一种适用于高压电源管理的无输出电容自基准低压差线性稳压器  

A Capacitor-Less Low Dropout Linear Regulator with Self-Voltage Reference for High Voltage Power Management

作　　者：唐宇[1] 冯全源[1] 

机构地区：[1]西南交通大学微电子研究所,成都610031

出　　处：《电子器件》2014年第1期26-29,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金重大项目(60990320;60990323);国家自然科学基金面上项目(61271090);国家高技术研究发展计划(863计划)重大项目(2012AA012305);四川省科技支撑计划项目(2012GZ0101);成都市科技计划项目(12DXYB347JH-002)

摘　　要：设计了一种用于高压电源管理(Power Management)芯片内部供电的无输出电容、自基准全集成低压差线性稳压器,低压差线性稳压器与电压基准形成自供电自偏置环路,减少了电路的规模。通过对LDO—基准环路小信号特性分析,并用Hspice进行仿真验证,该环路具有足够低的环路增益,低频时能达到-82 dB,不会对供电系统的稳定性造成影响。A self-voltage reference fully integrated low dropout linear regulator was designed as a internal power supply for the high-voltage power management chips,and without an output capacitor. It achieved the reduction of circuit scale because of the self-powered and self-bias loop, which was constituted by the low dropout linear regulator and the voltage reference. Through analyzing and simulating the small signal characteristic of the loop with Hspice,a low enough loop gain achieved -82 dB at low frequency, which proved the loop has no effect on the stability of the power supply system.

关 键 词：电源管理 无输出电容 自供电自偏置 

分 类 号：TN43[电子电信—微电子学与固体电子学]