Patent ID: 7952139
Filing Date: 2011-05-31
Classification: H01L

Abstract:
1. A semiconductor power device comprising an active cell area having a plurality of power transistor cells supported on a semiconductor substrate, wherein: said power transistor cells are integrated and functioning together with a plurality of Schottky diodes disposed in areas between said power transistor cells on said semiconductor substrate wherein said Schottky diodes disposed between said active transistor cells comprise separated body dopant regions near a top surface of said semiconductor substrate cover under a Schottky junction barrier metal and wherein said separated body dopant regions are disposed in an upper source dopant layer on top of a lower source dopant layer in said semiconductor substrate and wherein said upper source dopant layer having a smaller dopant concentration than said lower source dopant layer and having an opposite conductivity type from said separated body dopant regions; and each of said power transistor cells comprising a trenched gate surrounded by a body region encompassing a source region therein and one of said separated body dopant regions is disposed in an outer upper edge in one of said body regions as a junction barrier Schottky (JBS) body region of one of said power transistor cells wherein said JBS body region disposed next to said Schottky diodes has no source region encompassed therein.