University of Hertfordshire

Diagnosis of power switches with power-distribution-network consideration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • Vasileios Tenentes
  • Daniele Rossi
  • Saqib Khursheed
  • Bashir M. Al-Hashimi
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Original languageEnglish
Title of host publicationProceedings - 2015 20th IEEE European Test Symposium, ETS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479976034
DOIs
Publication statusPublished - 29 Jun 2015
Event2015 20th IEEE European Test Symposium, ETS 2014 - Cluj-Napoca
Duration: 25 May 201529 May 2015

Conference

Conference2015 20th IEEE European Test Symposium, ETS 2014
CityCluj-Napoca
Period25/05/1529/05/15

Abstract

This paper examines diagnosis of power switches when the power-distribution-network (PDN) is considered as a high resolution distributed electrical model. The analysis shows that for a diagnosis method to perform high diagnosis accuracy and resolution, the distributed nature of PDN should not be simplified by a lumped model. For this reason, a PDN-aware diagnosis method for power switches fault grading is proposed. The proposed method utilizes a novel signature generation design-for-testability (DFT) unit, the signatures of which are processed by a novel diagnosis algorithm that grades the magnitude of faults. Through simulations of physical layout SPICE models, we explore the trade-offs of the proposed method between diagnosis accuracy and diagnosis resolution against area overhead and we show that 100% diagnosis accuracy and up to 98% diagnosis resolution can be achieved with negligible cost.

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