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This paper proposes an oxide filled extended trench gate super junction(SJ) MOSFET structure to meet the need of higher frequency power switches application.Compared with the conventional trench gate SJ MOSFET,new structure has the smaller input and output capacitances,and the remarkable improvements in the breakdown voltage,on-resistance and switching speed.Furthermore,the SJ in the new structure can be realized by the existing trench etching and shallow angle implantation,which offers more freedom to SJ MOSFET device design and fabrication.
This paper proposes an oxide filled extended trench gate super junction (SJ) MOSFET structure to meet the need of higher frequency power switch application. Compared with the conventional trench gate SJ MOSFET, new structure has the smaller input and output capacitances, and the remarkable improvements in the breakdown voltage, on-resistance and switching speed. Future plus, the SJ in the new structure can be realized by the existing trench etching and shallow angle implantation, which offers more freedom to SJ MOSFET device design and fabrication.