Memory Device Current Load Management via Dynamic Write Bandwidth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional memory devices face performance limitations due to uncontrolled current consumption, which is influenced by temperature and data dependencies, leading to excessive current loads that exceed specification criteria.
Innovation Solution
Implementing a system to measure and monitor the current load imposed by a memory device, allowing it to dynamically adjust operational performance by restricting write bandwidth based on measured load levels, thereby managing current consumption to meet specification requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If write bandwidth is restricted to limit current consumption, then current consumption is reduced, but performance is degraded
Solution Approach 1:
The patent implements dynamic adjustment of write bandwidth based on real-time current load monitoring. The system continuously measures the current load and dynamically modifies the write bandwidth to match the actual current consumption capacity, rather than using static restriction. This allows the system to maximize performance when current conditions permit while ensuring compliance when limits are approached.
Solution Approach 2:
The patent employs a feedback mechanism where the current load is measured and used to control the write bandwidth. The measured current load feeds back to the control logic that adjusts the write bandwidth, creating a closed-loop system. This feedback ensures that performance limitations are applied only when necessary to meet current consumption specifications.
2Reliability
If conventional current limiting approaches are used, then specification compliance is achieved, but data dependency is not considered
Solution Approach 1:
The patent changes the approach from fixed current limiting to dynamic parameter adjustment. The write bandwidth parameter is continuously adjusted based on measured current load, which varies with temperature and data patterns. This allows the system to adapt to different data dependency scenarios while maintaining specification compliance, rather than applying uniform restrictions.
3Use of energy by moving object
If write bandwidth is restricted whenever temperature is elevated, then current consumption is controlled, but performance is unnecessarily limited
Solution Approach 1:
The system performs self-monitoring of current load and self-adjustment of write bandwidth without external intervention. The memory device autonomously measures its own current consumption and controls its own performance to remain within specifications, eliminating the need for conservative external limiting while ensuring compliance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively limits current load, ensuring memory devices operate within specified criteria by dynamically adjusting operational performance in response to temperature and data dependencies, thereby enhancing performance and compliance with requirements.
Implementation Method 1
The charge pump circuit 102 operates to boost a lower input voltage (Vin) to produce a higher output voltage (Vout)
Implementation Method 2
The output voltage (Vout) is coupled to a decoupling capacitor (Cd) 104
Implementation Method 3
The output voltage is also coupled to a resistor divider 106. The resistor divider 106 divides the output voltage using resistors R1 and R2
Implementation Method 4
A comparator 108 couples to the resistor divider 106 and to a reference voltage (Vref). The output of the comparator 108 is fed back to the charge pump circuit 102 so that the charge pump circuit 102 can regulate the output voltage
Data Source
AI summary
Methods and apparatus for managing electrical loads of electronic devices are disclosed. According to one embodiment, a current load imposed by an electronic device, such as a memory device (or memory system), can be measured. Then, using the measured current load, the memory device can determine whether (and to what extent) operational performance should be limited. By limiting operational performance, the memory device is able to limit its current load so as to satisfy a specification criterion or other requirement. The electrical load management is well suited for use in portable memory products (e.g., memory cards) to manage current loads being drawn.