Title：A high PSRR low dropout linear regulator
Country：China
Patent No.：201710966656.2
Legal Status：Authorized
Inventor：Mao Li, Yuxing Zhou, Dengjie Wang, Shuai Yuan, Zhihua Wang, Ziqiang Wang, Chun Zhang
Assignee：
Address：Tsinghua University,Haidian District Beijing 100086, China
Filing Date：2017-10-17
Issue Date：2019-02-22
Abstract：
The invention relates to a low-dropout linear voltage stabilizer, and belongs to the field of integrated circuit design. The low-dropout linear voltage stabilizer utilizes an analog module and digitalmodule mixed control mode, and a voltage follower is additionally arranged in the digital module so that output end voltage ripples of the low-dropout linear voltage stabilizer can be changed along with input end voltage ripples of the low-dropout linear voltage stabilizer. By means of the ripple coupling circuit structure, the high-frequency ripple component of the low-dropout linear voltage stabilizer is inhibited, and then the voltage rejection ratio of a high-frequency power supply of a circuit is improved.
Patent Certificate：
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