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Energy Consumption Evaluation of Flip-Flops for Dynamic Voltage Scaling Systems and Circulating-Temperature Applications

Shao, Minghe (2021) Energy Consumption Evaluation of Flip-Flops for Dynamic Voltage Scaling Systems and Circulating-Temperature Applications. Master's Thesis, University of Pittsburgh. (Unpublished)

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CMOS circuit technology has developed with a help of transistor scaling. In past decades, previous studies found that operating environment of digital system affects circuit performance significantly. For example, extensive research has been performed to learn temperature dependency of CMOS circuits and optimize their performance at given temperature. Adaptive voltage scaling (AVS) is one of the important techniques, responses to operating temperature and dynamically change supply voltage of digital circuits to optimize circuit performance. AVS can enable energy optimization for a system experiencing significant temperature variation, including a space satellite. However, inappropriate AVS results in functional failure in an extreme condition, which can cause substantial problem for a critical mission. This work proposes technique to evaluate recently published flip-flops considering their power-delay product (PDP) and reliability for an AVS system operating under circulating temperature. The 8 flip-flops are evaluated under different temperature and supply voltage. Their PDPs are compared assuming that temperature changes linearly. Functional reliability is quantitatively evaluated using corner and Monte-Carlo simulations, and failure mechanisms of flip-flops are discussed as well.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Shao, Mingheminghe.shao@pitt.edumis223
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Thesis AdvisorLee,
Committee ChairLee,
Committee MemberDickerson,
Committee MemberKubendran,
Date: 13 June 2021
Date Type: Publication
Defense Date: 5 March 2021
Approval Date: 13 June 2021
Submission Date: 24 March 2021
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 63
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: CMOS; Flip-flop; Energy Consumption; Circulating-Temperature; Adaptive Voltage Scaling (AVS)
Date Deposited: 13 Jun 2021 18:38
Last Modified: 13 Jun 2021 18:39


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