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Analog Integrated Circuits and Signal Processing

, Volume 101, Issue 3, pp 555–564 | Cite as

Dynamic current-boosting based FVF for output-capacitor-less LDO regulator

  • Fatemeh Abdi
  • Yasin Bastan
  • Parviz AmiriEmail author
Article
  • 71 Downloads

Abstract

A flipped voltage follower structure based on a dynamic current boosting technique is proposed which enables the fast-transient behavior. It is applied to an output capacitor-less low-dropout (LDO) regulator to improve the output transient response and reduce the over/undershoots of the output voltage when the load current or the input voltage is suddenly changed. The proposed low-dropout regulator is simulated in 0.18 μm CMOS technology, which the output voltage is regulated at 1 V with a dropout voltage of about 114 mV. The output voltage over/undershoot amplitudes of the proposed LDO are obtained in 99.52/551.8 mV with the settling time of fewer than 1.3 μs for the load current changes from 0.1 to 100 mA with 200 ns rise/fall times.

Keywords

Capacitor-less low-dropout regulator Flipped voltage follower Dynamic current-boosting Fast transient response CMOS 

Notes

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Microelectronics and Industrial Equipment Research Laboratory, Electrical Engineering Faculty/Electronics DepartmentShahid Rajaee Teacher Training University (SRTTU)Lavizan, TehranIran

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