Patent ID: 9147763
Filing Date: 2015-09-29
Classification: H01L

Abstract:
1. A semiconductor device, comprising a semiconductor body comprising a main horizontal surface, an active area, a punch through area, a source metallization arranged on the main horizontal surface and a drain metallization, in the active area the semiconductor body further comprising in a vertical cross-section substantially orthogonal to the main horizontal surface: a first charge-compensation structure comprising a plurality of spaced apart first n-type pillar regions; and an n-type first field-stop region comprised of a semiconductor material, in Ohmic contact with the drain metallization and the first n-type pillar regions, and having a doping concentration per area higher than a breakdown charge per area of the semiconductor material divided by the elementary charge, in the punch-through area the semiconductor body further comprising: a p-type semiconductor region in Ohmic contact with the source metallization; a floating p-type body region extending from the punch-through area into the active area; and an n-type second field-stop region in Ohmic contact with the first field-stop region, forming a pn-junction with the floating p-type body region, arranged between the p-type semiconductor region and the floating p-type body region, and having a doping concentration per area lower than the breakdown charge per area of the semiconductor material divided by the elementary charge.