Memory Units Share Operation Types to Optimize Power Management
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Solution Overview
Problem
Existing power management schemes in memory devices often limit the number of high current events that can be performed simultaneously, leading to underutilization and reduced system performance due to the assumption of worst-case current spikes from unknown operation types.
Innovation Solution
Implementing a system where memory units communicate their operation types via a shared power management signal, allowing each unit to determine whether to delay or perform operations based on current thresholds, thereby optimizing power management and reducing unnecessary delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power management schemes limit the quantity of high current events that can be simultaneously performed, then current threshold limits are maintained, but system performance deteriorates due to underutilization of idle capacity
Solution Approach 1:
The patent implements a feedback mechanism where memory units monitor and communicate their operation types and current consumption levels to a controller. The controller uses this feedback information to dynamically adjust power management decisions, allowing simultaneous execution of multiple high current events when total current remains within thresholds, thereby resolving the contradiction between maintaining current limits and maximizing system performance
Solution Approach 2:
The patent transitions from static power management (fixed limits on concurrent high current events) to dynamic power management (real-time adjustment based on actual operation types and current levels). The controller continuously evaluates the sum of current levels from multiple memory units and dynamically permits or denies simultaneous operations based on whether the total remains within the current threshold, optimizing both reliability and productivity
2Reliability
If memory units assume worst-case current spikes from unknown operation types, then current threshold compliance is ensured, but idle capacity is underutilized due to unnecessary delays
Solution Approach 1:
Memory units provide feedback to the controller about their actual operation types and associated current levels. This eliminates the need to assume worst-case scenarios, as the controller receives accurate information about actual power consumption. The controller uses this feedback to make informed decisions about permitting simultaneous operations, allowing memory units to proceed without unnecessary delays when current levels are known to be within thresholds
Solution Approach 2:
The patent changes the parameter information available to the power management system from unknown (requiring worst-case assumptions) to known (through operation type communication). By encoding and transmitting operation type information, the system transforms the power management decision-making process from conservative estimation to precise calculation, reducing unnecessary delays while maintaining current threshold compliance
Data Source
AI summary
The present disclosure includes apparatuses and methods for providing indications associated with power management events. An example apparatus may include a plurality of memory units coupled to a shared power management signal. In this example apparatus, each of the plurality of memory units may be configured to provide to the other of the plurality of memory units, via the shared power management signal, an indication of whether the one of the plurality of memory units is entering a power management event. Further, each of the plurality of memory units may be configured to, if the one of the plurality of memory units is entering the power management event, an indication of a particular operation type associated with the power management event.