Fully-Integrated CMOS LDO Regulator Based on an Embedded Current-Mode Capacitor Multiplier

Author

Saberkari, A. ; Martinez, H. ; Fathipour, R. ; Alarcon, E.

Author_Institution

Dept. of Electr. Eng., Univ. of Guilan, Rasht, Iran

Volume

13

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

919

Lastpage

926

Abstract

This article presents a fully-integrated CMOS output-capacitorless low-dropout voltage regulator (LDO). A capacitor multiplier based on a current-mode amplifier is embedded into the error amplifier of the aforementioned LDO to simultaneously enhance the dynamic specifications to load variations, stability by pole splitting, and power saving. The proposed LDO topology is designed and post simulated using a 0.35 μm CMOS process to deliver a load current between 0-100 mA. The dropout voltage of the LDO is set to 200 mV for 2-3.5 V input voltage. A final benchmark comparison considering all relevant performance metrics is presented.

Keywords

CMOS analogue integrated circuits; amplifiers; analogue multipliers; current-mode circuits; voltage regulators; current-mode amplifier; embedded current-mode capacitor multiplier; error amplifier; fully-integrated CMOS output-capacitorless LDO regulator; load variations; low-dropout voltage regulator; pole splitting; power saving; size 0.35 mum; voltage 2 V to 3.5 V; voltage 200 mV; CMOS integrated circuits; Capacitors; Integrated circuit modeling; Regulators; Silicon compounds; System-on-chip; Transistors; Current-Mode Amplifier; Embedded Capacitor Multiplier; Error Amplifier; Fast Transient; Low-Dropout Regulator; Output-Capacitorless;

fLanguage

English

Journal_Title

Latin America Transactions, IEEE (Revista IEEE America Latina)

Publisher

ieee

ISSN

1548-0992

Type

jour

DOI

10.1109/TLA.2015.7106338

Filename

7106338