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자료유형
학술저널
저자정보
(Seoul National University) (Seoul National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.25 No.2
발행연도
수록면
142 - 147 (6page)
DOI
10.5573/JSTS.2025.25.2.142

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초록· 키워드

Large language models (LLM) and generative artificial intelligence (AI) require extensive data processing and fast data transfer between components, increasing interest in high bandwidth memory (HBM). The high-speed data processing capability of HBM drives the need for next-generation HBM with additional dynamic random access memory (DRAM) layers. However, this increased stacking leads to more severe thermal issues, along with higher power consumption, potentially limiting HBM performance. This study explores these thermal challenges through 3D finite element analysis (FEA) simulations of simplified HBM models incorporating non-conductive film (NCF) layers. Three models with 4, 8, and 12 DRAM layers were simulated and compared. The results show that the maximum simulated temperature reaches 80℃, close to the maximum allowable DRAM temperature, and approaches 110℃, exceeding the recommended operational temperature for HBM. Therefore, this study highlights the potential thermal limitations of highly stacked HBM configurations.
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목차

  1. Abstract
  2. I. INTRODUCTION
  3. II. HBM MODELING AND FEA SIMULATION
  4. III. SIMULATION RESULT AND DISCUSSIONS
  5. IV. CONCLUSIONS
  6. REFERENCES

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