A Fast-Response Low-Dropout Regulator Based on Power-Efficient Low-Voltage Buffer | |
Shen, Liang-Guo ; Yan, Zu-Shu ; Zhang, Xing ; Zhao, Yuan-Fu ; Gao, Ming | |
2008 | |
关键词 | LOW-QUIESCENT CURRENT DESIGN |
英文摘要 | A power-efficient low-voltage buffer is presented. The proposed buffer contains a low-frequency zero generation circuit to perform frequency compensation and a slew-rate enhancement (SRE) circuit to provide large dynamic current for driving the pass device of the low-dropout (LDO) voltage regulator. What's more, the proposed buffer, consuming small quiescent current over full load range, can work at low supply voltage, when comparing to conventional voltage buffer. A 1.2-V, 200-mA LDO with the proposed buffer has been designed in a 0.18-mu m standard CMOS process. The low-voltage operation ability, high current efficiency and excellent transient response performance can be achieved. With a 1-mu F ceramic output capacitor, the overshoot and undershoot of the output voltages are less than 20-mV when the load step changes between 1 and 200-mA in 100ns, while the current efficiency is up to 99.99% at full-load current.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000261729500137&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; EI; CPCI-S(ISTP); 1 |
语种 | 英语 |
DOI标识 | 10.1109/MWSCAS.2008.4616857 |
内容类型 | 其他 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/293429] ![]() |
专题 | 信息科学技术学院 |
推荐引用方式 GB/T 7714 | Shen, Liang-Guo,Yan, Zu-Shu,Zhang, Xing,et al. A Fast-Response Low-Dropout Regulator Based on Power-Efficient Low-Voltage Buffer. 2008-01-01. |
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