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A study of adaptive circuits for an energy harvesting power supply system

Research Project

Project/Area Number 25630140
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Electron device/Electronic equipment
Research InstitutionTokyo Institute of Technology

Principal Investigator

MIYAHARA Masaya  東京工業大学, 理工学研究科, 助教 (90551705)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsエネルギーハーベスティング / アナログ・デジタル変換器 / DC-DCコンバータ / 集積回路 / 低消費電力
Outline of Final Research Achievements

We have developed an energy harvesting power supply system which can be adapted to the environmental change for realizing maximum power point tracking (MPPT).
The proposed technique divides a DC-DC converter into an energy harvesting block and a load voltage stabilizer for realizing MPPT and stable supply at the same time regardless of the load fluctuations. As a result, it was confirmed that the proposed technique can control within a 5% to the maximum power point.
We have also developed an analog to digital convertor (ADC) used for monitoring the power supply system. The proposed ADC demonstrates an effective number bit of 9.1 with 10kHz sampling rate and 0.6V power supply. At this conversion rate, it consumes only 0.1μW resulting in a FoM of 19.5fJ/conv.-step.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (1 results)

All 2015

All Presentation (1 results)

  • [Presentation] A 10-b, 18.7 fJ/step Charge-Redistribution SAR ADC2015

    • Author(s)
      Zhijie Chen
    • Organizer
      ISSCC 2015 Student Research Preview
    • Place of Presentation
      San Francisco
    • Year and Date
      2015-02-22
    • Related Report
      2014 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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