A fast transient response and high current efficiency output-capacitorless low dropout regulator for low-power SoC applications

被引：0
|
作者：
Yang, Wei-Bin [1 ]
Li, Yu-Hsin [2 ]
Yu, Cheng-Yang [2 ]
Lo, Yu-Lung [2 ]
机构：
[1] Tamkang Univ, Dept Elect Engn, New Taipei 251, Taiwan
[2] Natl Kaohsiung Normal Univ, Dept Elect Engn, Kaohsiung 824, Taiwan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2019年 / 58卷 / SB期
关键词：
LDO REGULATOR;
D O I：
10.7567/1347-4065/aafe6c
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This paper presents an output capacitor-less low-dropout regulator (LDO) with a fast transient response and high current efficiency. The proposed slew rate enhancement circuit is activated only when the output voltage is instantaneously changed due to the transient of the load current. This method cannot only instantaneously increase the bias current source current for rapid output voltage recovery in order to enhance the load regulation but also reduce power consumption. The proposed LDO was fabricated using the standard 0.18 mu m CMOS process. Measurement results revealed that the proposed LDO can operate from 1.2 to 1.8 Vat an output voltage of 1 V and can provide loading current ranging from 3 to 100 mA. The current efficiency of the LDO was determined to be 99.96% at the maximal load current of 100 mA. (C) 2019 The Japan Society of Applied Physics
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页数：10
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