Invention Grant
- Patent Title: Electronic device having USB power delivery function
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Application No.: US17526303Application Date: 2021-11-15
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Publication No.: US11750000B2Publication Date: 2023-09-05
- Inventor: Ya-Hsuan Sung , Leaf Chen , Li-Cheng Chu
- Applicant: REALTEK SEMICONDUCTOR CORP.
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORP.
- Current Assignee: REALTEK SEMICONDUCTOR CORP.
- Current Assignee Address: TW Hsinchu
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: TW 9141021 2020.11.23
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H01R13/703 ; H01R13/66

Abstract:
An electronic device having a universal serial bus (USB) power delivery function includes a connector, an electrostatic discharge (ESD) protection circuit, a power reception notification circuit, and a control circuit. The connector is coupled to a USB host. The connector includes a configuration channel (CC) pin. The power reception notification circuit is configured to turn on, in response to an enable signal, a pull-down path of a pull-down circuit of the ESD protection circuit. The configuration channel pin generates a pull-down voltage through the pull-down path of the pull-down circuit when the pull-down path is turned on. The control circuit is configured to send the enable signal to the power reception notification circuit when a trigger signal that meets a power reception condition is detected. The control circuit controls the connector to draw power from the USB host when the pull-down voltage of the connector is greater than a pull-down threshold.
Public/Granted literature
- US20220166241A1 ELECTRONIC DEVICE HAVING USB POWER DELIVERY FUNCTION Public/Granted day:2022-05-26
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