发明授权
- 专利标题: Single event latch-up prevention techniques for a semiconductor device
- 专利标题(中): 半导体器件的单事件闭锁预防技术
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申请号: US13560010申请日: 2012-07-27
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公开(公告)号: US08685800B2公开(公告)日: 2014-04-01
- 发明人: Jianan Yang , James D. Burnett , Brad J. Garni , Thomas W. Liston , Huy Van Pham
- 申请人: Jianan Yang , James D. Burnett , Brad J. Garni , Thomas W. Liston , Huy Van Pham
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Yudell Isidore Ng Russell PLLC
- 主分类号: H01L21/332
- IPC分类号: H01L21/332
摘要:
A technique for addressing single-event latch-up (SEL) in a semiconductor device includes determining a location of a parasitic silicon-controlled rectifier (SCR) in an integrated circuit design of the semiconductor device. In this case, the parasitic SCR includes a parasitic pnp bipolar junction transistor (BJT) and a parasitic npn BJT. The technique also includes incorporating a first transistor between a first power supply node and an emitter of the parasitic pnp BJT in the integrated circuit design. The first transistor includes a first terminal coupled to the first power supply node, a second terminal coupled to the emitter of the parasitic pnp BJT, and a control terminal. The first transistor is not positioned between a base of the pnp BJT and the first power supply node. The first transistor limits current conducted by the parasitic pnp bipolar junction transistor following an SEL.
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