An improved hybrid energy recovery soft switching snubber for the Flyback converter

The paper advocates a new simple hybrid energy recovery soft switching snubber circuit of the Flyback switch mode power supply (SMPS). Basically, there are two parts of analysis and design, one is the simple hybrid snubber circuit with spike voltage protection generated by the leakage inductance and other is energy recovery features. The quasi-empirically designed components and devices of the soft switching Hybrid snubber´s circuit also limit the substantial current and voltage stress across the main switch during both under turn-on and turn-off condition. It restrains the ringing to safe amplitude of gate pulse in the switch electromagnetic interference, by virtue of which five to six percent efficiency attainment is practicable of the Flyback converter, compared to conventional resistance- capacitance and diode (RCD) snubber Flyback converter.