Abstract
This paper deals with a resonant gate-drive circuit for fast and high-voltage power semiconductor devices, which is equipped with optical fibers for both control and power supply. A resonant inductor connected with the gate terminal of the power device makes it possible to charge or discharge the gate-to-source voltage by using parallel resonance between the inductor and the input capacitance. The optical fibers can be used to deliver the driving power to the circuit, because the circuit theoretically produce no power consumption for driving the power device. Moreover, the proposed circuit makes it possible to suppress fluctuations in the gate-to-source voltage caused by rapid charging or discharging of the drain-to-source terminals. Experimental results are shown to verify the viability of the proposed circuit.
