Power converters having balanced power rail currents

摘要

A power factor correction (PFC) circuit includes a coupled split boost choke having at least two windings 231, 232, at least two boost diodes D6, D7 and at least two power rails 104, 106. Each power rail includes one of the windings and one of the boost diodes. The PFC circuit further includes a current balancing circuit 108 coupled between the power rails for substantially balancing currents in such power rails.