• DocumentCode
    3682309
  • Title

    A 0.48mm2 5μW-10mW indoor/outdoor PV energy-harvesting management unit in a 65nm SoC based on a single bidirectional multi-gain/multi-mode switched-cap converter with supercap storage

  • Author

    David Bol;El Hafed Boufouss;Denis Flandre;Julien De Vos

  • Author_Institution
    ICTEAM institute, Université
  • fYear
    2015
  • Firstpage
    241
  • Lastpage
    244
  • Abstract
    We propose an energy-harvesting management unit to interface a PV harvester with a storage supercapacitor while generating a 1V regulated supply VREG. Direct connection between stacked PV cells and VREG allows virtual 100% conversion efficiency between the harvester and the supplied circuits, while the use of a single bidirectional switched-capacitor DC/DC converter between VREG and the supercap allows 0.48mm2 area in a 65nm IoT vision SoC with a single external filtering capacitor. To cope with the 0-3V charge-dependent supercap voltage range and the wide 5μW-10mW harvester/load power range, the converter features adaptive selection between multiple voltage gains and power modes.
  • Keywords
    "Switches","Voltage control","Organizations","CMOS integrated circuits","Switching circuits","Standards organizations","Supercapacitors"
  • Publisher
    ieee
  • Conference_Titel
    European Solid-State Circuits Conference (ESSCIRC), ESSCIRC 2015 - 41st
  • ISSN
    1930-8833
  • Print_ISBN
    978-1-4673-7470-5
  • Type

    conf

  • DOI
    10.1109/ESSCIRC.2015.7313872
  • Filename
    7313872
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3682309