SEMICONDUCTOR CIRCUIT, DRIVING METHOD OF IT AND SEMICONDUCTOR ELEMENT

摘要

PROBLEM TO BE SOLVED: To prevent generation of the overvoltage and reduction of the electromagnetic noise during the switching operation in a semiconductor circuit. SOLUTION: When a circuit is in a blocking state, the current and voltage characteristics of this device exhibits that the current flows slowly if the voltage is over a first voltage value V1 as well as under a second voltage value V2 and the current flows rapidly when the voltage is over the second voltage value V2. Accordingly, the energy stored in inductance in the circuit is consumed by a derivative resistance that the circuit comprises when the circuit transfers from the ON-state to the OFF-state, so that a bouncing voltage is restrained. As a result, generation of an electromagnetic noise and an overvoltage can be prevented.