Invention Grant
- Patent Title: Integrating Schottky diode into power MOSFET
- Patent Title (中): 将肖特基二极管集成到功率MOSFET中
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Application No.: US13098852Application Date: 2011-05-02
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Publication No.: US08502302B2Publication Date: 2013-08-06
- Inventor: Yi Su , Daniel Ng , Anup Bhalla , Hong Chang , Jongoh Kim , John Chen
- Applicant: Yi Su , Daniel Ng , Anup Bhalla , Hong Chang , Jongoh Kim , John Chen
- Applicant Address: US CA Sunnyvale
- Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee Address: US CA Sunnyvale
- Agency: JDI Patent
- Agent Joshua D. Isenberg
- Main IPC: H01L27/06
- IPC: H01L27/06 ; H01L21/336

Abstract:
A semiconductor device includes a plurality of trenches including active gate trenches in an active area and gate runner/termination trenches and shield electrode pickup trenches in a termination area outside the active area. The gate runner/termination trenches include one or more trenches that define a mesa located outside an active area. A first conductive region is formed in the plurality of trenches. An intermediate dielectric region and termination protection region are formed in the trenches that define the mesa. A second conductive region is formed in the portion of the trenches that define the mesa. The second conductive region is electrically isolated from the first conductive region by the intermediate dielectric region. A first electrical contact is made to the second conductive regions and a second electrical contact to the first conductive region in the shield electrode pickup trenches. One or more Schottky diodes are formed within the mesa.
Public/Granted literature
- US20120280307A1 INTEGRATING SCHOTTKY DIODE INTO POWER MOSFET Public/Granted day:2012-11-08
Information query
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