Patent ID: 6809941
Filing Date: 2004-10-26
Classification: H02M,Y02B

Abstract:
A power factor correction circuit comprising:a power circuit comprising first and second input capacitors forming a bank node; first and second inductors, the first and second inductors inductively coupled, the first inductor connected to the first input capacitor and the second inductor connected to the second input capacitor; first and second switches, the first switch connected to the first inductor and the bank node, the second switch connected to the second inductor and the bank node; and an output circuit connected to the first and second inductors and the bank node, the output circuit operable to produce an output voltage; a control circuit operable to monitor the output voltage and produce a switch signal at a switching frequency; and a drive circuit coupled to the control circuit and the first and second switches, the drive circuit operable to operate the first and second switches based on the switch signal.