Data storage device with closed loop extended park mode during spin down operation
AssigneeWestern Digital Technologies, Inc.
InventorsBrian Johnson, Jaesoo Byoun, Gaku Ikedo, Hideaki Ito, Naoyuki Kagami
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Abstract
A data storage device has a closed loop extended park mode during spin down operation. A data storage device comprises a spindle motor configured to rotate one or more disks, and one or more processing devices. The one or more processing devices are configured to determine a value of current that is discharged from the spindle motor over time during a spin down of the spindle motor, and control a braking duty cycle for braking the spindle motor during the spin down such that the value of current discharged from the spindle motor over time does not exceed a selected current limit.
Claims20
A data storage device comprising:
- a spindle motor configured to rotate one or more disks;
- and
- one or more processing devices configured to:
- determine a value of current that is discharged from the spindle motor over time during a spin down of the spindle motor;
- and
- control a braking duty cycle for braking the spindle motor during the spin down such that the value of current discharged from the spindle motor over time does not exceed a selected current limit.
A method comprising:
- determining, by one or more processing devices, a value of current that is discharged from a spindle motor of a data storage device over time during a spin down of the spindle motor;
- and
- controlling, by the one or more processing devices, a braking duty cycle for braking the spindle motor during the spin down such that the value of current discharged from the spindle motor over time does not exceed a selected current limit.
One or more processing devices comprising:
- means for determining a value of current that is discharged from a spindle motor of a data storage device over time during a spin down of the spindle motor;
- and
- means for controlling a braking duty cycle for braking the spindle motor during the spin down such that the value of current discharged from the spindle motor over time does not exceed a selected current limit.
Dependencies are inferred from the claim text.