On-chip compensated error amplifier for fast transient DC-DC converters

  • Hong Wei Huang*
  • , Hsin Hsin Ho
  • , Chia Jung Chang
  • , Ke Horng Chen
  • , Sy Yen Kuo
  • *Corresponding author for this work

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

9 Scopus citations

Abstract

A novel on-chip compensated error amplifier for fast transient response of DC-DC converters is presented in this paper. The error amplifier uses on-chip current-mode Miller capacitor to replace a large off-chip capacitor. We only use three transistors and one voltage follower to implement this novel on-chip compensated error amplifier for fast transient DC-DC converters. Owing to the current-mode implementation, we can redirect the equivalent current to charge or discharge the output capacitor of the error amplifier to improve the transient response time. Not only onchip compensated error amplifier is implemented without off-chip components and I/O pins, but also it can have fast transient response. The analytic equations guarantee the compensated correctness of the proposed circuit, With the proposed error amplifier, the transient response of DC-DC converters is improved significantly. Simulation results demonstrate the stability and the fast transient response of the DC-DC converters.

Original languageEnglish
Title of host publication2006 IEEE International Conference on Electro Information Technology
Pages103-108
Number of pages6
DOIs
StatePublished - 2006
Externally publishedYes
Event2006 IEEE International Conference on Electro Information Technology - East Lansing, MI, United States
Duration: 07 05 200610 05 2006

Publication series

Name2006 IEEE International Conference on Electro Information Technology

Conference

Conference2006 IEEE International Conference on Electro Information Technology
Country/TerritoryUnited States
CityEast Lansing, MI
Period07/05/0610/05/06

Keywords

  • Current-mode DC-DC converter
  • Error amplifier
  • Fast transient response
  • On-chip compensation

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