Interface connection control based on voltage at input rail

摘要

Embodiments herein relate to controlling a connection to an interface. In an embodiment, a protection circuit is to detect a voltage at an input rail of a regulator, where the regulator is to provide power to a peripheral device via an interface. Next, the protection circuit is to compare the detected voltage to a reference voltage. Then, the protection circuit is to generate a detection signal based on the comparison. Lastly, the protection circuit is to disable a connection between the regulator and the interface based on the detection signal.

主权项

1. A method for controlling a connection to an interface using a protection circuit, comprising:
detecting a voltage at an input rail of a regulator, the regulator to provide power to a peripheral device via the interface; comparing the detected voltage to a reference voltage; outputting a detection signal based on the comparison; and disabling a connection between the regulator and the interface based on the detection signal, wherein the interface receives a current from the peripheral device if a voltage at a first terminal of the peripheral device exceeds a voltage at a second terminal of the interface.