| 摘要 |
A driver circuit for a semiconductor switching device includes a drive power source, a capacitor and four switches, which form a bridge circuit. The capacitor is provided between the four switches. In one cycle of application of a voltage to a gate of the semiconductor switching device to turn on the semiconductor switch, the first and the second switches, which are diagonal, are turned off and the third and the fourth switches, which are diagonal, are turned on to charge the capacitor. Then only the first switch is turned on to apply the voltage to the gate, and lastly only the second switch is turned on to discharge the capacitor thereby to apply a negative voltage to the gate of the semiconductor switching device. |
