Patent ID: 7956422
Filing Date: 2011-06-07
Classification: H01L,H02M

Abstract:
1. A semiconductor device comprising: a trench metal oxide semiconductor (MOS) transistor adapted to provide a current load from a power source; and a boost controller adapted or configured to control the trench MOS transistor, the boost controller being a single semiconductor device with the trench MOS transistor to form an integrated structure, wherein the boost controller comprises: P and N type polysilicon gates on the oxide film, respectively; P type source and drain electrodes in regions at opposite sides of the gate in the N type well; N type source and drain electrodes in regions at opposite sides of the gate in the P type well; a common drain on a back surface of the heavily-doped N+ type semiconductor substrate; and a device isolation layer adapted or configured to isolate the boost controller from the trench MOS transistor.