National Tsing Hua University Institutional Repository:Analysis and optimization of power-gated ICs with multiple power gating configurations
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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 會議論文  >  Analysis and optimization of power-gated ICs with multiple power gating configurations


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    题名: Analysis and optimization of power-gated ICs with multiple power gating configurations
    作者: Aida Todri
    Malgorzata Marek-Sadowska
    Shih-Chieh Chang
    日期: 2007
    出版者: Institute of Electrical and Electronics Engineers Inc
    关键词: Power-Gated
    electromigration
    IR
    摘要: Power gating is an efficient technique for reducing leakage power in electronic devices by disconnecting blocks idle for long periods of time from the power supply. Disconnecting gated blocks causes changes in densities of currents flowing through a grid. Even in DC conditions, current densities in some grid branches may increase for some gating configurations to the extent of violating electromigration (EM) constraints. The existing DC methods for grid sizing optimize the grid area under voltage drop (IR) and EM constraints for one configuration of circuit blocks connected to the grid. We show that these methods cannot be directly applied for optimizing power-gated grids. We analyze the effects of EM and IR voltage drop in power grids with multiple power gating configurations. Based on our analyses, we develop a grid sizing algorithm to satisfy all reliability constraints for all feasible gating configurations. Our experimental results indicate that a grid initially sized for all blocks present may be modified to fulfill EM and IR constraints for multiple gating schedules with only a small area increase.
    相関连結: http://webservices.ieee.org/pindex_basic.html
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/13858
    显示于类别:[資訊工程學系] 會議論文
    [積體電路設計技術研發中心] 會議論文

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