Patent ID: 7355868
Filing Date: 2008-04-08
Classification: H02M,Y02B,Y02P

Abstract:
1. A bridgeless PFC boost converter comprising: a current transformer having first and second primaries; a boost inductor having a first end connected to a first AC input terminal and a second end connected to a first junction defined between the anode of a first diode and a first end of said first primary, the second end of the first primary being connected to a first terminal of a first switch; a second terminal of the first switch connected to a common line; a parallel circuit of a capacitance and a load connected between the cathode of the first diode and the common line; a series circuit of a second diode, said second primary and a second switch connected between the cathode of the first diode and the common line; and a second AC input terminal connected to a second junction defined between the second primary and the second switch.