Patent ID: 8717789
Filing Date: 2014-05-06
Classification: H02M,Y02B,Y02P

Abstract:
1. A three-phase buck-boost power factor correction (PFC) circuit, comprising: a first single-phase buck-boost PFC circuit receiving a first phase voltage of a three-phase voltage and having a first and a second output terminals and a neutral-point for outputting a first and a second output voltages; a second single-phase buck-boost PFC circuit receiving a second phase voltage of the three-phase voltage and coupled to the first and the second output terminals and the neutral-point; a third single-phase buck-boost PFC circuit receiving a third phase voltage of the three-phase voltage and coupled to the first and the second output terminals and the neutral-point; a first output capacitor coupled to the first output terminal and the neutral-point; a second output capacitor coupled to the neutral-point and the second output terminal; and a neutral line coupled to the neutral-point.