Patent ID: 7167382
Filing Date: 2007-01-23
Classification: H02M,Y02B

Abstract:
1. A semiconductor device, comprising a switching element ( 1 ), comprising a high potential terminal, a low potential terminal and a control terminal; and a control circuit ( 2 ) comprising a reference voltage terminal (BP) connected via a regulator ( 3 ) to the high potential terminal, and a feedback signal input terminal (FB), the control circuit being connected to the high potential terminal, low potential terminal and control terminal of the switching element, thereby to control a switching operation that is an ON/OFF iteration of the switching element ( 1 ), the control circuit ( 2 ), comprising: a first current mirror circuit ( a second current mirror circuit comprising the first n-type switch element ( an overcurrent detection level tuning circuit ( an overcurrent detection circuit ( the intermittent oscillation control circuit (