Upstream device overvoltage detection with deactivation of downstream device power
AssigneeIntel Corporation
InventorKok Hong Chan
Life of this patent
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Abstract
For one disclosed embodiment, a controller comprises communication circuitry to communicate over one or more data lines with a downstream device external to an upstream device having the controller and detection circuitry to detect on at least one of the one or more data lines a voltage having a value in excess of a reference value. The detection circuitry is to deactivate a supply of power over one or more power lines to the downstream device in response to detection on at least one of the one or more data lines of a voltage having a value in excess of the reference value. Other embodiments are also disclosed.
Claims21
A controller comprising:
- communication circuitry to communicate over one or more data lines with a downstream device external to an upstream device having the controller;
- and
- detection circuitry to detect on at least one of the one or more data lines a voltage having a value in excess of a reference value,
- the detection circuitry to deactivate a supply of power over one or more power lines to the downstream device in response to detection on at least one of the one or more data lines of a voltage having a value in excess of the reference value.
A method comprising:
- communicating over one or more data lines between an upstream device and a downstream device external to the upstream device;
- detecting on at least one of the one or more data lines a voltage having a value in excess of a reference value;
- and
- deactivating a supply of power over one or more power lines to the downstream device in response to detection on at least one of the one or more data lines of a voltage having a value in excess of the reference value.
A system comprising:
- a circuit board;
- power supply circuitry supported by the circuit board to supply power over one or more power lines to a downstream device external to an upstream device having the system;
- and
- a controller supported by the circuit board, the controller including communication circuitry and detection circuitry,
- the communication circuitry to communicate over one or more data lines with the downstream device, and
- the detection circuitry to detect on at least one of the one or more data lines a voltage having a value in excess of a reference value,
- the detection circuitry to deactivate the power supply circuitry from supplying power over one or more power lines to the downstream device in response to detection on at least one of the one or more data lines of a voltage having a value in excess of the reference value.
A system comprising:
- a processor;
- an alternating current to direct current (AC-DC) converter;
- power supply circuitry coupled to the AC-DC converter to supply power over one or more power lines to a downstream device external to the system;
- and
- a controller including communication circuitry and detection circuitry,
- the communication circuitry to communicate over one or more data lines with the downstream device, and
- the detection circuitry to detect on at least one of the one or more data lines a voltage having a value in excess of a reference value,
- the detection circuitry to deactivate the power supply circuitry from supplying power over one or more power lines to the downstream device in response to detection on at least one of the one or more data lines of a voltage having a value in excess of the reference value.
Dependencies are inferred from the claim text.