Semicustom design methodology of power gated circuits for low leakage applications

The application of power gating to cell-based semicustom design typically calls for customized cell libraries, which incurs substantial engineering efforts. In this brief, a semicustom design methodology for power gated circuits that allows unmodified conventional standard-cell elements is proposed. In particular, a new power network architecture is proposed for cell-based power gating circuits. The impact of body bias on current switch design and the layout method of current switch for flexible placement are investigated. The circuit elements that supplement cell-based power gating design are then discussed, including output interface circuits and state retention flip-flops. The proposed methodology is applied to ISCAS benchmark circuits and to a commercial Viterbi decoder with 0.18-mu m CMOS technology.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2007-06
Language
ENG
Citation

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v.54, no.6, pp.512 - 516

ISSN
1549-7747
DOI
10.1109/TCSII.2007.894414
URI
http://hdl.handle.net/10203/1049
Appears in Collection
EE-Journal Papers(저널논문)
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