Isolated converter topologies for power factor correction — A comparison

This paper deals with the analysis, design and analog based hardware implementation of three different topologies of high frequency isolated AC-DC converters in discontinuous current mode (DCM) of operation for power factor correction and output voltage regulation. These switching converters are designed for low power rating and low output voltage, typically 20.25 W with 13.5 V in DCM operation. Modelling and simulation is carried out in a standard PSIM software environment. Laboratory prototypes of the proposed converters in DCM operation are developed and test results are presented to compare with the simulation results.