Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling

Jungmoon Kim, Hyunho Chu, Chulwoo Kim

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

3 Citations (Scopus)

Abstract

This paper describes an integrated current-mode buck converter with reliable hysteretic mode controller and modulators for fast dynamic voltage scaling (DVS). The proposed mode controller and modulators enable the DC-DC buck converter to perform its smooth mode transitions at optimal points. The continuous current-limiting and DCM controls drive the DVS to track the reference at the maximum speed in both PWM and PFM modes. The DC-DC buck converter is implemented in a 90-nm 3.3V CMOS process. The maximum efficiency reaches 94.5%. The hysteretic mode controller keeps its efficiency always at more than 75% for any load conditions. During a mode transition, the output voltage has no overshoots, and it can track the reference voltage instantly.

Original languageEnglish
Title of host publication2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09
Pages941-944
Number of pages4
DOIs
Publication statusPublished - 2009
Event2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09 - Cancun, Mexico
Duration: 2009 Aug 22009 Aug 5

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Other

Other2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09
CountryMexico
CityCancun
Period09/8/209/8/5

ASJC Scopus subject areas

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

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    Kim, J., Chu, H., & Kim, C. (2009). Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling. In 2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09 (pp. 941-944). [5235921] (Midwest Symposium on Circuits and Systems). https://doi.org/10.1109/MWSCAS.2009.5235921