A Forward/Reverse Body Bias Generator with Wide Supply-Range down to Threshold Voltage

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Author(s)

Abstract

A forward/reverse body bias generator (BBG) which operates under wide supply-range is proposed. Fine-grained body biasing (FGBB) is effective to reduce variability and increase energy efficiency on digital LSIs. Since FGBB requires a number of BBGs to be implemented, simple design is preferred. We propose a BBG with charge pumps for reverse body bias and the BBG operates under wide supply-range from 0.5 V to 1.2 V. Layout of the BBG was designed in a cell-based flow with an AES core and fabricated in a 65 nm CMOS process. Area of the AES core is 0.22 mm<SUP>2</SUP> and area overhead of the BBG is 2.3%. Demonstration of the AES core shows a successful operation with the supply voltage from 0.5 V to 1.2 V which enables the reduction of power dissipation, for example, of 17% at 400 MHz operation.

Journal

  • IEICE Transactions on Electronics

    IEICE Transactions on Electronics E98.C(6), 504-511, 2015

    Institute of Electronics, Information and Communication Engineers(IEICE)

Codes

  • NII Article ID (NAID)
    130005072389
  • NII NACSIS-CAT ID (NCID)
    AA10826283
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    0916-8524
  • Data Source
    IR  J-STAGE 
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