CPC H02J 7/00308 (2020.01) [H01R 13/6666 (2013.01); H01R 13/7031 (2013.01); H02J 7/0031 (2013.01)] | 17 Claims |
1. An electronic device having a universal serial bus (USB) power delivery function, comprising:
a connector, coupled to a USB host, and comprising a configuration channel pin;
an electrostatic discharge (ESD) protection circuit, coupled to the configuration channel pin of the connector;
a power reception notification circuit, coupled to the ESD protection circuit, and configured to turn on, in response to an enable signal, a pull-down path of a pull-down circuit of the ESD protection circuit, wherein 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; and
a control circuit, coupled to the power reception notification circuit and the connector, and configured to send the enable signal to the power reception notification circuit when a trigger signal that meets a power reception condition is detected, wherein 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.
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