Invention Application
- Patent Title: Voltage Mode Low-Dropout Regulator Circuit with Reduced Quiescent Current
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Application No.: US17017639Application Date: 2020-09-10
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Publication No.: US20220075402A1Publication Date: 2022-03-10
- Inventor: Ruopeng Wang , Jay B. Fletcher
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: G05F1/575
- IPC: G05F1/575 ; G05F1/565
Abstract:
A voltage regulator circuit includes a switch device that is coupled between an input power supply and a regulated power supply node. The voltage regulator circuit adjusts a value of a current flowing from the input power supply to the regulated power supply node by modifying a voltage level of a control node coupled to the switch device. A control circuit adjusts the voltage level of the control node using an error signal based on a comparison of the voltage level of the regulated power supply node and a reference voltage. To improve the response time of the voltage regulator circuit to changes in load current, the control circuit additionally sources current to and/or sinks current from the control node based on a voltage level of the control node.
Public/Granted literature
- US11467614B2 Voltage mode low-dropout regulator circuit with reduced quiescent current Public/Granted day:2022-10-11
Information query
IPC分类:
