Patent ID: 9160329
Filing Date: 2015-10-13
Classification: H03K

Abstract:
1. A circuit control device controlling a switching circuit which has a semiconductor switching element, comprising: a malfunction detection portion that detects occurrence of malfunction in the switching circuit and outputs a malfunction detection signal; a drive signal output portion that receives a drive control signal and outputs a drive signal to the switching element, the switching element acting on the basis of the drive signal, the drive control signal being a pulsed signal; a main controller outputs the drive control signal to the drive signal output portion and stops the output of the drive control signal when receiving the malfunction detection signal from the malfunction detection portion; and an obtaining portion that has storage medium that stores circuit information on status of the switching circuit except for the malfunction detection signal, that obtains the circuit information and that is triggered to update the stored content of the circuit information with the obtained circuit information by an input of the pulse of the drive control signal, wherein the obtaining portion obtains the circuit information after the detection of the malfunction and is triggered to update the stored content of the circuit information with the obtained information by the input of pulses of the drive control signal after the detection of the malfunction to the stop of the input of the drive control signal.