A Low-Power Capacitorless LDO Regulator with Transient Enhancement Structure

被引：0

作者：

Zheng, Lixia ^{[1
]}

Zhu, Yi ^{[1
]}

Xian, Huiyong ^{[1
]}

Li, Jinwen ^{[1
]}

Wan, Chenggong ^{[1
]}

Wu, Jin ^{[1
]}

Sun, Weifeng ^{[1
]}

机构：

[1] Southeast Univ, Dept Integrated Circuit, Nanjing 210096, Peoples R China

来源：

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS | 2024年 / 33卷 / 03期

关键词：

Low-dropout regulator (LDO); operational transconductance amplifier (OTA); transient enhancement; low power; dynamic biasing; super source follower (SSF); DROP-OUT REGULATOR;

D O I：

10.1142/S021812662450049X

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a portable low-power low dropout regulator (LDO) with no output capacitance has been designed in 0.18-mu m CMOS technology. In this paper, a PMOS power transistor is used and combined with an overshoot and undershoot suppression circuit to improve the transient response of the circuit. A modified Class-AB operational transconductance amplifier (OTA) is used to reduce power consumption and act as an error amplifier to eliminate low frequency poles. At the same time, a super source follower and a Miller capacitor are used for frequency compensation of the system. Finally, the system can provide a stable voltage for a load step from 0.2 to 25mA in 500 ns edge-time for 140 pF-load capacitance. The test results show that the circuit achieves a good voltage regulation rate and high transient response.

引用

页数：15

共 50 条

[21] Low-Power Fast-Transient Capacitor-Less LDO Regulator With High Slew-Rate Class-AB Amplifier
Tang, Jun
Lee, Jaeseong
Roh, Jeongjin
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2019, 66 (03) : 462 - 466
[22] A low-power fast transient output capacitor-free adaptively biased LDO based on slew rate enhancement for SoC applications
Lim, Chee-Cheow
Lai, Nai-Shyan
Tan, Gim-Heng
Ramiah, Harikrishnan
MICROELECTRONICS JOURNAL, 2015, 46 (08) : 740 - 749
[23] Quick response circuit for low-power LDO voltage regulators to improve load transient response
Heng, Socheat
Pham, Cong-Kha
2007 INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES, VOLS 1-3, 2007, : 28 - 33
[24] A low-power LDO circuit with a fast load regulation
Jang, Young-Jae
Cho, Seong-Eun
Kim, Byungsub
Sim, Jae-Yoon
Park, Hong-June
2016 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS), 2016, : 47 - 49
[25] Full Quiescent Current Enhancement Technique for Improving Transient Response on the Output-Capacitorless Low-Dropout Regulator
Wu, Chun-Hsun
Chang-Chien, Le-Ren
2012 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 2012), 2012, : 2733 - 2736
[26] Design of a Low-Power and Area-Efficient LDO Regulator Using a Negative-R-Assisted Technique
Kim, Jung Sik
Javed, Khurram
Roh, Jeongjin
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2023, 70 (10) : 3892 - 3896
[27] A FVF Based Output Capacitorless LDO Regulator with Wide Load Capacitance Range
Koay, K. C.
Chong, S. S.
Chan, P. K.
2013 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), 2013, : 1488 - 1491
[28] A 65μA 8MHz On-Chip Oscillator with LDO Regulator for Low-Power Handheld SoC Applications
Day, J.
Vulpoiu, P.
Johnson, D. K.
Julich, J.
Lie, D. Y. C.
2008 9TH INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED-CIRCUIT TECHNOLOGY, VOLS 1-4, 2008, : 2019 - +
[29] Low-power output-capacitorless low-dropout regulator with adjustable charge injection technique for on-off-keying transmitters
Akita, Ippei
Asai, Shochi
Ishida, Makoto
JAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (04)
[30] A transient-enhanced output-capacitorless LDO regulator with non-inverting pull-push gain stage
Shu, Hang
Liao, Pengfei
Peng, Haiqing
Chen, Wensuo
MICROELECTRONICS JOURNAL, 2024, 151

← 1 2 3 4 5 →