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Loop Bandwidth Extension Technique for FVF-Based Low Drop-Out Regulator

  • Shao Ku Kao*
  • , Xu Sheng Lin
  • *Corresponding author for this work
  • Chang Gung University

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

Abstract

This paper proposes an output capacitor-free analog low-dropout regulator (LDO) suitable for memory circuits. The circuit architecture adopts a flipped voltage follower (FVF) configuration. The local loop incorporates super source follower (SSF) and gain boosting stage (GBS) circuits to extend loop bandwidth and enhance loop gain. This LDO is implemented in a 90nm process. In simulation result, with an input voltage of 1.05V, it maintains an output voltage of 1V and supports output load currents ranging from 100uA to 40mA. Under load switching conditions with a load step time of 10ns, the undershoot voltage is 140mV, settling time is 550ns, and quiescent current under heavy load conditions is 45uA.

Original languageEnglish
Title of host publication2025 1st International Conference on Consumer Technology, ICCT-Pacific 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331504120
DOIs
StatePublished - 2025
Event1st International Conference on Consumer Technology, ICCT-Pacific 2025 - Matsue, Japan
Duration: 29 03 202531 03 2025

Publication series

Name2025 1st International Conference on Consumer Technology, ICCT-Pacific 2025

Conference

Conference1st International Conference on Consumer Technology, ICCT-Pacific 2025
Country/TerritoryJapan
CityMatsue
Period29/03/2531/03/25

Bibliographical note

Publisher Copyright:
© 2025 IEEE.

Keywords

  • Flipped voltage follower (FVF)
  • Low-dropout regulator (LDO)
  • Super source follower (SSF)
  • Transient response

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