An Input Up to 100-V High Voltage LDO Based a Novel Pre-Regulation and a Simple Clamp Current Circuit
-
Published:2023-07-28
Issue:15
Volume:12
Page:3257
-
ISSN:2079-9292
-
Container-title:Electronics
-
language:en
-
Short-container-title:Electronics
Author:
Li Linxi12, Lai Xinquan1, Jin Dinghai2, Shi Lingfeng1ORCID, Xu Siting1
Affiliation:
1. School of Electronic Engineering, Xidian University, Xi’an 710071, China 2. Shenzhen Changyuntong Semiconductor Co., Ltd., Shenzhen 518133, China
Abstract
With the aim of improving the small input voltage range and complex structure of the current-limiting circuit in the traditional LDO, a wide-range high-voltage input LDO was designed, which uses a pre-regulation principle and a diode current-limiting protection scheme. Based on the DB HiTek 0.18 μm BCD process model for circuit simulation, the simulation results showed that this proposed LDO can stably output 7.6 V under the input voltage range from 13 V to 100 V. In addition, the load regulation rate was 0.0256 mV/mA, and the line regulation rate was 0.035 mV/V. When the load current exceeded 30 mA, the output voltage was prohibited and overcurrent protection was performed. The measurement results showed that the maximum input voltage of the designed chip could reach 140 V. When the load current exceeded 19 mA, the LDO had no output voltage, which indicates that the current limiting circuit can work stably. The circuit designed in this paper has a simple structure but good stability. To date, the LDO has been applied to other DC-DC power supply chips.
Funder
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
Reference15 articles.
1. Ren, Y., Huang, S., Duan, Q., Ding, Y., and Li, M. (June, January 31). A 1500 mA load current LDO with wide power supply range in lithium-ion battery. Proceedings of the 2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), Wuhan, China. 2. Yin, J., Huang, S., Duan, Q., and Cheng, Y. (2017, January 5–8). An 800 mA load current LDO with wide input voltage range. Proceedings of the 2017 International Conference on Circuits, Devices and Systems (ICCDS), Chengdu, China. 3. Ryzhkov, V.A., Karpovich, M.S., Surin, I.K., and Vasilyev, V.Y. (July, January 30). High-voltage low drop output voltage regulator with output current fold-back protection in 250 nm BCD technology. Proceedings of the 2016 17th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM), Erlagol, Russia. 4. High current operational amplifier with current limiting protection circuit;Wang;IET Circuits Devices Syst.,2020 5. Guo, J., and Leung, K.N. (2009, January 24–27). A fold-back current-limit circuit with load-insensitive quiescent current for CMOS low dropout regulator. Proceedings of the 2009 IEEE International Symposium on Circuits and Systems (ISCAS), Taipei, Taiwan.
|
|