Design and Optimization of VHF Class $\Phi 2$ Inverter Dedicated for Wireless Charging Application

This paper presents the design and optimization of a high-efficiency and low-cost Class
$\mathbf{\Phi 2}$
inverter for wireless charging applications at 30 MHz, with a target output power of 80 W. The inverter is optimized using a optimization algorithms to determine the optimal values of circuit components, including the output capacitance and input impedance. The inverter is built using GaN transistors to achieve high efficiency and designed to operate at a high switching frequency. Simulation results show a peak efficiency of 94.5% and a maximum output power of 82 W. The proposed Class
$\mathbf{\Phi 2}$
inverter provides a promising solution for wireless charging applications at 30 MHz, offering high efficiency and low-cost benefits for power transfer of 80 W and above.