- Patent Title: Power supply management device and power supply management method
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Application No.: US17870965Application Date: 2022-07-22
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Publication No.: US11774993B2Publication Date: 2023-10-03
- Inventor: Zhan-Peng Wang , Su-Hang Chen , Bin Sun , Qing-Zhe Qiu
- Applicant: REALTEK SEMICONDUCTOR CORPORATION
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, P.C
- Priority: CN 2111337985.3 2021.11.12
- Main IPC: G05F1/56
- IPC: G05F1/56 ; G05F1/565 ; G05F1/46

Abstract:
A power supply management device includes an internal power supply circuit, switches, a comparator circuit, and a control circuit. The internal power supply circuit is configured to output a first supply voltage to a node. The switches are coupled between the node and a plurality of first circuits. The comparator circuit is configured to compare a voltage on the node with a reference voltage when the node does not receive the first supply voltage to generate a flag signal. The control circuit is configured to determine whether the node receives a second supply voltage from an external power supply circuit according to the flag signal. If the node receives the second supply voltage, the control circuit is further configured to turn off the internal power supply circuit and gradually turn on the switches, in order to provide the second supply voltage to the first circuits via the switches.
Public/Granted literature
- US20230152829A1 POWER SUPPLY MANAGEMENT DEVICE AND POWER SUPPLY MANAGEMENT METHOD Public/Granted day:2023-05-18
Information query
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