Memory Module Interposer Thermal Isolation Design
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Solution Overview
Problem
Conventional data processing systems face performance degradation and increased power consumption due to direct heat application from memory controllers to memory chips, which is exacerbated in AI, VR, or AR environments, leading to reduced operation performance and higher power usage.
Innovation Solution
A memory module and data processing system design where memory chips and controllers are not directly connected, with an interposer separating them, and a symmetrical arrangement with air cooling spaces to minimize heat influence, allowing for efficient cooling without a separate cooling system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If memory chips are directly connected to memory controller, then device complexity is reduced, but heat generated by memory controller directly affects memory chips causing performance degradation
Solution Approach 1:
An interposer is introduced as an intermediary component between the memory controller and memory chips. The interposer provides thermal isolation while maintaining electrical connectivity, preventing direct heat transfer from the memory controller to the memory chips while preserving the functional connection.
Solution Approach 2:
The system is segmented into distinct thermal zones by positioning memory chips at opposite ends of the interposer away from the memory controller. This spatial segmentation creates thermal separation while maintaining electrical connectivity through the interposer's conductive pathways.
2Temperature
If cooling system is applied to reduce heat generation, then temperature is reduced, but power consumption is increased
Solution Approach 1:
The interposer converts the harmful thermal conduction pathway into a beneficial thermal management feature by using its low thermal conductivity to naturally isolate heat. The same material property that enables electrical connectivity also provides thermal isolation, eliminating the need for active cooling systems.
Solution Approach 2:
The interposer's material properties inherently provide thermal management functionality without requiring external power. The low thermal conductivity of the interposer material automatically prevents heat transfer from the memory controller to the memory chips, creating a passive thermal isolation system.
3Quantity of substance
If memory chips are stacked vertically over memory controller, then integration density is improved, but heat concentration is increased
Solution Approach 1:
The memory chips are positioned in the vertical dimension (stacked configuration) while the thermal management solution operates in the horizontal dimension by extending the interposer length. This allows high integration density vertically while maintaining thermal separation horizontally through the elongated interposer structure.
Data Source
AI summary
A memory module may include: a plurality of stacked memory chips; a memory controller; and an interposer connected between the plurality of memory chips and the memory controller.