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US 2013/0159792 A1Published application
Fault detection
OwnerRobert Brooks, Scott Wright +1inventors
InventorsRobert Brooks, Scott Wright, Ted Nguy
Life of this patent
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Abstract
Embodiments provide methods, apparatuses, and systems for monitoring and communicating power faults. In various embodiments, a first voltage and a second voltage, both associated with an adapter, are monitored. The first voltage may provide system power and the second voltage may identify a capacity of the adapter. In response to detecting a voltage change, a power failure event may be communicated.
Claims20
An apparatus, comprising:
- a detection circuit configured to monitor a first voltage associated with an adapter and a second voltage associated with the adapter, wherein the first voltage provides system power and the second voltage identifies a capacity of the adapter;
- and
- an output coupled to the detection circuit, wherein the output is configured to indicate a power failure in response to the detection circuit detecting a change in the second voltage.
A system, comprising:
- a power rail configured to distribute power;
- power management logic, coupled to the power rail, wherein the power management logic is configured to control a transition of the system between states;
- and
- a detection circuit, coupled to the power management logic, wherein the detection circuit is configured to communicate a power failure to the power management logic based on a change in an identification voltage associated with an adapter, the identification voltage indicating a capacity of the adapter.
1 more element
A method, comprising:
- monitoring, by a detection circuit, a first voltage provided by an adapter and a second voltage associated with an identification pin of the adapter, wherein the first voltage provides system power and the second voltage identifies a capacity of the adapter;
- and
- communicating, by the detection circuit, a power failure event to power management logic in response to detecting a change in either the first voltage or the second voltage.
Dependencies are inferred from the claim text.