A new interleaved flyback converter based on hysteretic control

This paper proposes a new interleaved flyback topology based on hysteretic control. The output current ripple can be reduced with the interleaved structure, and both switches can achieve Zero-voltage-switching (ZVS). Besides, the energy of leakage inductance can be fully recycled, which will improve the efficiency of the converter. The topology is based on hysteresis control, with this control scheme, there is no error amplifier and compensation network, and can achieve excellent steady state effect. The detailed operation principle and steady-state analysis are presented. Finally, the analyses above are verified by simulation.