Power sense output
AssigneeHewlett Packard Enterprise Development LP
InventorsVincent W. Michna, Peter Hansen, Julie Victoria Tan
Life of this patent
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Abstract
Examples disclosed herein relate to determining a power sense output based on a current sense line and a voltage sense line. A first stage circuit has a first voltage input of the current sense line of a server. The first stage circuit also has a feedback voltage input based on an output voltage of the first stage circuit and a variable resistance value based on the voltage sense line of the server. A second stage circuit is used to buffer the first output voltage to yield a second output voltage. A third stage circuit yields a power sense output based on a difference between the second output voltage and the first voltage input.
Claims20
A computing system comprising:
- a first stage circuit with a first voltage input of a current sense line of a server and a first feedback voltage input based on a first output voltage of the first stage circuit and a variable resistance value based on a voltage sense line of the server;
- a second stage circuit to buffer the first output voltage to yield a second output voltage;
- and
- a third stage circuit that yields a power sense output based on a difference between the second output voltage and the first voltage input.
A computing system comprising:
- an enclosure;
- and
- a plurality of servers, wherein each server includes:
- a first stage circuit with a first voltage input of a current sense line of the respective server and a first feedback voltage input based on an first output voltage of the first stage circuit and a voltage controlled resistor based on a voltage sense line of the respective server;
- a second stage circuit to buffer the first output voltage to yield a second output voltage;
- and
- a third stage circuit that yields a power sense output based on a difference between the second output voltage and the first voltage input.
A method comprising:
- receiving, at a first stage circuit, a first voltage input of a current sense line of a server and a first feedback voltage input based on a first output voltage of the first stage circuit, a variable resistance value from a voltage controlled resistor controlled by a voltage sense line of the server, and a known resistance value of a resistor;
- buffering, at a second stage circuit, the first output voltage to yield a second output voltage;
- determining a power sense output based on a difference between the second output voltage and the first voltage input;
- providing the power sense output to a controller engine;
- and
- determining a digital representation of the power sense output by the controller engine.
Dependencies are inferred from the claim text.