Power MOSFET array in LDO regulator compensation

Yung Hsin Lin*, Kuo Lin Zheng, Ke-Horng Chen

*Corresponding author for this work

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

Abstract

This paper proposes an equivalent power MOSFET array for implementing smooth pole tracking in Low-dropout (LDO) regulator compensation. As we know, turning on/off the power transistors in proper sequence alleviates the ground bounce effects. Thus, power MOSFET array with suitable turn-on/off sequence is presented to suppress the output ripples in case of load variations. Besides, load dependent power MOSFET array also provides a smooth pole tracking in order to effectively compensate LDO regulator. Experimental results demonstrate good performance of fast and smooth pole tracking. Compared to conventional pole tracking technique, the new technique has low output ripples and fast response time. This technique is a good solution for RF SoC applications.

Original languageEnglish
Title of host publication2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference Proceedings
Pages554-557
Number of pages4
DOIs
StatePublished - 1 Dec 2007
Event2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference - Montreal, QC, Canada
Duration: 5 Aug 20078 Aug 2007

Publication series

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

Conference

Conference2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference
CountryCanada
CityMontreal, QC
Period5/08/078/08/07

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