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Impact of self-heating effect on long-term reliability and performance degradation in CMOS circuits

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3 Author(s)
Semenov, O. ; Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Ont., Canada ; Vassighi, A. ; Sachdev, M.

As the technology feature size is reduced, the thermal management of high-performance very large scale integrations (VLSIs) becomes an important design issue. The self-heating effect and nonuniform power distribution in VLSIs lead to performance and long-term reliability degradation. In this paper, we analyze the self-heating effect in high-performance sub-0.18-μm bulk and silicon-on-insulator (SOI) CMOS circuits using fast transient quasi-dc thermal simulations. The impact of the self-heating effect and technology scaling on the metallization lifetime and the gate oxide time-to-breakdown (TBD) reduction are also investigated. Based on simulation results, an optimized clock-driver design is proposed. The proposed layout reduces the hot-spot temperature by 15°C and by 7°C in 0.09-μm SOI and bulk CMOS technologies, respectively.

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Device and Materials Reliability, IEEE Transactions on  (Volume:6 ,  Issue: 1 )