A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique

Inho Park; Jinseok Oh; Chulwoo Kim

doi:10.1109/ISCAS51556.2021.9401094

A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique

Inho Park, Jinseok Oh, Chulwoo Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

This paper presents an adaptive dropout voltage regulator based on a constant on-time buck converter that improves the light load efficiency. By regulating the gate voltage of the pass transistor of the low dropout regulator (LDO), the dropout voltage is automatically minimized depending on the load current, increasing the end-to-end power conversion efficiency at the light load condition by 11.3%. The proposed direct-charging scheme and simple undershoot detector reduce the droop and improve the efficiency of the LDO. The reference pre-compensation technique is proposed to improve the ripple performance by compensating the reference voltage based on the on-time pulses. The proposed voltage regulator was fabricated by a 0.18-μm CMOS process and occupies 0.2874 mm²

Original language	English
Title of host publication	2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728192017
DOIs	https://doi.org/10.1109/ISCAS51556.2021.9401094
Publication status	Published - 2021
Event	53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Daegu, Korea, Republic of Duration: 2021 May 22 → 2021 May 28

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	2021-May
ISSN (Print)	0271-4310

Conference

Conference	53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021
Country/Territory	Korea, Republic of
City	Daegu
Period	21/5/22 → 21/5/28

Bibliographical note

Publisher Copyright:
© 2021 IEEE

Keywords

Buck converter
Constant-on-time
DC-DC converter
Dropout voltage optimization
LDO
Low-dropout regulator
Power management IC

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/ISCAS51556.2021.9401094

Cite this

Park, I., Oh, J., & Kim, C. (2021). A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique. In 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings Article 9401094 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2021-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS51556.2021.9401094

A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique. / Park, Inho; Oh, Jinseok; Kim, Chulwoo.
2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. 9401094 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2021-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Park, I, Oh, J & Kim, C 2021, A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique. in 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings., 9401094, Proceedings - IEEE International Symposium on Circuits and Systems, vol. 2021-May, Institute of Electrical and Electronics Engineers Inc., 53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021, Daegu, Korea, Republic of, 21/5/22. https://doi.org/10.1109/ISCAS51556.2021.9401094

Park I, Oh J, Kim C. A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique. In 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2021. 9401094. (Proceedings - IEEE International Symposium on Circuits and Systems). doi: 10.1109/ISCAS51556.2021.9401094

Park, Inho ; Oh, Jinseok ; Kim, Chulwoo. / A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique. 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. (Proceedings - IEEE International Symposium on Circuits and Systems).

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abstract = "This paper presents an adaptive dropout voltage regulator based on a constant on-time buck converter that improves the light load efficiency. By regulating the gate voltage of the pass transistor of the low dropout regulator (LDO), the dropout voltage is automatically minimized depending on the load current, increasing the end-to-end power conversion efficiency at the light load condition by 11.3%. The proposed direct-charging scheme and simple undershoot detector reduce the droop and improve the efficiency of the LDO. The reference pre-compensation technique is proposed to improve the ripple performance by compensating the reference voltage based on the on-time pulses. The proposed voltage regulator was fabricated by a 0.18-μm CMOS process and occupies 0.2874 mm2",

keywords = "Buck converter, Constant-on-time, DC-DC converter, Dropout voltage optimization, LDO, Low-dropout regulator, Power management IC",

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N2 - This paper presents an adaptive dropout voltage regulator based on a constant on-time buck converter that improves the light load efficiency. By regulating the gate voltage of the pass transistor of the low dropout regulator (LDO), the dropout voltage is automatically minimized depending on the load current, increasing the end-to-end power conversion efficiency at the light load condition by 11.3%. The proposed direct-charging scheme and simple undershoot detector reduce the droop and improve the efficiency of the LDO. The reference pre-compensation technique is proposed to improve the ripple performance by compensating the reference voltage based on the on-time pulses. The proposed voltage regulator was fabricated by a 0.18-μm CMOS process and occupies 0.2874 mm2

AB - This paper presents an adaptive dropout voltage regulator based on a constant on-time buck converter that improves the light load efficiency. By regulating the gate voltage of the pass transistor of the low dropout regulator (LDO), the dropout voltage is automatically minimized depending on the load current, increasing the end-to-end power conversion efficiency at the light load condition by 11.3%. The proposed direct-charging scheme and simple undershoot detector reduce the droop and improve the efficiency of the LDO. The reference pre-compensation technique is proposed to improve the ripple performance by compensating the reference voltage based on the on-time pulses. The proposed voltage regulator was fabricated by a 0.18-μm CMOS process and occupies 0.2874 mm2

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KW - Constant-on-time

KW - DC-DC converter

KW - Dropout voltage optimization

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A power management system based on adaptive low-dropout voltage regulator with optimal reference pre-compensation technique

Abstract

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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