-1-4244-2600-3

Electronic_ISBN

978-1-4244-2601-0

Type

conf

DOI

10.1109/VPPC.2009.5289448

Filename

5289448