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大电流负载的片上LDO系统设计
  • ISSN号：0372-2112
  • 期刊名称：《电子学报》
  • 时间：0
  • 分类：TN43[电子电信—微电子学与固体电子学]
  • 作者机构：[1]中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室,上海200050
  • 相关基金：国家集成电路重大专项（No.2009ZX02023-003）; 国家重点基础研究发展计划（No.2007CB935400,No.2010CB934300,No.2011CB309602,No.2011CB932800）; 国家自然科学基金（No.60906004,No.60906003,No.61006087,No.61076121）; 上海市科委资助项目（No.09QH1402600,No.1052nm07000）; 电子薄膜与集成器件国家重点实验室开放基金（No.KFJJ201110）
作者： 胡佳俊[1], 陈后鹏[1], 宋志棠[1], 王倩[1], 宏潇[1], 李喜[1], 许伟义[1]
关键词： 瞬态响应, 相位裕度, 快速响应, 低压差, 大电流负载, transient response, phase margin, quick response, low dropout, large loading current
中文摘要：

本文分析了传统大电流负载的LDO（Low-dropout Regulator）系统实现系统稳定性和瞬态响应提高的局限性,在此基础上,提出了一种片内集成的瞬态响应提高技术.此技术无需外挂电容和等效串联电阻（Equivalent SeriesResistor,ESR）,即能使系统在全负载范围内保持稳定性和良好的纹波抑制能力.仿真结果表明,系统空载时,静态电流为64μA,且最大能提供800mA的负载电流,1KHz时的电源抑制比达到-60dB,当负载电流以800mA/5μs跳变时,最大下冲电压为400mV,上冲电压为536mV,恢复时间分别只需6.7μs和12.8μs,版图面积约为0.64mm2.

英文摘要：

This paper analyzes the stability and transient response enhancement limit of traditional LDO system and a Wan- sient response enhancement technique of on-chip I.DO system is presented.Based on the analysis, a transient response enhancement technique fully integrated on-chip is put forward. The proposed scheme not only results in stability within a wide range of load varia- tion, but also gets a good tipple rejection without off-chip capacitor and equivalent series resistor. It is demomtrated by simulation that the proposed circuit dissipates only 64μA of quiescent current with empty load and it is capable of delivering load current up to 800mA, the power supply rejection rote at 1KHz is about - 60d8. For a load step of 8（X）mA/SPs, the circuit has a maximum under- shoot of 400mV and a maximum overshoot of 536mV. The recovery time is only 6.7Ps and 12.8Ps respectively and the layout area is about 0.64ram2.

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期刊信息
  • 《电子学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国电子学会
  • 主编：郝跃
  • 地址：北京165信箱
  • 邮编：100036
  • 邮箱：new@ejournal.org.cn
  • 电话：010-68279116 68285082
  • 国际标准刊号：ISSN：0372-2112
  • 国内统一刊号：ISSN：11-2087/TN
  • 邮发代号:2-891
  • 获奖情况:
  • 2000年获国家期刊奖,2000年获国家自然科学基金志项基金支持,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:57611