Study on Dual Boost PFC Topology

Rectifier power loss of traditional boost PFC is the major loss in communication UPS power system.The big advantage of bridgeless topology is power saving.Bridgeless boost PFC topology removed the rectifiers,so the power rate is obviously increased.In this article,high-power applications of a high-efficiency dual boost PFC is analyzed.Through lab test,it was proved that the power rate of dual boost PFC topology was about 1% higher than traditional boost PFC topology.Meanwhile,it introduced the use of resistance sampling control circuit and how to reduce EMI interference.