Proportional compensated buck converter with a differential-in differential-out (DIDO) error amplifier and load regulation enhancement (LRE) mechanism

Yu Huei Lee*, Kuan Yu Chu, Chun Jen Shih, Ke-Horng Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A differential-in differential-out error amplifier and a load regulation enhancement mechanism are proposed in the buck converter that aims to improve load regulation and noise immunity. By using the proportional compensator in the proposed converter, there is no need of external compensation components in this design. As a result, a compact-size and high-performance dc-dc buck converter can be guaranteed. Experimental results show that load regulation can be improved from 0.5 to 0.025 mV/mA. The test chip was fabricated by 0.25 μm CMOS process and occupied 1.65mm 2 active silicon area.

Original languageEnglish
Article number6061965
Pages (from-to)2426-2436
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume27
Issue number5
DOIs
StatePublished - 15 Mar 2012

Keywords

  • Current-mode operation
  • dc-dc converter
  • differential-in differential-out (DIDO) amplifier
  • load regulation
  • system compensation

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