A new boost power factor pre-regulator

摘要

A novel boost power factor corrector using a single switch isdiscussed. The new circuit is analyzed in steady state and experimentalresults obtained from a laboratory prototype are also provided. Thenovel converter has low current and voltage stresses and has a simplecontrol loop to achieve near unity power factor with the aid of thecommercially available chip UC3854. Another advantage of the converteris the ability to provide soft switching conditions for the diodes andzero-current switching for the active switch at turn-on using only oneswitch without increasing the component count