Patent ID: 7265650

Claim:
A PFC rectifier powered by an ac input voltage source having first and second half cycles, comprising: a first converter having a first inductive element, said first converter operating during the first half cycle and remaining idle during the second half cycle; a second converter having a second inductive element, said second converter operating during the second half cycle and remaining idle during the first half cycle; a first magnetic core having a first closed flux path; a second magnetic core having a second closed flux path, said first closed flux path being independent from the second closed flux path, wherein the first inductive element comprises a first winding that electromagnetically couples the first magnetic core to the second magnetic core, and the second inductive element comprises a second winding that electromagnetically couples the first magnetic core to the second magnetic core independent of the electromagnetic coupling of the first winding such that current application in the first winding during the first half cycle does not induce a substantial voltage in the second winding and current application in the second winding during the second half cycle does not induce a substantial voltage in the first winding.