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Sleep signal controlled footless domino circuit for low leakage current

Amit Kumar Pandey (Department of Applied Science, Rajkiya Engineering College, Ambedkar Nagar, India)
Tarun Kumar Gupta (Department of Electronics and Communication, Maulana Azad National Institute of Technology, Bhopal, India)
Pawan Kumar Verma (Department of Electronics and Communication, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar, India)

Circuit World

ISSN: 0305-6120

Article publication date: 8 March 2018

Issue publication date: 19 April 2018

95

Abstract

Purpose

This paper aims to propose a new sleep signal controlled footless domino circuit for reducing the subthreshold and gate oxide leakage currents.

Design/methodology/approach

In the proposed circuit, a P channel MOSFET (PMOS) sleep switch transistor is inserted between the power supply and the output node. The sleep transistor, the source of the pull-down network, and the source of the N channel MOSFET (NMOS) transistor of the output inverter are controlled by this additional sleep signal to place the footless domino circuit in a low leakage state.

Findings

The authors simulate the proposed circuit by using HSPICE in 45-nm CMOS technology for OR and AND logic gates such as OR2, OR4, OR8, AND2 and AND4 at 25°C and 110°C. The proposed circuit reduces leakage power consumption as compared to the existing circuits.

Originality/value

The proposed circuit significantly reduces the total leakage power consumption up to 99.41 and 99.51 per cent as compared to the standard dual-threshold voltage footless domino circuits at 25°C and 110°C, respectively, and up to 93.79 and 97.98 per cent as compared to the sleep control techniques at 25°C and 110°C, respectively. Similarly, the proposed circuit reduces the active power consumption up to 26.76 and 86.25 per cent as compared to the standard dual-threshold voltage and sleep control techniques footless domino circuits at 25°C and 110°C, respectively.

Keywords

Citation

Pandey, A.K., Gupta, T.K. and Verma, P.K. (2018), "Sleep signal controlled footless domino circuit for low leakage current", Circuit World, Vol. 44 No. 2, pp. 87-98. https://doi.org/10.1108/CW-06-2017-0030

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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