Soft-switching Resonant Active Clamp Flyback Converter based-on GaN HEMTs for MHz High Step-up Applications

For MHz GaN-based power converters, zero-voltage switching (ZVS) is one of the critical strategies to avoid excessive switching losses of hard-switching. Active clamp flyback (ACF) is one of the most commonly used isolated topologies with the capability of zero-voltage turn on when the switching sequence of the clamping switch is appropriately controlled. However, sharp current drops of leakage in...