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.