318 nA静态电流0-10mA输出瞬态增强型低压差稳压器应用于能量采集系统

2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM) Pub Date : 2017-11-01 DOI:10.1109/ICAM.2017.8242156

Hongguang Zhang, Zhangwen Tang

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引用次数: 3

摘要

介绍了一种应用于能量收集系统的低静态电流低差调节器(LDO)。采用超源从动器时，LDO在环路单位增益带宽内只有一个极点。利用电流缓冲补偿，在负载电流全范围内保持相裕度。为了减少分压器电阻器上的功耗，用二极管连接的PMOSs代替了电阻器。LDO采用台积电0.18 μm CMOS 1P8M工艺设计，面积为0.011 um2，后置仿真结果表明，该LDO在零负载时功耗为318 nA，可向负载输出0 ~ 10ma电流。负载电流由10mA变为0mA时，超调电压为输出电压的3%，恢复时间为12us。

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A 318 nA quiescent current 0–10mA output transient enhanced low-dropout regulator applied in energy harvest system

A low quiescent current low-dropout regulator (LDO) applied in energy harvest system is presented in this paper. With super-source follower, the LDO has only one pole within loop unity gain bandwidth. And current buffer compensation is utilized to maintain the phase margin under the full range of load current. In order to decrease the power dissipation on the resistors of voltage divider, the resistors are replaced by diode connected PMOSs. The LDO has been designed in TSMC 0.18 μm CMOS 1P8M process with area of 0.011 um2, post-simulation results show that the proposed LDO dissipates 318 nA at zero load, and the LDO can deliver 0–10mA current to load. The overshoot voltage is 3% of output voltage and the recovery time is 12us when load current is changed from 10mA to 0mA.

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2017 2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM)

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