Dual-Sided HBM Interface Layout for Heat and Bandwidth Scaling
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Solution Overview
Problem
Current high-bandwidth memory (HBM) devices face challenges in meeting increasing functionality demands while reducing package size, leading to heat generation and inadequate bandwidth distribution due to IO circuits being disposed on a single side, which causes localized hot spots and longer communication routes.
Innovation Solution
Implementing a dual-sided HBM device with IO circuits on both sides of the interface die to distribute heat generation, reduce communication route lengths, and enable concurrent access by multiple host devices through partitioned memory and multiple IO interfaces operating under different standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If IO circuits are disposed on a single side of the interface die, then device complexity is reduced, but heat generation becomes localized and communication route lengths increase
Solution Approach 1:
The interface die is segmented into multiple sides, with IO circuits distributed across different sides rather than concentrated on one side. This segmentation of the IO circuit placement resolves the technical contradiction by dividing the heat-generating elements across multiple locations, preventing localized hot spots while maintaining manageable device complexity through systematic distribution.
Solution Approach 2:
The IO circuits are arranged in a multi-dimensional configuration across different sides of the interface die rather than being confined to a single plane or side. This dimensional redistribution of IO circuits allows heat to be dispersed across multiple surfaces, reducing localized temperature increases while preserving device complexity at acceptable levels.
2Device complexity
If IO circuits are disposed on a single side of the interface die, then device complexity is reduced, but communication route lengths increase
Solution Approach 1:
The interface die is segmented into multiple sides with IO circuits distributed across these sides. This segmentation allows communication routes to be shortened by placing IO circuits closer to their respective access points on different sides, reducing overall communication route lengths while maintaining device complexity at manageable levels through systematic distribution.
Solution Approach 2:
IO circuits are positioned across multiple sides of the interface die, utilizing the three-dimensional space available in the package. This dimensional arrangement reduces communication route lengths by placing IO circuits nearer to their access points, while device complexity remains controlled through organized multi-sided distribution.
3Productivity
If bandwidth is increased to meet market demands, then productivity is improved, but heat generation increases
Solution Approach 1:
The high-bandwidth communication pathways are segmented and distributed across multiple sides of the interface die rather than concentrated in a single location. This segmentation of bandwidth pathways allows high productivity through increased bandwidth while dispersing heat generation across multiple areas, preventing excessive temperature increases in any single location.
4Volume of moving object
If package size is reduced to meet market demands, then volume is improved, but heat dissipation becomes more difficult
Solution Approach 1:
Heat dissipation is enhanced by distributing heat-generating IO circuits across multiple sides of the interface die, utilizing the external surfaces of the compact package. This dimensional distribution of heat sources across multiple faces of the small package improves heat dissipation efficiency despite the reduced overall package volume, as heat can escape through multiple surfaces simultaneously.
Data Source
AI summary
System-in-Package (SiP) devices and associated systems and methods are disclosed herein. In some embodiments, a SiP device includes a high-bandwidth memory (HBM) device communicably coupled to a plurality of host devices. The HBM device is communicably coupled to the plurality of host devices via a plurality of correlated input/output (IO) circuits. Each of the plurality of IO circuits is disposed on a different side of an interface die of the HBM device. Each of the plurality of IO circuits can be configured to operate according to standards and protocols appropriate for the correlated host device. The HBM device further includes multiple pluralities of through-substrate vias (TSVs), of which each plurality of TSVs is correlated with one of the plurality of host devices. A memory of the HBM device can be partitioned such that each of the memory partitions is accessible by one of the plurality of host devices.