Patent ID: 8264057
Filing Date: 2012-09-11
Classification: H01L,H02M,H03K

Abstract:
1. A semiconductor device driving high potential side and low potential side power devices, said semiconductor device comprising: a low potential side circuit provided at a low potential region formed on a semiconductor substrate region for driving said low potential side power device, a high potential side circuit provided at a high potential region formed on said semiconductor substrate region, having a high voltage applied for driving said high potential side power device, a virtual ground potential pad arranged at said high potential region, coupled to a connection node of said high potential side and low potential side power devices for supplying a virtual ground potential to said high potential side circuit, a common ground potential pad supplying a common ground potential to said low potential side circuit and said high potential side circuit, and a high-voltage diode formed on said semiconductor substrate region, having a cathode electrically connected to said virtual ground potential pad, and an anode electrically connected to said common ground potential pad, wherein said semiconductor substrate region is of a first conductivity type, said high-voltage diode is arranged between said high potential region and said low potential region, said high-voltage diode includes