Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.879925
