一种1.8 - 5.5 v带LACM缓冲的LDO-BGR系统,用于相机的高PSRR应用

IF 4.9 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Won-Gyu Kim;Sang-Yun Nam;Young-Jun Jeon;Sung-Wan Hong
{"title":"一种1.8 - 5.5 v带LACM缓冲的LDO-BGR系统,用于相机的高PSRR应用","authors":"Won-Gyu Kim;Sang-Yun Nam;Young-Jun Jeon;Sung-Wan Hong","doi":"10.1109/TCSII.2025.3578616","DOIUrl":null,"url":null,"abstract":"This brief proposes a low-dropout regulator (LDO) and bandgap reference (BGR) system designed for camera applications, where high power supply rejection ratio (PSRR) and low output noise are critical. To achieve a stable output across a wide load range from no load to 600 mA a load-adaptive current-mirror (LACM) buffer is introduced. The LACM buffer effectively regulates current flow across different load conditions, minimizing power loss while ensuring stable operation. Additionally, a sample-and-hold (S/H)-based BGR is implemented to eliminate noise propagation from the supply voltage <inline-formula> <tex-math>$(V_{\\mathrm { SYS}})$ </tex-math></inline-formula> to the reference voltage <inline-formula> <tex-math>$(V_{\\mathrm { REF}})$ </tex-math></inline-formula>, further enhancing PSRR. The proposed system was fabricated using a 0.18-<inline-formula> <tex-math>$\\mu $ </tex-math></inline-formula>m CMOS process.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1108-1112"},"PeriodicalIF":4.9000,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A 1.8–5.5-V LDO–BGR System With LACM Buffer for High PSRR in Camera Applications\",\"authors\":\"Won-Gyu Kim;Sang-Yun Nam;Young-Jun Jeon;Sung-Wan Hong\",\"doi\":\"10.1109/TCSII.2025.3578616\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This brief proposes a low-dropout regulator (LDO) and bandgap reference (BGR) system designed for camera applications, where high power supply rejection ratio (PSRR) and low output noise are critical. To achieve a stable output across a wide load range from no load to 600 mA a load-adaptive current-mirror (LACM) buffer is introduced. The LACM buffer effectively regulates current flow across different load conditions, minimizing power loss while ensuring stable operation. Additionally, a sample-and-hold (S/H)-based BGR is implemented to eliminate noise propagation from the supply voltage <inline-formula> <tex-math>$(V_{\\\\mathrm { SYS}})$ </tex-math></inline-formula> to the reference voltage <inline-formula> <tex-math>$(V_{\\\\mathrm { REF}})$ </tex-math></inline-formula>, further enhancing PSRR. The proposed system was fabricated using a 0.18-<inline-formula> <tex-math>$\\\\mu $ </tex-math></inline-formula>m CMOS process.\",\"PeriodicalId\":13101,\"journal\":{\"name\":\"IEEE Transactions on Circuits and Systems II: Express Briefs\",\"volume\":\"72 8\",\"pages\":\"1108-1112\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2025-06-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Circuits and Systems II: Express Briefs\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/11030853/\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Circuits and Systems II: Express Briefs","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/11030853/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

摘要

本简介提出了一种低差稳压器(LDO)和带隙参考(BGR)系统,设计用于相机应用,其中高电源抑制比(PSRR)和低输出噪声是至关重要的。为了实现从空载到600毫安的宽负载范围内的稳定输出,引入了负载自适应电流镜(LACM)缓冲器。LACM缓冲器有效调节不同负载条件下的电流,最大限度地减少功率损失,同时确保稳定运行。此外,实现了基于采样保持(S/H)的BGR,消除了从电源电压$(V_{\mathrm {SYS}})$到参考电压$(V_{\mathrm {REF}})$的噪声传播,进一步提高了PSRR。该系统采用0.18- $\mu $ m CMOS工艺制备。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 1.8–5.5-V LDO–BGR System With LACM Buffer for High PSRR in Camera Applications
This brief proposes a low-dropout regulator (LDO) and bandgap reference (BGR) system designed for camera applications, where high power supply rejection ratio (PSRR) and low output noise are critical. To achieve a stable output across a wide load range from no load to 600 mA a load-adaptive current-mirror (LACM) buffer is introduced. The LACM buffer effectively regulates current flow across different load conditions, minimizing power loss while ensuring stable operation. Additionally, a sample-and-hold (S/H)-based BGR is implemented to eliminate noise propagation from the supply voltage $(V_{\mathrm { SYS}})$ to the reference voltage $(V_{\mathrm { REF}})$ , further enhancing PSRR. The proposed system was fabricated using a 0.18- $\mu $ m CMOS process.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
IEEE Transactions on Circuits and Systems II: Express Briefs
IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程:电子与电气
CiteScore
7.90
自引率
20.50%
发文量
883
审稿时长
3.0 months
期刊介绍: TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信