Patent ID: 7510953

Claim:
A method for manufacturing a semiconductor device, comprising: providing a semiconductor die of one conductivity type; forming a termination trench in said semiconductor die; forming a mask over a portion of said semiconductor die; forming laterally spaced base regions of another conductivity type in said semiconductor die by implanting dopants of said another conductivity type into regions of said semiconductor die not covered by said mask, said base regions being spaced from one another by a region of said one conductivity disposed below said mask; forming spaced trenches after forming said base regions through said base regions to serve as gate trenches for a semiconductor switching device; forming a schottky device over said region of said one conductivity type between said base regions; forming source regions in said base regions adjacent said trenches; and forming a common first contact in contact with said schottky device and said source regions wherein said termination trench extends to a depth below said gate trenches, and is formed in a step independent of a step for forming said gate trenches.