Switching Capacitor ZVS-PWM DC/DC with Self-Driven SE
A novel switching capacitor PWM converter is proposed. The converter is a combination of a switching capacitor converter and a PWM converter, and it has the following advantages: 1) Zero voltage switching of all the MOSFETs. 2) Self-driven to eliminate SR drivers and save drive loss. Therefore there is no need to adjust the synchronous rectifier (SR) control timing, and this reduces body diode conduction loss. 3) High efficiency, flexible, good dynamic performance, and low cost in a solution for higher output current POL applications. The discrete magnetic can cope with this novel topology. In order to further reduce SR drive loss, and auto transformer self-driven method was employed.
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