JSSC 2023第10期Power Management180nmLDO

A Wide-Load-Range and High-Slew Capacitor-Less NMOS LDO With Adaptive-Gain Neste

提出一种宽负载范围、高转换速率的无电容NMOS LDO，采用自适应增益嵌套米勒补偿和预加重反向偏置技术。

180nm CMOS, 0.1-300mA负载范围, 17.5MHz带宽, 1.72ps FoM

无电容LDO自适应补偿嵌套米勒补偿转换速率增强宽负载范围

▸宽范围自适应增益嵌套米勒补偿(W AG-NMC)

▸预加重反向(PI)偏置技术

▸超源跟随器(SSF)结构

Abstract

This article proposes an output capacitor-less NMOS low-dropout regulator (LDO) using wide-range adaptive- gain nested Miller compensation (W AG-NMC) and pre-emphasis inverse (PI) biasing. Due to W AG-NMC, the LDO can provide a wide range of load current ( ILOAD) from 0.1 to 300 mA while maintaining sufficiently high phase margin (PM) above 60 ◦ at all ILOAD conditions. W AG-NMC also extends a loop bandwidth (BW) up to 17.5 MHz with using only small compensation capacitors (CC) of 6.3 pF in tota