Invention Grant
- Patent Title: Ripple pre-amplification based fully integrated low dropout regulator
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Application No.: US16026081Application Date: 2018-07-03
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Publication No.: US10353417B2Publication Date: 2019-07-16
- Inventor: Xin Ming , Jiahao Zhang , Wenlin Zhang , Di Gao , Xuan Zhang , Zhuo Wang , Bo Zhang
- Applicant: University of Electronic Science and Technology of China , Institute of Electronic and Information Engineering of UESTC in Guangdong
- Applicant Address: CN Chengdu
- Assignee: University of Electronic Science and Technology of China
- Current Assignee: University of Electronic Science and Technology of China
- Current Assignee Address: CN Chengdu
- Agent Gokalp Bayramoglu
- Priority: CN201710533403 20170703
- Main IPC: G05F1/575
- IPC: G05F1/575 ; H03F3/30 ; H03F3/45 ; H03F3/08
Abstract:
A ripple pre-amplification based fully integrated LDO pertains to the technical field of power management. The positive input terminal of a transconductance amplifier is connected to a reference voltage Vref, and the negative input terminal of the transconductance amplifier is connected to the feedback voltage Vfb. The output terminal of the transconductance amplifier is connected to the negative input terminal of a transimpedance amplifier and the negative input terminal of an error amplifier. The positive input terminal of the transimpedance amplifier is connected to the ground GND, and the output terminal of the transimpedance amplifier is connected to the positive input terminal of the error amplifier. The gate terminal of the power transistor MP is connected to the output terminal of the error amplifier, the source terminal of the power transistor MP is connected to an input voltage VIN, and the drain terminal of the power transistor MP is grounded.
Public/Granted literature
- US20190004553A1 RIPPLE PRE-AMPLIFICATION BASED FULLY INTEGRATED LOW DROPOUT REGULATOR Public/Granted day:2019-01-03
Information query
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