Assembly of MCM thermal solution utilizing individual heat spreaders

D. Edwards, R. Hering, D.C. Long, S. Singh
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Abstract

Some recent IBM UNIX servers use multi-chip modules (MCMs) with multi-core processor chips with very high power densities, requiring aggressive thermal solutions. The thermal solution includes flip chips with individually attached heat spreaders. Because of the difficulty of reworking the thermal solution, and the high value of the module at the time the cooling solution is assembled, very high assembly yields were required. This drove new technologies, and new processes to enable assembly of highly efficient cooling structures with very high yields. This paper addresses the challenges of assembling the heat spreader cooling solution, and describes how these challenges were overcome
利用单个散热器组装MCM热解决方案
最近的一些IBM UNIX服务器使用具有非常高功率密度的多核处理器芯片的多芯片模块(mcm),需要积极的散热解决方案。热解决方案包括带有单独连接的散热器的倒装芯片。由于重新加工热溶液的困难,以及在冷却溶液组装时模块的高值,因此需要非常高的组装成品率。这推动了新技术和新工艺的发展,使高效冷却结构的组装具有非常高的产量。本文解决了组装散热器冷却解决方案的挑战,并描述了如何克服这些挑战
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