Administering offset voltage error in a current sensing circuit
AssigneeInternational Business Machines Corporation
InventorsNicholas Celenza, Ismael Orozco Biaggi
Life of this patent
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Abstract
Administering offset voltage error in a current sensing circuit including recording by a power supply management module a current sensing voltage for a power supply when no operating load is drawn from the power supply and dynamically calculating by the power supply management module output current of the power supply with an active load in dependence upon the recorded current sensing voltage.
Claims15
A method of administering offset voltage error in a current sensing circuit, the method comprising:
- recording by a power supply management module a current sensing voltage for a power supply when no operating load is drawn from the power supply, wherein the power supply further comprises a plurality of independent power output channels and the current sensing circuit further comprises a summing amplifier configured to sum channel sensing voltages of the channels, wherein each channel sensing voltage represents the output current of each output channel;
- and
- dynamically calculating by the power supply management module output current of the power supply with an active load in dependence upon the recorded current sensing voltage.
An apparatus for administering offset voltage error in a current sensing circuit, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions capable of:
- recording by a power supply management module a current sensing voltage for a power supply when no operating load is drawn from the power supply, wherein the power supply further comprises a plurality of independent power output channels and the current sensing circuit further comprises a summing amplifier configured to sum channel sensing voltages of the channels, wherein each channel sensing voltage represents the output current of each output channel;
- and
- dynamically calculating by the power supply management module output current of the power supply with an active load in dependence upon the recorded current sensing voltage.
A computer program product for administering offset voltage error in a current sensing circuit, the computer program product disposed in a recordable computer readable storage medium, the computer program product comprising computer program instructions capable of:
- recording by a power supply management module a current sensing voltage for a power supply when no operating load is drawn from the power supply, wherein the power supply further comprises a plurality of independent power output channels and the current sensing circuit further comprises a summing amplifier configured to sum channel sensing voltages of the channels, wherein each channel sensing voltage represents the output current of each output channel;
- and
- dynamically calculating by the power supply management module output current of the power supply with an active load in dependence upon the recorded current sensing voltage.
Dependencies are inferred from the claim text.