A 900mA 93% efficient 50μA quiescent current fixed frequency hysteretic buck converter using a highly digital hybrid voltage- and current-mode control

Qadeer Khan, Amr Elshazly, Sachin Rao, Rajesh Inti, Pavan Kumar Hanumolu

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

Abstract

A hysteretic buck converter employs a hybrid voltage/current mode control to regulate output voltage and switching frequency independently. Fabricated in a 130nm CMOS process, the prototype consumes only 50μA quiescent current and operates at a constant switching frequency of 1MHz over a wide range of output voltages (0.7-to-1.8V) and inductor values (1-to-5μH) with a peak efficiency of 93%. The output ripple and the settling time of the converter are less than ±2.5mV and 10μs, respectively.

Original languageEnglish (US)
Title of host publication2012 Symposium on VLSI Circuits, VLSIC 2012
Pages182-183
Number of pages2
DOIs
StatePublished - Sep 28 2012
Externally publishedYes
Event2012 Symposium on VLSI Circuits, VLSIC 2012 - Honolulu, HI, United States
Duration: Jun 13 2012Jun 15 2012

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers

Other

Other2012 Symposium on VLSI Circuits, VLSIC 2012
CountryUnited States
CityHonolulu, HI
Period6/13/126/15/12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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