Semiconductor device

A semiconductor device that receives an input signal, the semiconductor device comprising:

• a switching element;
• a drive circuit that performs a switching of the switching element using the input signal;
• and
• an abnormal input control circuit, including
• at least one of a first detection circuit that detects, as a first detection result, a noise superimposed on the input signal, a second detection circuit that detects, as a second detection result, whether a pulse width of the input signal is less than or equal to a determined pulse width, or a third detection circuit that detects, as a third detection result, a mismatch between a level of the input signal and an operation of the switching element, and
• an alarm and protection circuit, the alarm and protection circuit having at least one of an alarm signal output function or a drive adjustment function, based on the first detection result, the second detection result or the third direction result, the alarm signal output function outputting an alarm signal and the drive adjustment function adjusting a driving of the switching element.