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Power/Ground Network Optimization Considering Decap Leakage Currents

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5 Author(s)
Yici Cai ; Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing ; Jingjing Fu ; Xianlong Hong ; Tan, S.X.
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In this brief, the authors take a first look at the leakage effects of decaps in power/ground (P/G) grid optimization. Through the use of an approximate leakage current model, it is revealed that simple usage of the leakage model in traditional optimization methods cannot help in reducing noises on P/G grids, and it even hurts power consumption due to overadded decaps. Therefore, it is necessary to develop an efficient method to budget decaps when leakage effect is considered. Here, a new two-stage approach to solve this problem is proposed. Experimental results demonstrate the effectiveness of our new method

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:53 ,  Issue: 10 )