Resonant DC/DC converter with class E oscillator

The paper presents a new free-running-oscillation resonant DC/DC converter with a class E oscillator, along with its design procedure and experimental results. The proposed converter is composed of a class E oscillator and a class E rectifier. This circuit is a free-running-oscillation system and has no gate-drive circuit to drive the MOSFET. The proposed converter has the ability to achieve high power conversion efficiency under high frequency operation because of class E switching at both oscillator and rectifier. Experimentally measured power conversion efficiency is 78.9% for 1.55 W output power at an operating frequency 2.00 MHz.

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