A novel single-phase active-clamped power factor correction converter is presented in this paper. The operation principle and the circuit parameters of the converter are analyzed. The proposed scheme is verified on a 3kW prototype converter operating at 100kHz. Simulating and experimental results prove that this circuit not only realizes the ZVT controlled by the main switch and the ZCS controlled by the auxiliary switch, but also has a low current and voltage stress, meanwhile, the overall efficiency of the proposed converter is 92%.