发明名称 Current leakage in RC ESD clamps
摘要 Aspects of the invention provide an electrostatic discharge (ESD) protection device for eliminating current leakage, and a related method. In one embodiment, an ESD protection device includes: a resistor-capacitor (RC) circuit for receiving a power supply voltage; an ESD clamp including a plurality of n-type field-effect transistors (nFETs) for protecting the IC during an ESD event; a trigger circuit for receiving an output of the RC circuit and generating a trigger pulse to turn on the ESD clamp during the ESD event; and an nFET bias selection circuit connected to the trigger circuit, the nFET bias selection circuit for selecting one of: a low voltage supply or a negative bias voltage supply for the trigger circuit, such that the trigger circuit generates a trigger pulse, in response to selecting the negative bias voltage supply, to turn off the ESD clamp during normal operation.
申请公布号 US8643987(B2) 申请公布日期 2014.02.04
申请号 US201213464131 申请日期 2012.05.04
申请人 CHU ALBERT M.;IADANZA JOSEPH A.;MUHAMMAD MUJAHID;SEITZER DARYL M.;SHETTY ROHIT;TU JANE S.;INTERNATIONAL BUSINESS MACHINES CORPORATION 发明人 CHU ALBERT M.;IADANZA JOSEPH A.;MUHAMMAD MUJAHID;SEITZER DARYL M.;SHETTY ROHIT;TU JANE S.
分类号 H02H9/00;H02H3/20;H02H3/22;H02H9/04 主分类号 H02H9/00
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