A 82.5% power efficiency at 1.2 mW buck converter with sleep control

Chung Hwan Son, Sangjin Byun

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This paper presents a DC-DC buck converter which uses a sleep control to improve the power efficiency in a few mW light load condition. The sleep control turns off analog controller building blocks to reduce the static power losses during the off-duty period of pulse width modulation. For verification, a buck converter has been implemented in a 0.18 μm CMOS process. The power efficiency has been improved from 76.7% to 82.5% with a 1.2 mW load. The maximum power efficiency is 95% with a 9 mW load.

Original languageEnglish
Pages (from-to)842-846
Number of pages5
JournalJournal of Semiconductor Technology and Science
Volume16
Issue number6
DOIs
StatePublished - Dec 2016

Keywords

  • Buck converter
  • CMOS integrated circuits
  • Current sensor
  • Sleep control

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