High-frequency high-efficiency resonant converter with class-EM inverter and class-E rectifier

This paper proposes a resonant converter with the class-E_M inverter along with its design procedure. Because the class-EM inverter is applied to the inverter part of the resonant dc/dc converter, the proposed converter achieves high power conversion efficiency at high frequencies with low cost. By using the numerical design procedure, the accurate component values for achieving multiple constraint conditions without any analyses. In the laboratory measurements, the proposed converter achieved 88.5 % power conversion efficiency with 7.5 W output power at 1 MHz operating frequency.