EV PFC A PFC CIRCUIT DEVICE FOR HIGH-POWER HIGH-POWER DENSITY EV ON-BOARD CHARGER

摘要

The present invention relates to a PFC circuit device for a high capacity and high electrical density EV-installed charger. The PFC circuit device comprises: a rectifying circuit unit; a PFC converter; and a CCM controller. According to the PFC circuit device of the present invention, an inductor disposed in the PFC converter is designed as a DCM-based inductor by using a ferrite material. The PFC converter is configured to be switching-controlled in a CCM mode in the CCM controller. Thus, a DCM PFC hardware design is applied to a conventional CCM PFC control method, and an EMI function is improved. Also, the size of a PFC inductor is reduced, and thus a designed high capacity charger is produced as an EV-installed charger while having a small compact size.