+高级检索
宽范围负载CL-LDO的设计
DOI:
作者:
作者单位:

作者简介:

通讯作者:

基金项目:


Design of a CL-LDO with Wide Range Load
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    针对规模与功耗骤增的集成电路发展趋势,设计了一种可以提供宽范围负载电流的无片外电容型低压差线性稳压器(CL-LDO).为了解决宽范围负载电流与无片外电容等需求所带来的稳定性问题与瞬态特性问题,提出了动态零点补偿的方式与瞬态增强电路结构,既保障了整体电路在全负载范围内保持稳定,又实现了较好的瞬态特性.基于0.11 μm CMOS工艺,完成电路设计、版图设计与仿真,仿真结果表明,在0~500 mA的负载范围内,整体环路增益可以达到68 dB;最小相位裕度为56°;当负载电流在1~500 mA之间发生跳变时(Δt=500 ns),输出过冲和下冲分别为56 mV和141 mV,建立时间分别为2 μs和0.78 μs;PSR 为-67.2 dB@ 1 kHz,负载调整率为0.137 μV/mA.

    Abstract:

    Aiming at the development trend of integrated circuits (ICs) with rapid increase in scale and power consumption, a novel capacitor-less low-drop-out linear voltage regulator (CL-LDO) has been designed to provide a wide range of load currents. To solve the issues of stability and transient response caused by the requirements of a wide range of load currents and no off-chip capacitor, a dynamic zero-point compensation method and a transient enhancement circuit structure are proposed, which not only ensures the stability of the whole circuit in the full load range, but also achieves excellent transient characteristics. Based on 0.11 μm CMOS technology, the circuit design, layout design and simulation are completed. The simulation results show that the overall loop gain can reach 68 dB with a minimum phase margin of 56° within the load range of 0 mA to 500 mA, the output overshoot and undershoot are 56 mVand 141 mV, and their settling time is 2 μs and 0.78 μs, respectively, when load current transients range from 1 mA to 500 mA (Δt=500 ns), the power supply rejection (PSR) is -67.2 dB@1 kHz, and the load regulation rate is 0.137 μV/mA.

    参考文献
    相似文献
    引证文献
文章指标
  • PDF下载次数:
  • HTML阅读次数:
  • 摘要点击次数:
  • 引用次数:
引用本文

唐俊龙 ?,关浩 ,邓欢 ,李振涛 ,邹望辉 .宽范围负载CL-LDO的设计[J].湖南大学学报:自然科学版,2024,(8):109~116

复制
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2024-08-26
  • 出版日期:
作者稿件一经被我刊录用,如无特别声明,即视作同意授予我刊论文整体的全部复制传播的权利,包括但不限于复制权、发行权、信息网络传播权、广播权、表演权、翻译权、汇编权、改编权等著作使用权转让给我刊,我刊有权根据工作需要,允许合作的数据库、新媒体平台及其他数字平台进行数字传播和国际传播等。特此声明。
关闭