# US 2023/0058022 A1 · Storage device and power management method thereof

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- Number: US 2023/0058022 A1
- Document ID: US20230058022A1
- Status: Published application
- Kind: A1
- Application number: 17/576,660
- Filed: 2022-01-14
- Published: 2023-02-23
- Earliest claimed: 2021-08-18
- Assignees: SK hynix Inc.
- Applicants: SK hynix Inc.
- Inventors: Seung Hyun CHUNG
- Web page: https://patentgrep.com/patent/US20230058022A1

## CPC

- G06F 3/0634: {by changing the state or mode of one or more devices}
- G06F 3/0604: {Improving or facilitating administration, e.g. storage management}
- G06F 3/0625: {Power saving in storage systems}
- G06F 3/0652: {Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket}
- G06F 3/0653: {Monitoring storage devices or systems}
- G06F 3/0659: {Command handling arrangements, e.g. command buffers, queues, command scheduling}
- G06F 3/0679: {Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]}
- G06F 3/0688: {Non-volatile semiconductor memory arrays}
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A storage device, and a method of operating the storage device, includes a plurality of memory devices configured to store peak power information including information about a plurality of peak power periods and information about IDs respectively corresponding to the plurality of peak power periods. The storage device also includes a memory controller configured to assign an ID to each of the plurality of memory devices and control the memory devices so that one or more memory devices having an identical ID corresponding to a target period, among the plurality of peak power periods, perform a memory operation at peak power.

## Claims

### Claim 1

A storage device, comprising:
a plurality of memory devices configured to store peak power information including information about a plurality of peak power periods and information about identifications (IDs) respectively corresponding to the plurality of peak power periods; and
a memory controller configured to assign an ID to each of the plurality of memory devices and control the memory devices so that one or more memory devices having an identical ID corresponding to a target period, among the plurality of peak power periods, perform a memory operation at peak power.

### Claim 2 (depends on 1)

The storage device according to claim 1, wherein the memory controller comprises:
an operation controller configured to provide a memory operation command for instructing the memory operation to each of the plurality of memory devices; and
a power controller configured to provide a peak power setting command for setting the plurality of peak power periods and the IDs respectively corresponding to the plurality of peak power periods to each of the plurality of memory devices.

### Claim 3 (depends on 2)

The storage device according to claim 2, wherein the power controller is configured to provide a peak power operation command for instructing a peak power operation mode to be activated or deactivated to memory devices selected from among the plurality of memory devices.

### Claim 4 (depends on 3)

The storage device according to claim 3, wherein each of the plurality of memory devices is configured to store the peak power information in response to the peak power setting command.

### Claim 5 (depends on 4)

The storage device according to claim 4, wherein each of the plurality of memory devices is configured to, when the peak power operation mode is activated in response to the peak power operation command, perform the memory operation at the peak power during the target period based on target period information, which indicates the target period and is included in the peak power information, in response to the memory operation command.

### Claim 6 (depends on 1)

The storage device according to claim 1, wherein the memory controller is configured to assign an identical ID to at least two memory devices, among the plurality of memory devices.

### Claim 7 (depends on 1)

The storage device according to claim 1, wherein the plurality of memory devices are coupled to the memory controller through only one channel.

### Claim 8 (depends on 1)

The storage device according to claim 1, wherein the memory operation includes at least one of a read operation, a write operation, and an erase operation.

### Claim 9

A memory device, comprising:
a plurality of memory cells;
a peripheral circuit configured to perform a memory operation on the plurality of memory cells;
a power management information storage configured to store peak power information including information about a plurality of peak power periods and information about identifications (IDs) respectively corresponding to the plurality of peak power periods; and
an operation processor configured to control the peripheral circuit so that the memory operation is performed at peak power during a target period corresponding to an ID assigned to the memory device, among the plurality of peak power periods.

### Claim 10 (depends on 9)

The memory device according to claim 9, wherein the power management information storage comprises:
a peak period information storage configured to store the peak power information in response to a peak power setting command that sets the peak power information and that is received from a memory controller; and
an ID information storage configured to store ID information indicating the assigned ID received from the memory controller.

### Claim 11 (depends on 10)

The memory device according to claim 10, wherein the power management information storage is configured to provide target period information that indicates the target period and is included in the peak power information, to the operation processor.

### Claim 12 (depends on 11)

The memory device according to claim 11, wherein the operation processor is configured to control the peripheral circuit so that the memory operation is performed at peak power during the target period based on the target period information in response to a memory operation command that instructs the memory operation and that is received from the memory controller.

### Claim 13 (depends on 9)

The memory device according to claim 9, wherein the power management information storage is configured to be activated when it receives a command for activating a peak power operation mode from the memory controller.

### Claim 14 (depends on 9)

The memory device according to claim 9, wherein the memory operation includes at least one of a read operation, a write operation, and an erase operation.

### Claim 15

A method of operating a memory device, comprising:
receiving, from a memory controller, a peak power setting command for setting peak power information, wherein the peak power information includes information about a plurality of peak power periods and information about identifications (IDs) respectively corresponding to the plurality of peak power periods;
storing the peak power information;
storing the ID information in response to an ID assignment command received from the memory controller;
receiving a memory operation command from the memory controller; and
performing a memory operation at the peak power during a target period corresponding to an assigned ID indicated by the ID information, among the plurality of peak power periods, in response to the memory operation command.

### Claim 16 (depends on 15)

The method according to claim 15, further comprising:
receiving a peak power operation command for instructing a peak power operation mode to be activated or deactivated from the memory controller.

### Claim 17 (depends on 16)

The method according to claim 16, wherein performing the memory operation at the peak power comprises:
performing the memory operation at the peak power during the target period based on the peak power information in response to the peak power operation command.

### Claim 18 (depends on 15)

The method according to claim 15, wherein the memory operation includes at least one of a read operation, a write operation, and an erase operation.