Invention Grant
US09000481B2 Low capacitance transient voltage suppressor (TVS) with reduced clamping voltage
有权
具有降低钳位电压的低电容瞬态电压抑制器(TVS)
- Patent Title: Low capacitance transient voltage suppressor (TVS) with reduced clamping voltage
- Patent Title (中): 具有降低钳位电压的低电容瞬态电压抑制器(TVS)
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Application No.: US14469103Application Date: 2014-08-26
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Publication No.: US09000481B2Publication Date: 2015-04-07
- Inventor: Lingpeng Guan , Madhur Bobde , Anup Bhalla , Jun Hu , Wayne F. Eng
- Applicant: Alpha & Omega Semiconductor Incorporated
- 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: H01L29/66
- IPC: H01L29/66 ; H01L29/06 ; H01L21/20 ; H01L21/76 ; H01L21/425 ; H01L27/02

Abstract:
A low capacitance transient voltage suppressor with reduced clamping voltage includes an n+ type substrate, a first epitaxial layer on the substrate, a buried layer formed within the first epitaxial layer, a second epitaxial layer on the first epitaxial layer, and an implant layer formed within the first epitaxial layer below the buried layer. The implant layer extends beyond the buried layer. A first trench is at an edge of the buried layer and an edge of the implant layer. A second trench is at another edge of the buried layer and extends into the implant layer. Each trench is lined with a dielectric layer. A set of source regions is formed within a top surface of the second epitaxial layer. The trenches and source regions alternate. A pair of implant regions is formed in the second epitaxial layer.
Public/Granted literature
- US20140363946A1 LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR (TVS) WITH REDUCED CLAMPING VOLTAGE Public/Granted day:2014-12-11
Information query
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