A low noise, high PSR low-dropout regulator for low-cost portable electronics

Author

El Khadiri, Karim ; Qjidaa, Hassan

Author_Institution

Lab. d´Electron. Signaux - Syst. et Inf.(LESSI), Univ. Sidi Mohamed Ben Abdellah, Fes, Morocco

fYear

2013

fDate

27-30 May 2013

Firstpage

1

Lastpage

5

Abstract

This paper presents A low noise, high PSRR low-dropout regulator for low-cost portable electronics. The proposed LDO uses an Operational Transconductance Amplifier (OTA) with Miller R-C compensation to ensure a stable phase margin greater than 62°. The active chip of the proposed regulator is only 150×680 um2. The design was simulated and lyouted in Cadence using mixed-signal 90 nm 2P9M CMOS process, the simulation results show that this LDO output voltage can achieves line regulation of less than 0.10% and load regulation of better than 0.25% and a low quiescent current of only 90uA and ultra-low noise of only 65 nV/SqrtHz. Moreover, it can achieve a PSRR of -52 dB and -64 dB at 1 and 10 kHz, respectively. The input voltage is ranged from 2.70 to 5 V for a load current 100 mA and an output voltage of 1.5 V.

Keywords

CMOS integrated circuits; circuit simulation; low-power electronics; operational amplifiers; voltage regulators; Cadence; Miller R-C compensation; OTA; current 100 mA; current 90 muA; frequency 1 kHz; frequency 10 kHz; high PSR low-dropout regulator; low noise low-dropout regulator; low-cost portable electronics; mixed-signal 2P9M CMOS process; operational transconductance amplifier; quiescent current; size 90 nm; stable phase margin; voltage 1.5 V to 5 V; Capacitors; Feedback loop; Noise; Photonic band gap; Regulators; Resistors; Voltage control; High PSRR; LDO regulator; Low Voltage; Low noise; Quiescent Current;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Systems and Applications (AICCSA), 2013 ACS International Conference on

Conference_Location

Ifrane

ISSN

2161-5322

Type

conf

DOI

10.1109/AICCSA.2013.6616415

Filename

6616415