NDLI: Algorithm for achieving minimum energy consumption in CMOS circuits using multiple supply and threshold voltages at the module level

Content Provider	IEEE Xplore Digital Library
Author	Dhillon, Y.S. Diril, A.U. Chatterjee, A. Hsien-Hsin Sean Lee
Copyright Year	2003
Description	Author affiliation: Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Dhillon, Y.S.; Diril, A.U.; Chatterjee, A.; Hsien-Hsin Sean Lee)
Abstract	This paper proposes an optimum methodology for assigning supply and threshold voltages to modules in a CMOS circuit such that the overall energy consumption is minimized for a given delay constraint. The modules of the circuit should have large enough gate depths such that the delay and energy penalties of the level shifters connecting them are negligible. Both static and dynamic energy are considered in the optimization. Energy savings of up to 48% have been achieved on various example circuits. The first step in the optimization finds optimum supply and threshold voltages for each module in the circuit. If the circuit has a large number of modules, this step might yield a correspondingly large number of different supply and threshold voltages for minimum energy consumption. Since having a large number of different supply and threshold voltages on an IC is not feasible in current technologies, an additional step clusters the multiple voltages obtained from the first step into a fixed number of supply and threshold voltages (for example, 2 different supply voltages and 2 different threshold voltages). In addition to the application of this method to circuit optimization, it can also be applied to a wide range of problems with delay constraints, such as software tasks running on a dynamically variable V/sub DD/ and V/sub th/ processor.
Sponsorship	IEEE IEEE Circuits and Syst. Soc. IEEE Comput. Soc. ACM Special Interest Group on Design Automation
Starting Page	693
Ending Page	700
File Size	523970
Page Count	8
File Format	PDF
ISBN	1581137621
DOI	10.1109/ICCAD.2003.1257885
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-11-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Energy consumption Threshold voltage Delay Dynamic voltage scaling Circuit optimization Circuit testing Iterative algorithms DH-HEMTs Power engineering and energy CMOS technology
Content Type	Text
Resource Type	Article

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