A semiconductor device includes a switching element outputting from a sense terminal a sense current at a fixed rate relative to a main current flowing in the switching element; a sense resistor connected at a first end to the sense terminal and to ground at a second end; a correction current generating circuit that supplies and extracts a correction current to at the first end of the sense resistor; an overcurrent protective circuit that receives a sense voltage generated when the sense current and the correction current flow through the sense resistor, and outputs a stop signal when the sense voltage is larger than a reference voltage; and a driving circuit that stops driving the switching element when the stop signal is received from the overcurrent protective circuit.