An output capacitor-less low dropout regulator with quick-responding circuits

Chunxu Zhang, Jie Mei, Hirofumi Shinohara, Tsutomu Yoshihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An output capacitor-less low dropout regulator with three quick-responding (QR) loops is implemented in 0.18 μm CMOS technology, featuring low sensitivity with changes in input voltage and load current. The proposed capacitor-less LDO has high stability for a current load from 0 to 100 mA and a capacitor load of 100 pF while the dropout voltage is 200 mV. A buffer is used to improve loop gain. The line regulation is 0.95 mV/V and the load regulation is 20 μV/mA. The quick-responding loops can effectively reduce the overshoot and undershoot. When the load current switch between 0 and 100 mA with 1 μs edge time, the maximum overshoot and undershoot are 36.13 mV and 36.81 mV under a 1.2 V supply voltage. And setting time is about 1.8 μs.

Original languageEnglish
Title of host publicationISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages51-52
Number of pages2
ISBN (Print)9781467393089
DOIs
Publication statusPublished - 2016 Feb 8
Event12th International SoC Design Conference, ISOCC 2015 - Gyeongju, Korea, Republic of
Duration: 2015 Nov 22015 Nov 5

Other

Other12th International SoC Design Conference, ISOCC 2015
CountryKorea, Republic of
CityGyeongju
Period15/11/215/11/5

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Keywords

  • cap-less low dropout regulator
  • high slew rate
  • high stability
  • small undershoot
  • three quick responding loops

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Zhang, C., Mei, J., Shinohara, H., & Yoshihara, T. (2016). An output capacitor-less low dropout regulator with quick-responding circuits. In ISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE) (pp. 51-52). [7401635] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISOCC.2015.7401635