Analysis and Design of Resonant Class Φ2 Inverter with Low-Voltage Stress

Abstract

This paper introduces analysis and design of a switched-mode ZVS Class Φ2 inverter that is capable to operate at high frequencies. The features of the inverter include low-voltage stress, small passive storage elements, and significant reduction of switching losses. The presented inverter, which has a ground-ended switch, can be constituted to exhibit soft-switching at operating of multimegahertz. A resonant network is tuned to second-harmonic to reduce voltage stress at the switch. The tuned series network has the desired impedance to form the switch voltage waveform from sinusoidal to a quasi-rectangular shape. The operation of the presented circuit, design procedure, and power loss analysis of the inverter are provided. The proposed topology is designed and simulated at 20 MHz. The inverter can be used in the industry, such as plasma generation and high-performance dc-dc converters among other applications requiring high frequencies.