A 110-nm CMOS 0.7-V Input Transient-Enhanced Digital Low-Dropout Regulator With 99.98% Current Efficiency at 80-mA Load

2015 ◽  
Vol 23 (7) ◽  
pp. 1281-1286 ◽  
Author(s):  
Tak-Jun Oh ◽  
In-Chul Hwang
Keyword(s):  
Current Efficiency ◽  
Low Dropout Regulator

A Sub-1V 0.18um Output-Capacitor-Free Digitally Controlled LDO

2015 ◽  
Vol 764-765 ◽  
pp. 471-475 ◽  
Author(s):  
Wei Bin Yang ◽  
Shao Jyun Xie ◽  
Han Hsien Wang
Keyword(s):  
Current Efficiency ◽  
Operational Amplifier ◽  
Output Voltage ◽  
Input Voltage ◽  
Control Loop ◽  
Load Current ◽  
Digitally Controlled ◽  
Quiescent Current ◽  
Low Dropout Regulator ◽  
Output Capacitor

The new digital control loop of the low-dropout regulator (LDO) is presented. It is composed of coarse tracking circuit and fine tracking circuit, and no external output capacitor is required to stabilize the control loop. The proposed method makes the quiescent current lower than conventional analog LDOs. The operational amplifier of the conventional LDO fails to operate at 0.7V, and the developed digital LDO in 0.18um CMOS achieved the 0.7V input voltage and 0.5V output voltage with 99.99% current efficiency and 2.6-μA quiescent current at 20mA load current. Therefore, the proposed DLDO is suitable for low power applications.

0.5-V Input Digital Low-Dropout Regulator (LDO) with 98.7% Current Efficiency in 65nm CMOS

2011 ◽  
Vol E94-C (6) ◽  
pp. 938-944 ◽  
Author(s):  
Yasuyuki OKUMA ◽  
Koichi ISHIDA ◽  
Yoshikatsu RYU ◽  
Xin ZHANG ◽  
Po-Hung CHEN ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Low Dropout Regulator

Output-Capacitorless Tri-Loop Digital Low Dropout Regulator Achieving 99.91% Current Efficiency and 2.87 fs FOM

2021 ◽  
Vol 36 (2) ◽  
pp. 2044-2058 ◽  
Author(s):  
Muhammad Abrar Akram ◽  
Kyung-Sung Kim ◽  
Sohmyung Ha ◽  
In-Chul Hwang
Keyword(s):  
Current Efficiency ◽  
Low Dropout Regulator
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