涟漪
低压差调节器
带宽(计算)
瞬态响应
调节器
物理
CMOS芯片
负荷调节
控制理论(社会学)
前馈
跌落电压
电气工程
电压
电子工程
光电子学
电压调节器
计算机科学
工程类
电信
化学
基因
控制工程
生物化学
人工智能
控制(管理)
作者
Mohamed El-Nozahi,Mohamed Amer,Janet Rodríguez‐Torres,Kamran Entesari,E. Sánchez-Sinencio
出处
期刊:IEEE Journal of Solid-state Circuits
[Institute of Electrical and Electronics Engineers]
日期:2010-03-01
卷期号:45 (3): 565-577
被引量:222
标识
DOI:10.1109/jssc.2009.2039685
摘要
A low drop-out (LDO) regulator with a feed-forward ripple cancellation (FFRC) technique is proposed in this paper. The FFRC-LDO achieves a high power-supply rejection (PSR) over a wide frequency range. Complete analysis and design steps of the FFRC-LDO are presented in this paper. Kelvin connection is also used to increase the gain-bandwidth of the LDO allowing for faster transient performance. The LDO is implemented in 0.13 ¿m CMOS technology and achieves a PSR better than - 56 dB up to 10 MHz for load currents up to 25 mA. Load regulation of 1.2 mV for a 25 mA step is measured, and the whole LDO consumes a quiescent current of 50 ¿A with a bandgap reference circuit included. To our knowledge, this is the first LDO that achieves such a high PSR up to 10 MHz.
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