A High-Efficiency Switched-Capacitance HTFET Charge Pump for Low-Input-Voltage Applications

Unsuk Heo, Xueqing Li, Huichu Liu, Sumeet Gupta, Suman Datta, Vijaykrishnan Narayanan

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

16 Scopus citations

Abstract

This paper presents a high-efficiency switched capacitance charge pump in 20 nm III-V heterojunction tunnel field-effect transistor (HTFET) technology for low-input-voltage applications. The steep-slope and low-threshold HTFET device characteristics are utilized to extend the input voltage range to below 0.20 V. Meanwhile, the uni-directional current conduction is utilized to reduce the reverse energy loss and to simplify the non-overlapping phase controlling. Furthermore, with unidirectional current conduction, an improved cross-coupled charge pump topology is proposed for higher voltage output and PCE. Simulation results show that the proposed HTFET charge pump with a 1.0 kΩ resistive load achieves 90.4% and 91.4% power conversion efficiency, and 0.37 V and 0.57 V DC output voltage, when the input voltage is 0.20 V and 0.30 V, respectively.

Original languageEnglish (US)
Title of host publicationProceedings of the 28th International Conference on VLSI Design, VLSID 2015 - held concurrently with the 14th International Conference on Embedded Systems
PublisherIEEE Computer Society
Pages304-309
Number of pages6
EditionFebruary
ISBN (Electronic)9781479966585
DOIs
StatePublished - Feb 4 2015
Event28th International Conference on VLSI Design, VLSID 2015 - held concurrently with the 14th International Conference on Embedded Systems - Bangalore, India
Duration: Jan 3 2015Jan 7 2015

Publication series

NameProceedings of the IEEE International Conference on VLSI Design
NumberFebruary
Volume2015-February
ISSN (Print)1063-9667

Other

Other28th International Conference on VLSI Design, VLSID 2015 - held concurrently with the 14th International Conference on Embedded Systems
Country/TerritoryIndia
CityBangalore
Period1/3/151/7/15

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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