Patent ID: 8248041
Filing Date: 2012-08-21
Classification: H02M,Y02B

Abstract:
1. A controller for an interleaved power factor correction (PFC) converter that includes switches selectively turned ON and OFF to convert an input voltage to a desired output voltage, the controller comprising: input terminals for monitoring an input voltage of the PFC converter, an output voltage of the PFC converter, a sum of inductor currents, and an amplified error signal that is based on the monitored output voltage; a first circuit for generating an ON time current having a magnitude related to the amplified error signal and the monitored input voltage; a second circuit for generating an OFF time current having a magnitude related to the ON time current, the monitored input voltage, and the monitored output voltage; and gate drive circuitry that provides gate drive signals to the switches of the interleaved PFC converter at a frequency determined by magnitudes of the ON time current and the OFF time current.