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Full-chip analysis of unintentional forward biased diodes

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3 Author(s)
Amir Grinshpon ; Freescale Semiconductor ; Adam Segoli Schubert ; Ziyang Lu

Multi-power domains have become a common practice in modern VLSI designs. As the number of different operational modes and different power schemes increases, the problem of unintentional forward-biased diodes, which cause power loss and chip malfunction, has become a critical issue. In this paper, we present a novel static analysis solution to detect unintentional forward biased diodes during full-chip verification, using a device-level vector-less approach. The key feature of our method is a hierarchical Multi-Stage Filtering algorithm, which drastically reduces the runtime. Our method has been extensively tested and verified in production flows.

Published in:

Quality Electronic Design (ISQED), 2011 12th International Symposium on

Date of Conference:

14-16 March 2011