Asymmetrical PWM flyback converter

Author

Seo, D.H. ; Lee, O.J. ; Lim, S.H. ; Park, J.S.

Author_Institution

Power Electron. Team, Samsung Electro-Mech. Co.Ltd., Suwon, South Korea

Volume

2

fYear

2000

fDate

2000

Firstpage

848

Abstract

The asymmetrical PWM converter with the flyback output rectifier (asymmetrical PWM flyback converter) is proposed in this paper. The asymmetrical PWM flyback converter has the feature of zero-voltage switching (ZVS) in the active switches using resonance of the parasitic components. Moreover, the diode in the rectifier stage can commutate softly which minimizes the loss and noise during the commutation interval. The design procedure is presented, which includes the ZVS range of the active switches, and the component value satisfying the zero-current switching (ZCS) of the diode. Experimental results confirm the validity of this topology

Keywords

DC-DC power convertors; PWM power convertors; commutation; losses; rectifying circuits; switching circuits; ZVS; active switches; asymmetrical PWM converter; asymmetrical PWM flyback converter; commutation interval; flyback output rectifier; loss minimization; noise minimisation; parasitic components; rectifier stage diode; resonance; soft commutation; zero-current switching; zero-voltage switching; Diodes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Resonance; Switches; Switching converters; Topology; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual

Conference_Location

Galway

ISSN

0275-9306

Print_ISBN

0-7803-5692-6

Type

conf

DOI

10.1109/PESC.2000.879925

Filename

879925