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Energies 2019, 12(2), 211; https://doi.org/10.3390/en12020211

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

1
College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea
2
Samsung Electronics Co. Ltd., Hwaseong 18448, Korea
*
Authors to whom correspondence should be addressed.
Received: 23 November 2018 / Revised: 31 December 2018 / Accepted: 5 January 2019 / Published: 10 January 2019
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Abstract

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. View Full-Text
Keywords: low-dropout regulator; flipped voltage follower; wide load current range; output capacitor-less low-dropout regulator low-dropout regulator; flipped voltage follower; wide load current range; output capacitor-less low-dropout regulator
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Park, J.; Ko, W.-J.; Kang, D.-S.; Lee, Y.; Chun, J.-H. An Output Capacitor-Less Low-Dropout Regulator with 0–100 mA Wide Load Current Range. Energies 2019, 12, 211.

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