Dynamic Power Phase Management for SSDs
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Solution Overview
Problem
Existing power management approaches for data storage devices, such as SSDs, are inaccurate and incur power penalties due to inefficient power mode transitions, leading to sub-optimal power utilization and lower device performance.
Innovation Solution
A data storage device with a processor configured to determine peak power for different phases, operate at reduced power consumption within those phases, and adjust subsequent phases based on residual power to maintain average power thresholds, thereby optimizing power usage without unnecessary power mode transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing power management approaches are used to restrict device power usage, then power consumption is controlled, but power utilization becomes sub-optimal and device performance decreases
Solution Approach 1:
The patent implements dynamic power phase transitions instead of static power mode restrictions. The processor dynamically determines when to transition between active and idle phases based on accumulated power usage, allowing the device to adapt its power consumption in real-time while maintaining optimal performance during active phases.
Solution Approach 2:
The patent employs periodic power phasing where the device alternates between active and idle states in controlled cycles. By accumulating power usage over time and transitioning phases periodically based on threshold criteria, the system achieves both power control and sustained performance through rhythmic on-demand operation.
2Use of energy by moving object
If power mode transitions are implemented to manage power consumption, then power usage is restricted, but power penalties are incurred due to inefficient transitions
Solution Approach 1:
The patent performs preliminary power accumulation tracking before transitioning to idle phase. By monitoring and accumulating power usage metrics in advance, the system determines the optimal transition point, avoiding premature transitions that would waste energy and ensuring transitions occur only when power thresholds are genuinely exceeded.
Solution Approach 2:
The patent implements feedback mechanisms where the processor continuously monitors power consumption metrics and adjusts phase transitions accordingly. The accumulated power usage information feeds back into transition decisions, allowing the system to learn from past consumption patterns and optimize transition timing to minimize energy penalties.
3Use of energy by moving object
If existing power management approaches are used, then some power control is achieved, but power utilization accuracy decreases leading to sub-optimal power allocation
Solution Approach 1:
The patent performs preliminary accumulation of power usage metrics across multiple phases before making control decisions. By aggregating power consumption data over time, the system achieves more accurate measurements of actual power utilization, enabling precise control adjustments that reflect true usage patterns rather than instantaneous snapshots.
Solution Approach 2:
The patent employs feedback loops where power consumption measurements are continuously accumulated and fed back into the control algorithm. This feedback mechanism refines the accuracy of power utilization measurements over time, allowing the system to distinguish between temporary spikes and sustained high consumption, thereby optimizing power allocation decisions.
Data Source
AI summary
Methods and apparatus for precise power cycle management in data storage devices are provided. One such apparatus is a data storage device that includes a non-volatile memory (NVM) and a processor coupled to the NVM. In such case, the processor is configured to determine a first peak power for a first power phase, operate the DSD at a first DSD power consumption that is less than the first peak power for the first power phase, determine a second peak power for a second power phase based on a residual power equal to a difference between a preselected average power threshold and the first DSD power consumption, and operate the DSD at a second DSD power consumption that is less than the second peak power for the second power phase.