Electronic device and hot-plug protection circuit
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United States of America Patent
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Aug 27, 2019
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N/A
app pub date -
Jun 1, 2018
filing date -
Mar 16, 2018
priority date (Note) -
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Abstract
An electronic device for communicating with an external device includes a connector, a controller, a first switch element, a second switch element, a first voltage source, a second voltage source, a third voltage source, and a fourth voltage source. When the external device is coupled to the connector, the connector receives a device existence voltage from the external device. The controller generates a first control signal and a second control signal according to the device existence voltage. The first switch element couples the first voltage source or the second voltage source to the connector according to the first control signal. The second switch element couples the third voltage source or the fourth voltage source to an output node according to the second control signal.
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