Patent ID: 9742389
Date: 2017-08-22
CPC Classifications: H01L,H03K

Claim:
1. A semiconductor device comprising: a switching element chip, in which a switching element is formed; a first sensing element, which is provided in the switching element chip and is configured to detect a first output voltage based on an operating current of the switching element; a second sensing element, which is provided outside the switching element chip and is configured to detect a second output voltage based on the operating current of the switching element; and a control circuit, which detects the operating current based on the second output voltage and interrupts the switching element, based on the first output voltage of the first sensing element and the detected operating current, when the switching element is overheated, wherein, in the switching element chip, a first detection current and a second detection current are branched from the operating current and then are output, and wherein the first detection current flows in the first sensing element, and the second detection current flows in the second sensing element.