Load current adaptive control of a monolithic CMOS DC/DC converter for dynamic power management

Wei Chi Su*, Ying-Yu Tzou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper presents the design of a monolithic current-mode CMOS DC/DC converter with integrated power switches and an on-chip passive adaptive controller with the sensed average inductor current. The sensed switched current, combined with the integration of inductor voltage, and a voltage-controlled floating resistor, can be used for the adaptive control of a CMOS DC/DC converter. The nonlinear carrier control can adjust carrier according to input voltage to reduce the input disturbance. The proposed control scheme has been design and simulation verified based on the TSMC 0.35μm technology. The designed CMOS DC/DC switching regulator is based on a rated output current of 500mA with an adjustable output voltage from 1.0V to 1.8V. Simulation results shows the proposed adaptive control scheme can achieve a fast dynamic power on transient response as well as a robust voltage regulation against large loading current variation.

Original languageEnglish
Title of host publicationPESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Pages370-376
Number of pages7
DOIs
StatePublished - 1 Dec 2007
EventPESC 07 - IEEE 38th Annual Power Electronics Specialists Conference - Orlando, FL, United States
Duration: 17 Jun 200721 Jun 2007

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
ISSN (Print)0275-9306

Conference

ConferencePESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
CountryUnited States
CityOrlando, FL
Period17/06/0721/06/07

Keywords

  • CMOS DC/DC converters
  • Dynamic power management
  • Fast dynamic response
  • Load current adaptive control
  • Nonlinear carrier
  • Synchronous buck regulator

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