Benefits and Costs of Power-Gating Technique
ICCD '05 Proceedings of the 2005 International Conference on Computer Design
Power Gating with Multiple Sleep Modes
ISQED '06 Proceedings of the 7th International Symposium on Quality Electronic Design
Understanding voltage variations in chip multiprocessors using a distributed power-delivery network
Proceedings of the conference on Design, automation and test in Europe
Effective radii of on-chip decoupling capacitors
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Decoupling capacitance allocation and its application to power-supply noise-aware floorplanning
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Optimal decoupling capacitor sizing and placement for standard-cell layout designs
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Design analysis of IC power delivery
Proceedings of the International Conference on Computer-Aided Design
Leveraging rule-based designs for automatic power domain partitioning
Proceedings of the International Conference on Computer-Aided Design
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Power gating is essential for controlling leakage power dissipation of modern chip designs. However, power gating introduces unique power delivery integrity issues and tradeoffs between switching and rush current (wake-up) supply noises. In addition, in power-gated power delivery networks (PDNs), the amount of power saving intrinsically trades off with power integrity. In this paper, we propose systemic decoupling capacitance optimization strategies that optimally balance between switching and rush current noises, and tradeoff between power integrity and wake-up time, hence power saving. Furthermore, we propose a novel re-routable decoupling capacitance concept to break the tight interaction between power integrity and power saving, providing further improved tradeoffs between the two. Our design strategies have been implemented in a simulation-based optimization flow and the conducted experimental results have demonstrated significant improvement on leakage power saving through the presented techniques.