An Output Capacitor-Less Low-Dropout Regulator with 0–100 mA Wide Load Current Range

An output capacitor-less low-dropout (OCL-LDO) regulator with a wide range of load currents is proposed in this study. The structure of the proposed regulator is based on the flipped-voltage-follower LDO regulator. The feedback loop of the proposed regulator consists of two stages. The second stage...

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Bibliographic Details
Published in:Energies (Basel) 2019-01, Vol.12 (2), p.211
Main Authors: Park, Jihoon, Ko, Woong-Joon, Dong-Seok, Kang, Lee, Yoonmyung, Jung-Hoon, Chun
Format: Article
Language:English
Subjects:
Analog circuits
Capacitance
Capacitors
Circuits
CMOS
Design
Energy efficiency
Energy management
Feedback
Feedback loops
flipped voltage follower
Integrated circuits
International conferences
Internet of Things
low-dropout regulator
output capacitor-less low-dropout regulator
Parasitics (electronics)
Power efficiency
Power lines
Power management
Power supplies
Power supply
Regulation
Transistors
wide load current range
Wireless networks
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Summary:An output capacitor-less low-dropout (OCL-LDO) regulator with a wide range of load currents is proposed in this study. The structure of the proposed regulator is based on the flipped-voltage-follower LDO regulator. The feedback loop of the proposed regulator consists of two stages. The second stage is turned on or off depending on the variation in the output load current. Hence, the regulator can retain a phase margin at a wide range of load currents. The proposed regulator exhibits a better regulation performance compared to the ones in previous studies. The test chip is fabricated using a 65-nm CMOS process.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12020211