Switched Transformer based Secondary Overcurrent Mitigation Strategies for Integrated Magnetics Based Dual Output AC-DC PFC Flyback and Pushpull Converter Topologies

The following paper discusses the reasons for the overcurrent condition arising at the secondary output winding in the Integrated Magnetics based Dual Output AC- DC Flyback and Pushpull Converter topologies with active Power Factor Correction, and the corresponding mitigation strategies. Overcurrent mitigation solutions using switched transformer tapping are proposed on both the transformer primary and secondary sides for both the topologies. Simulation results are included to demonstrate the viability of the proposed solutions.