An energy-efficient level converter with high thermal variation immunity for sub-threshold to super-threshold operation

Mei Wei Chen*, Ming Hung Chang, Yuan Hua Chu, Wei Hwang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

A multiple supply voltage scheme is an emerging approach to reduce power dissipation. The scheme requires a level converter as a bridge for different voltage domains. Conventional level converters fail to work in sub-threshold region due to the pull-down devices and the pull-up devices operate in sub-threshold and super-threshold region respectively. By employing diode-connected PMOS transistors, multiple-threshold-voltage CMOS (MTCMOS), and stack leakage reduction techniques, the proposed cross-coupled level converter achieves small propagation delay, low power consumption, and best power-delay-product (PDP) performance. Also, the reverse short channel effect is utilized to provide our level converter better process/thermal variation immunity. We also propose a dual edge-triggered explicit-pulsed level-converting flip flop (LCFF) concept combining a DCVSPG latch and our level converter. The proposed cross-coupled level converter is designed using TSMC 65nm bulk CMOS technology. It functions correctly across all process corners for a wide input voltage range, from 150mV to 1V. The level converter has a propagation delay of 52ns and a power dissipation of 21nW when the input voltage is 150mV.

Original languageEnglish
Title of host publicationProceedings - IEEE International SOC Conference, SOCC 2012
Pages5-10
Number of pages6
DOIs
StatePublished - 1 Dec 2012
Event25th IEEE International System-on-Chip Conference, SOCC 2012 - Niagara Falls, NY, United States
Duration: 12 Sep 201214 Sep 2012

Publication series

NameInternational System on Chip Conference
ISSN (Print)2164-1676
ISSN (Electronic)2164-1706

Conference

Conference25th IEEE International System-on-Chip Conference, SOCC 2012
CountryUnited States
CityNiagara Falls, NY
Period12/09/1214/09/12

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  • Cite this

    Chen, M. W., Chang, M. H., Chu, Y. H., & Hwang, W. (2012). An energy-efficient level converter with high thermal variation immunity for sub-threshold to super-threshold operation. In Proceedings - IEEE International SOC Conference, SOCC 2012 (pp. 5-10). [6398368] (International System on Chip Conference). https://doi.org/10.1109/SOCC.2012.6398368