Low-Dropout Regulators With Adaptive Reference Control and Dynamic Push-Pull Techniques for Enhancing Transient Performance

被引：47

作者：

Lin, Chia-Hsiang ^{[1
]}

Chen, Ke-Horng ^{[1
]}

Huang, Hong-Wei ^{[2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Elect & Control Engn, Hsinchu 300, Taiwan

[2] RichTek Technol Corp, Hsinchu 30288, Taiwan

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2009年 / 24卷 / 3-4期

关键词：

Analog ICs; CMOS analog ICs; dc-dc power conversion; MOSFET ICs; VOLTAGE;

D O I：

10.1109/TPEL.2008.2007957

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An adaptive reference control (ARC) technique is proposed for minimizing overshoot/undershoot voltage and settling time of low-dropout regulators. Linear operation provided by the ARC technique can dynamically and smoothly adjust the reference voltage so as to increase the slew rate of error amplifier thus forcing the output voltage back to its steady-state value rapidly. The amount of transient revision is proportional to transient state output voltage variation and load condition. In addition, a dynamic push-pull technique is used to enhance transient response. Experimental results demonstrate that the undershoot voltage, settling time, and load regulation are improved by 31%, 68.5%, and 70%, respectively, when load current changes between 1 and 100 mA.

引用

页码：1016 / 1022

页数：7

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