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Wakeup time is an important overhead that must be determined for effective power gating, particularly in logic clusters that undergo frequent mode transitions for run-time leakage power reduction. In this paper, a semiempirical model for virtual supply voltage in terms of basic parameters of the power-gated circuit is presented. Hence a closed-form expression for estimation of wakeup time of a power-gated...
Power gating is one of the most effective techniques to reduce the growing leakage power in the CMOS integrated circuits. However, during the turn on progress of the power gated circuits, ground bounce effect appears which will cause voltage fluctuations on the ground line within the chip through the parasitic parameters of package. In this paper, an analytical model is proposed to calculate the voltage...
Device aging, which causes significant loss on circuit performance and lifetime, has been a main factor in reliability degradation of nanoscale designs. Aggressive technology scaling trends, such as thinner gate oxide without proportional downscaling of supply voltage, necessitate an aging-aware analysis and optimization flow in the early design stages. Since PMOS sleep transistors in power-gated...
Multi-core architecture has emerged as the primary architectural choice to achieve power-efficient computing in microprocessors and SoCs. Power gating is indispensable for system power and thermal management and well suited for multi-core architectures. However, checking the power integrity (such as electromigration and voltage drop) of large gated power delivery networks (PDNs) presents a significant...
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