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A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking
Lu Y.1,2,3; Yao R.H.1; Huang D.Q.1; Su J.1; Jiang J.2; Ki W.-H.2
2015
Conference Name2014 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS)
Source PublicationIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
Volume2015-February
IssueFebruary
Pages105-108
Conference DateNOV 17-20, 2014
Conference PlaceJAPAN
Abstract

This paper presents a low-dropout regulator (LDO) with low quiescent current, small area, and power supply rejection (PSR) improvement, implemented in 0.35μm CMOS process. A zero that tracks the unity gain frequency is employed in the feedback loop using a 1pF compensation capacitor. An improved intermediate stage is designed to split the low frequency pole and drive the power MOSFET. With no equivalent series resistor (ESR) zero requirement, the minimum DC gain and phase margin are 76dB and 70°, respectively. The proposed LDO dissipates 20μA at no-load condition and 385μA at full-load condition. The effective die area is 180×75μm2 that is comparable to the size of a standard I/O. Thus, integrating the proposed LDO in system is flexible.

DOI10.1109/APCCAS.2014.7032730
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Theory & Methods ; Engineering, Electrical & Electronic
WOS IDWOS:000361128200026
Scopus ID2-s2.0-84937878975
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Citation statistics
Document TypeConference paper
CollectionINSTITUTE OF MICROELECTRONICS
Affiliation1.School of Electronic and Information Engineering, South China University of Technology, Guangzhou, 510640, Guangdong, China
2.ECE Department, the Hong Kong University of Science and Technology, Hong Kong, China
3.State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Lu Y.,Yao R.H.,Huang D.Q.,et al. A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking[C], 2015, 105-108.
APA Lu Y.., Yao R.H.., Huang D.Q.., Su J.., Jiang J.., & Ki W.-H. (2015). A low-dropout regulator with power supply rejection improvement by bandwidth-zero tracking. IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 2015-February(February), 105-108.
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