Zeta Converter with Resistor-capacitor-diode Snubber and H-type Snubber to Reduce Switching and Reverse-recovery Losses

In this paper, a zeta converter with a resistor-capacitor-diode (RCD) snubber and an H-type snubber to reduce switching and reverse-recovery losses is proposed. The proposed converter has the following advantages: (1) By incorporating an RCD snubber, the power switch can achieve a zero-voltage transition (ZVT) to reduce the switching losses of the power switch. (2) By incorporating an H-type snubber, the reverse-recovery losses of the power diode can be reduced. Therefore, the overall efficiency of the proposed converter is increased significantly. Finally, a prototype zeta converter with an RCD and an H-type snubber to reduce the switching losses of the power switch and the reverse-recovery losses of the power diode is built. Experimental results verify that the proposed zeta converter is relatively suitable for the requirements of a low or medium power.