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Standby power optimization via transistor sizing and dual threshold voltage assignment

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2 Author(s)
Ketkar, M. ; Dept. of Electr. & Comput. Eng., Minnesota Univ., USA ; Sapatnekar, S.S.

This paper presents a novel enumerative approach, with provable and efficient pruning techniques, for dual threshold voltage (Vt) assignment at the transistor level. Since the use of low Vt may entail a substantial increase in leakage power, we formulate the problem as one of combined optimization for leakage-delay tradeoffs under Vt optimization and sizing. Based on an analysis of the effects of these two transforms on the delay and leakage, we justify a two-step procedure for performing this optimization. Results are presented on the ISCAS85 benchmark suite favorably comparing our approach with an existing sensitivity-based optimizer.

Published in:

Computer Aided Design, 2002. ICCAD 2002. IEEE/ACM International Conference on

Date of Conference:

10-14 Nov. 2002

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