NDLI: A linear LDO regulator with modified NMCF frequency compensation independent of off-chip capacitor and ESR

Content Provider	Springer Nature Link
Author	Wang, Chua Chin Huang, Chi Chun Chio, U. Fat
Copyright Year	2009
Abstract	This paper presents a novel compensation design for regulators, i.e., modified NMCF (nested Miller compensation with feedforward Gm stage), resulting in a linear LDO (low dropout) regulator whose performance is independent of the off-chip capacitor and its ESR (equivalent series resistor). The proposed compensation method ensures the stability of the feedback loop and the sufficient phase margin of the LDO regulator. Besides, the transient response become faster. The analysis of the stability is derived to solidify the proposed design. The proposed design is implemented using TSMC 0.35 μm 2P4M CMOS process. The results verify the performance and the stability on silicon. The power supply rejection ratio is 25 dB @ [200 Hz, 3 MHz], [50 Ω, 500 Ω] provided that the input voltage varies from 4 to 5 V.
Starting Page	239
Ending Page	244
Page Count	6
File Format	PDF
ISSN	09251030
Journal	Analog Integrated Circuits and Signal Processing
Volume Number	63
Issue Number	2
e-ISSN	15731979
Language	English
Publisher	Springer US
Publisher Date	2009-10-11
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	LDO regulator Modified NMCF Frequency compensation ESR Signal, Image and Speech Processing Electrical Engineering Circuits and Systems
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Signal Processing Hardware and Architecture

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A linear LDO regulator with modified NMCF frequency compensation independent of off-chip capacitor and ESR