ELECTRONIC DEVICE AND POWER PROTECTION METHOD

摘要

An electronic device and a power protection method are provided. The electronic device includes a transfer port, a switch, a first detecting unit and a second detecting unit. The transfer port provides a driving voltage to an external device. The switch is coupled between the transfer port and a supply power source, and the switch is selectively turned off according to at least one of a first control signal and a second control signal. The first detecting unit generates the first control signal when a voltage drop of the driving voltage exceeds a threshold voltage. The second detecting unit generates a sampling voltage by detecting the driving voltage and generates the second control signal when the sampling voltage is lower than a first reference voltage. The electronic device can provide a power protection when an external device is plugged in/out the transfer port.

主权项

1. An electronic device, comprising:
a transfer port providing a driving voltage to an external device; a first switch coupled between the transfer port and a supply power source, wherein the first switch is selectively turned off according to at least one of a first control signal and a second control signal; a first detecting unit generating the first control signal when a voltage drop of the driving voltage exceeds a threshold voltage; and a second detecting unit detecting the driving voltage and generating a sampling voltage and generating the second control signal when the sampling voltage is lower than a first reference voltage.