Publication detail

A Low-Dropout Voltage Regulator with a Fractional-Order Control

KADLČÍK, L. HORSKÝ, P.

Original Title

A Low-Dropout Voltage Regulator with a Fractional-Order Control

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents a 5 V / 50 mA low-dropout voltage regulator (LDO). The LDO uses a fractional-order control for its regulation loop to achieve a high DC gain (for a tight DC regulation) while avoiding (for a good stability) a high gain at high frequency. No compensation zeros are needed. The unity gain frequency of the regulation loop also changes adaptively with the output current to maintain it below the frequency of non-dominant poles. The LDO is stable with any external capacitance larger than 50 nF, and is expected to operate in a harsh automotive environment, with junction temperature ranging from -40°C to 170°C and with supply voltage from 7 V to 36 V. The operation of the LDO has been verified by realizing it in the 350 nm I3T50 ON Semiconductor technology.

Keywords

fractional-order control, error amplifier, RC ladder, low-dropout regulator, frequency compensation

Authors

KADLČÍK, L.; HORSKÝ, P.

Released

16. 5. 2016

Publisher

Společnost pro radioelektronické inženýrství

Location

Brno

ISBN

1805-9600

Periodical

Radioengineering

Year of study

25

Number

2

State

Czech Republic

Pages from

312

Pages to

320

Pages count

9

URL

http://www.radioeng.cz/fulltexts/2016/16_02_0312_0320.pdf

BibTex

@article{BUT126650,
  author="Libor {Kadlčík} and Pavel {Horský}",
  title="A Low-Dropout Voltage Regulator with a Fractional-Order Control",
  journal="Radioengineering",
  year="2016",
  volume="25",
  number="2",
  pages="312--320",
  doi="10.13164/re.2016.0312",
  issn="1805-9600",
  url="http://www.radioeng.cz/fulltexts/2016/16_02_0312_0320.pdf"
}