电子元件与材料2026，Vol.45Issue(4)：414-423,10.DOI:10.14106/j.cnki.1001-2028.2026.1455
面向IoT终端低功耗快速瞬态响应全集成LDO设计
A fully-integrated LDO with low power consumption and fast transient response for IoT terminals
李宇航 1吴巍 2王俊峰1
作者信息
- 1. 南京邮电大学 集成电路科学与工程学院,江苏南京 210023||南京宇都通讯科技有限公司,江苏南京 210046
- 2. 南京宇都通讯科技有限公司,江苏南京 210046
- 折叠
摘要
Abstract
In order to meet the requirements of high integration,low power consumption,and fast transient response for power management chips in Internet of Things(IoT)terminals,a fully integrated low dropout linear regulator(LDO)was proposed.This circuit adopted a subthreshold CMOS voltage reference circuit and an adaptive bias current circuit to reduce the LDO area and the power consumption.An error amplifier with a local common-mode feedback circuit,a super source follower,a transient enhancement circuit,and a substrate modulation amplifier were adopted to improve the transient response of the LDO.The circuit was designed and verified based on SMIC 55 nm CMOS technology.The results showed that when the input voltage ranged from 1.1 V to 1.5 V,the LDO stably outputed 1.0 V,with a maximum load current of 50 mA and a quiescent current of 6.17 μA.When the load current jumped within the range from 0.5 mA to 50 mA in 1 μs,the overshoot voltage and undershoot voltage were 14.8 mV and 29.2 mV,respectively,and the stable recovery time were 3 μs and 2.4μs,respectively.This LDO is suitable for low-power IoT application scenarios.关键词
低功耗/超级源跟随器/全集成LDO/局部共模反馈Key words
low power consumption/super source follower/fully integrated LDO/local common-mode feedback分类
信息技术与安全科学引用本文复制引用
李宇航,吴巍,王俊峰..面向IoT终端低功耗快速瞬态响应全集成LDO设计[J].电子元件与材料,2026,45(4):414-423,10.
