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A fast decoupling capacitor budgeting algorithm for robust on-chip power delivery

By Jingjing Fu, Zuying Luo, Xianlong Hong, Yici Cail, Sheldon X. -d. Tan and Zhu Pan


Abstract-In this paper, we present an efficient method to budget on-chip decoupling capacitors (decaps) to optimize power delivery networks in an area efficient way. Our algorithm is based on an efficient gradient-based non-linear programming method for searching the solution. Our contributions are an efficient gradient computation method (time-domain merged adjoint network) and a novel equivalent circuit modeling technique to speed up the optimization process. Experimental results demonstrate that the algorithm is capable of efficiently optimizing very large scale P/G networks.

Year: 2004
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