DRIVE CIRCUIT OF POWER SEMICONDUCTOR DEVICE

摘要

Provided is a driving circuit for a power semiconductor element, which can achieve a high-speed response to a voltage change (dV/dt) while reducing power consumption and prevent the malfunction of the power semiconductor element by a simple circuit configuration.  The driving circuit for the power semiconductor element is provided with a control circuit for performing on/off control of the power semiconductor element, a direct-current power supply for supplying voltage between control terminals of the power semiconductor element, and a switching element connected between the control terminals of the power semiconductor element.  The switching element is turned on when the power-supply voltage of the direct-current power supply decreases or turned on when the voltage between the control terminals of the power semiconductor element increases while the power-supply voltage of the direct-current power supply decreases to thereby cause a short-circuit between the control terminals of the power semiconductor element.