发明名称 |
METHOD AND APPARATUS FOR DETECTION AND PREVENTION OF BULK CMOS LATCHUP |
摘要 |
A method and apparatus are provided for detection and prevention of bulk complementary metal oxide semiconductor (CMOS) latchup. A separate power distribution is provided for coupling a positive voltage supply rail to the N well and a ground voltage supply rail to the P well of the CMOS circuit. At least one sensor monitors current flow in a bias voltage applied to at least one of an N well and a P well of the CMOS circuitry. A latchup event is detected responsive to a predefined increase in the monitored current flow. A switch temporarily interrupts the connection of at least one of the N well and the P well to the respective voltage supply rail when the latchup event is detected.
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申请公布号 |
US2008048683(A1) |
申请公布日期 |
2008.02.28 |
申请号 |
US20070874280 |
申请日期 |
2007.10.18 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CECCHI DELBERT R. |
分类号 |
G01R31/26 |
主分类号 |
G01R31/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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