Dynamic TD-PPM state and die mapping in multi-NAND channels
AssigneeWestern Digital Technologies, Inc.
InventorShay Benisty
Life of this patent
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Abstract
A data storage device includes a memory device and a controller coupled to the memory device. The controller and the memory device communicate using a plurality of flash channels, where each channel is mapped to one or more dies of the memory device. Each of the one or more dies of the memory device are associated with one or more strobes of a strobe cycle of a respective flash channel, where a die is provided power during a respective strobe. The controller is configured to, using a time division peak power management (TD-PPM) operation, change an association of a strobe from a first channel to a strobe of a second channel, which may adjust an amount of power provided to each of the channels and improve performance and latency of the data storage device.
Claims20
A data storage device, comprising:
- a memory device having a plurality of dies;
- and
- a controller coupled to the memory device, wherein:
- the coupling comprises a plurality of channels;
- each channel of the plurality of channels comprises a strobe cycle having a plurality of strobes;
- each channel is associated with a distinct one or more dies of the plurality of dies;
- and
- the distinct one or more dies of the plurality of dies are associated with one or more strobes of the plurality of strobes of a strobe cycle, wherein the controller is configured to:
- determine that a first channel requires additional power for one or more dies of the first channel;
- determine that a second channel has unused power for one or more dies of the second channel, wherein one or more strobes associated with the one or more dies of the second channel are distinct from one or more strobes associated with the one or more dies of the first channel;
- and
- remap the unused power from the second channel to the first channel.
A data storage device, comprising:
- a memory device;
- and
- a controller coupled to the memory device, wherein:
- the coupling comprises a plurality of channels;
- each channel of the plurality of channels comprises a strobe cycle having a plurality of strobes;
- each channel is associated with a distinct one or more dies of the plurality of dies;
- and
- the distinct one or more dies of the plurality of dies are associated with one or more strobes of the plurality of strobes of a strobe cycle, wherein the controller is configured to:
- detect a change in a workload of the data storage device;
- adjust one or more time division peak power management (TD-PPM) parameters;
- issue a set feature command to a flash interface module (FIM);
- and
- operate the plurality of channels using the adjusted one or more TD-PPM parameters.
A data storage device, comprising:
- memory means;
- and
- a controller coupled to the memory means, wherein the controller is configured to:
- change an association of a first strobe of a strobe cycle of a first channel associated with a first die of the first channel to a first strobe of the strobe cycle of a second channel associated with a first die of the second channel.
Dependencies are inferred from the claim text.