Invention Grant
- Patent Title: Electromigration wearout detection circuits
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Application No.: US15070577Application Date: 2016-03-15
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Publication No.: US10295589B2Publication Date: 2019-05-21
- Inventor: Keith A. Jenkins , Siyuranga O. Koswatta
- 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: Cantor Colburn LLP
- Agent L. Jeffrey Kelly
- Main IPC: H02H1/00
- IPC: H02H1/00 ; G01R31/28 ; H02H3/08

Abstract:
Embodiments include methods, and systems of an integrated circuit having electromigration wearout detection circuits. Integrated circuit may include a detection element and a reference element. Detection element is subject to normal operation current. Reference element is not subject to normal operation current. A resistance of detection element is monitored to detect electromigration wearout. The electromigration wearout detection monitoring circuit may be configured to perform: periodically measuring resistance of detection element, calculating resistance change of detection element over a predetermined time period, comparing resistance change of detection element calculated to a predetermined safety threshold, and take mitigation actions when resistance change of detection element exceeds predetermined safety threshold. The mitigation actions may include switching to a redundant circuit of the integrated circuit, shutting down the integrated circuit, and sending a signal to initiate a service call. The predetermined safety threshold may be 1% of resistance change of the detection element.
Public/Granted literature
- US20170269152A1 ELECTROMIGRATION WEAROUT DETECTION CIRCUITS Public/Granted day:2017-09-21
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