Invention Grant
- Patent Title: Electrostatic discharge power clamp with fail-safe design
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Application No.: US14577145Application Date: 2014-12-19
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Publication No.: US09882376B2Publication Date: 2018-01-30
- Inventor: John A. Fifield , Robert J. Gauthier, Jr. , Junjun Li
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Sherman IP LLP
- Agent Kenneth L. Sherman; Steven Laut
- Main IPC: H02H9/00
- IPC: H02H9/00 ; H02H9/04 ; H01L23/522 ; H01L27/02 ; H01L29/94

Abstract:
Electrostatic discharge protection circuits and methods of fabricating an electrostatic discharge protection circuit, as well as methods of protecting an integrated circuit from a transient electrostatic discharge event. The electrostatic discharge protection circuit includes a power clamp device, a first timing circuit with a first resistor and a first capacitor that is coupled with the first resistor at a first node, and a second timing circuit including a second resistor and a second capacitor that is coupled with the second resistor at a second node. The electrostatic discharge protection circuit further includes a logic gate with a first input coupled with the first node, a second input coupled with the second node, and an output coupled with the power clamp device. The logic gate responds to voltages at the first and second nodes to control the impedance state of the power clamp device.
Public/Granted literature
- US20160181796A1 ELECTROSTATIC DISCHARGE POWER CLAMP WITH FAIL-SAFE DESIGN Public/Granted day:2016-06-23
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