US Patent 11183999 Control circuit and semiconductor device

A control circuit controlling to drive a switching device includes a first detection circuit that detects whether a power supply voltage received by a drive circuit that drives the switching device drops below a first level, a second detection circuit that receives a current flowing through the switching device and detects whether the current exceeds a first value, and an abnormality detection circuit that causes the drive circuit to turn off the switching device, based on whether a condition that the power supply voltage is lower than the first level and the current flowing through the switching device is larger than the first value is satisfied.