Patent ID: 8223518
Filing Date: 2012-07-17
Classification: H02J,H02M,Y02B,Y02P

Abstract:
1. A multi-phase (N) power supply having current shared power factor correction, comprising: N input rectifier filters each receiving a respective different one of an N phase AC input signal and providing therefrom one of N rectified signals; N single phase power factor correction pre-regulators each for receiving a respective different one of said rectified signals and providing therefrom a regulated signal; a current sharing N way to single way multiplexing switch network for receiving said N regulated signals and providing therefrom a single output signal, wherein the single output signal is one of the regulated signals from the N single phase power correction pre-regulators; a DC to DC converter for receiving said single output signal and supplying a DC output signal to a load; and a switch control for controlling a plurality of switches comprising the current sharing N way to single way multiplexing switch network in a continuously repeated sequence such that each single phase power factor correction pre-regulator sources the DC-to-DC converter at a duty cycle of 1/N during a given sequence.