Design of 6.78 MHz SiC MOSFET class-E inverter with a class-phi
high-speed driver <Abstract> This paper presents a design challenge that a SiC MOSFET class-E inverter and its driver are regarded as a whole system to be designed. The driver is based on a class-$\Phi$ inverter which is a novel class-E inverter with a harmonic resonant filter, enabling the driver to achieve not only the class-E zero-voltage-switching/zero-derivative-switching (ZVS/ZDS) conditions but also a low switch-voltage stress. In this paper, a numerical design procedure is given for the whole system. A design example is also given along with its laboratory experiment under 156~W output power and 6.78~MHz operating frequency to demonstrate the validity of the proposed design procedure. |