Proceedings of the 2025 2nd International Conference on Mechanics, Electronics Engineering and Automation (ICMEEA 2025)

<Previous Article In Volume
Next Article In Volume>

Optimization of Transient Response in LDOs: An Investigation into Digital-Analog Hybrid Control and Dynamic Gain Compensation

Authors
Jiaze Wang1, *
1Beijing University of Posts and Telecommunications, Electronic Information Engineering, Beijing, China
*Corresponding author. Email: wjz13623255026@bupt.edu.cn
Corresponding Author
Jiaze Wang
Available Online 31 August 2025.
DOI
10.2991/978-94-6463-821-9_94How to use a DOI?
Keywords
Low-Dropout Regulator (LDO); Fast Transient Response; Dynamic High-Impedance Charge Pump; Hybrid Control Algorithm; 5G/IOT Power Management
Abstract

The quick transient response technology of low-voltage differential linear voltage regulators (LDO) has emerged as a research hotspot due to the growing need for dynamic power management in 5G and IoT devices. This article reviews three advanced LDO designs: 1)The dynamic high-impedance charge pump LDO, which suppresses limit cycle oscillations by connecting the output to the power tube grid via an ACHZ loop and employing a 1-bit auxiliary charge pump, achieved a sub-4-FS optimization coefficient (FoM) and a response time of 6.9 ns; 2) The load step reaction time was lowered to 68 ns by hybrid control LDO, in conjunction with digital rough tuning (DLDO) and analog fine tuning (ALDO), using the countable bidirectional binary search (CBBS) algorithm; 3) Adaptive gain layered Miller compensation NMOS LDO dynamically modifies Miller capacitance and pre-weighted reverse bias to maintain 17.5 MHz bandwidth over 0.1–300 mA load range. These solutions are superior to traditional designs in terms of process flexibility, stability, and transient responsiveness. To increase LDO performance in new applications, the future must improve high-frequency noise suppression and optimize static power.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

<Previous Article In Volume
Next Article In Volume>
Volume Title
Proceedings of the 2025 2nd International Conference on Mechanics, Electronics Engineering and Automation (ICMEEA 2025)
Series
Advances in Engineering Research
Publication Date
31 August 2025
ISBN
978-94-6463-821-9
ISSN
2352-5401
DOI
10.2991/978-94-6463-821-9_94How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Jiaze Wang
PY  - 2025
DA  - 2025/08/31
TI  - Optimization of Transient Response in LDOs: An Investigation into Digital-Analog Hybrid Control and Dynamic Gain Compensation
BT  - Proceedings of the 2025 2nd International Conference on Mechanics, Electronics Engineering and Automation (ICMEEA 2025)
PB  - Atlantis Press
SP  - 978
EP  - 986
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-821-9_94
DO  - 10.2991/978-94-6463-821-9_94
ID  - Wang2025
ER  -