Y. Won, Jungwan Cho, D. Agonafer, M. Asheghi, K. Goodson
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引用次数: 46
摘要
GaN HEMT技术的峰值功率密度受到从结到环境的热阻等级的限制。在这里,我们探讨了先进的热管理技术,包括gan -金刚石复合材料和纳米工程散热器,使最终或基本的冷却极限成为可能。通过对近结电阻和极端磁通对流的持续关注,可能在5年内实现超过50 kW/cm2的功率密度(取决于栅极宽度和热点尺寸)。
The peak power density of GaN HEMT technology is limited by a hierarchy of thermal resistances from the junction to the ambient. Here we explore the ultimate or fundamental cooling limits made possible by advanced thermal management technologies including GaN-diamond composites and nanoengineered heat sinks. Through continued attention to near-junction resistances and extreme flux convection, power densities that may exceed 50 kW/cm2 - depending on gate width and hotspot dimension - are feasible within 5 years.