发明授权
- 专利标题： Electro-static discharge clamp (ESD) for NxVDD power rail
- 专利标题（中）： 用于NxVDD电源轨的静电放电钳（ESD）
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申请号： US13415621申请日： 2012-03-08
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公开(公告)号： US08760828B2公开(公告)日： 2014-06-24
- 发明人: Wei Yu Ma
- 申请人： Wei Yu Ma
- 申请人地址： TW Hsin-Chu
- 专利权人： Taiwan Semiconductor Manufacturing Co., Ltd.
- 当前专利权人： Taiwan Semiconductor Manufacturing Co., Ltd.
- 当前专利权人地址： TW Hsin-Chu
- 代理机构： Duane Morris LLP
- 主分类号： H02H3/22
- IPC分类号： H02H3/22
摘要：
A circuit with an electro-static discharge clamp coupled to a first power source and second power source. The electro-static discharge clamp includes an NMOS stack and an electro-static discharge detector. The NMOS stack has a first NMOS transistor with gate node ng1 and a second NMOS transistor with gate node ng2. The electro-static discharge detector is configured to control the NMOS stack, and may include three switches. A first switch is configured to switch the gate node ng1 to the second power source. A second switch is configured to switch the gate node ng1 to the gate node ng2. A third switch is configured to switch the gate node ng1 to the ground.
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