Topology Characteristics Analysis and Performance Comparison for Optimal Design of High Efficiency PFC Circuit for Telecom

摘要

This paper is selecting typical PFC topology that can be application design of high-capability power of high efficiency, high power factor correction (PFC) performances, and review its operating characteristics, and analyze the actual performance differences to manufacture 2kwatt grade product under the same conditions. The first topology is average current mode control (ACM) PFC that the performance is excellent and applications examples are various in conventional PFC circuit methods. The second topology is related to Interleaved PFC of dual boost way that has the advantages of current ripple performance improvement and current stress reduction properties. Third and fourth topology is back to back bridgeless (BTBBL) PFC and semi-bridgeless (SBL), and the object of topologies is to improve loss of bridge diode. PSIM simulation was used for comparison of topology and prototype was designed with power density standard of more 1.35kW/dm~3 under 1U size low-profile conditions. To minimize the performance comparison errors, design conditions such as board space, heat-sink and PCB pattern synchronize to the maximum. It should be note that topology efficiency and power factor performance difference was identified objectively through comparing tests.