Design of low-power, fast-transient-response, capacitor-less low-dropout regulator for mobile applications

Junil Moon, Jinhoon Hyun, Soo-Won Kim

Research output: Contribution to journalLetter

Abstract

This paper presents a capacitor-less low-dropout (LDO) regulator for on-chip mobile applications. An additional push-pull current with a capacitive coupling circuit is proposed to significantly enhance the transient response of the LDO regulator. The proposed LDO regulator can deliver an output current of 100 mA with a minimum dropout voltage of 0.4 V. The circuit was modeled and implemented in a 0.35-µm CMOS process with a die area of 0.22 mm2. The experimental results show that the LDO regulator can be recovered within 0.5 µs at a voltage spike less than 90 mV.

Original languageEnglish
Article number20160882
JournalIEICE Electronics Express
Volume13
Issue number23
DOIs
Publication statusPublished - 2016

Fingerprint

dropouts
regulators
transient response
Transient analysis
capacitors
Capacitors
Coupled circuits
Electric potential
coupling circuits
Networks (circuits)
electric potential
spikes
CMOS
chips
output

Keywords

  • Capacitor-less low-dropout (LDO) regulator
  • Regulator
  • System-on-chip
  • Transient enhancement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Design of low-power, fast-transient-response, capacitor-less low-dropout regulator for mobile applications. / Moon, Junil; Hyun, Jinhoon; Kim, Soo-Won.

In: IEICE Electronics Express, Vol. 13, No. 23, 20160882, 2016.

Research output: Contribution to journalLetter

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AB - This paper presents a capacitor-less low-dropout (LDO) regulator for on-chip mobile applications. An additional push-pull current with a capacitive coupling circuit is proposed to significantly enhance the transient response of the LDO regulator. The proposed LDO regulator can deliver an output current of 100 mA with a minimum dropout voltage of 0.4 V. The circuit was modeled and implemented in a 0.35-µm CMOS process with a die area of 0.22 mm2. The experimental results show that the LDO regulator can be recovered within 0.5 µs at a voltage spike less than 90 mV.

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