The growing market of plugin hybrid electric vehicle has certain limitations like more charging time, less driving range and fewer charging stations. PHEV chargers are classified as off-board and on-board chargers. Off-board chargers provide fast charging takes 20 mins to 1 hour while onboard chargers provide office daytime or home overnight charging takes 4 to 10 hours to fully charge a PEV battery. In this paper, a single-phase integrated onboard charger, using the PEV three phase ac machine and its traction converter, is proposed. The charging process enables Power Factor Correction (PFC) at the source end. Three phase winding of the AC machine is utilized as a mutually coupled inductor to produce a two-channel boost converter. A 3-kW prototype using a 220-Vrms, 3-phase PMSM is built to experimentally verify the performance of the proposed integrated charging approach. A nearly unity Power Factor (PF) and 3.96% Total Harmonic Distortion (THD) of input ac current is acquired with a maximum efficiency of 93.1%.