Patent ID: 8546874
Filing Date: 2013-10-01
Classification: H01L

Abstract:
1. A power MOSFET device, comprising: a drift layer having a first conductivity type; a body region in the drift layer, the body region having a second conductivity type opposite the first conductivity type and forming a p-n junction with the drift layer; a source region in the body region, the source region having the first conductivity type; a drain region adjacent the drift layer; and a reverse conducting static induction rectifier (SIR) channel region comprising a buried region in the body region, the SIR channel region extending through the body region from the source region to the drift layer, wherein the reverse conducting SIR channel region is configured to be fully depleted at zero drain-source voltage and to form a conductive channel between the source region and the drift layer at a source to drain voltage that is less than a built-in potential of the p-n junction between the body region and the drift layer.