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首页> 外文会议>2008 annual power electronics conference at virginia tech : Proceedings >System Design of a 3D Integrated Non-isolated Point of Load Converter
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System Design of a 3D Integrated Non-isolated Point of Load Converter

机译：3D集成非隔离负载点转换器的系统设计

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摘要

Thermal issues in the design of high-power andrnsmall-size non-isolated Point of Load (POL) converters havernbeen significant and are becoming more so. If a heat sink isrndispensed with, then a large area of multi-layer PCB materialrnwith significant amounts of copper is required for necessaryrncooling. A high-rate cooling fan is also necessary. So what atrnfirst seems like a small and elegant converter becomes bulkyrnand challenging to position in the overall system when itsrnthermal management is taken into account. This work finds arnsolution to these problems and investigates the use of Low-rnTemperature Co-fired Ceramic (LTCC) for integrating therninductor with the active stage. A buck POL is used torndemonstrate these methodologies. The end result is a POLrnconverter that can achieve full 20A output current with nornneed for an external heat sink and no need for a cooling fanrnwhile providing a large step-down of 5V to 1.2V output. Anrnefficiency of 93.5% at light-load and 89% at heavy-load isrnachieved with a high power density of 160W/in3 including allrnthe necessary thermal management, in natural convectionrncondition, has been demonstrated.
机译：大功率和小型非隔离负载点（POL）转换器的设计中的热问题变得越来越重要，而且越来越严重。如果不使用散热器，则需要大量的带有大量铜的多层PCB材料进行必要的冷却。还需要一个高速率的冷却风扇。因此，当考虑其热管理时，首先看起来像是一个小型而优雅的转换器就变得体积庞大，并且难以定位在整个系统中。这项工作找到了解决这些问题的方法，并研究了使用低温共烧陶瓷（LTCC）将电感器与有源级集成在一起的方法。降压POL用于演示这些方法。最终结果是POLrn转换器，无需外部散热片即可实现20A的全输出电流，并且无需冷却风扇，同时提供5V至1.2V的大幅度降压。已经证明，在自然对流条件下，包括所有必要的热管理在内，以160W / in3的高功率密度实现了轻载时93.5％的效率和重载时89％的效率。

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  • 会议地点 Blacksburg VA(US)
  • 作者

    Arthur Ball; Michele Lim; David Gilham; Fred C. Lee;

  • 作者单位

    Center for Power Electronics SystemsrnThe Bradley Department of Electrical and Computer EngineeringrnVirginia Polytechnic Institute and State UniversityrnBlacksburg, VA 24061 USA;

    Center for Power Electronics SystemsrnThe Bradley Department of Electrical and Computer EngineeringrnVirginia Polytechnic Institute and State UniversityrnBlacksburg, VA 24061 USA;

    Center for Power Electronics SystemsrnThe Bradley Department of Electrical and Computer EngineeringrnVirginia Polytechnic Institute and State UniversityrnBlacksburg, VA 24061 USA;

    Center for Power Electronics SystemsrnThe Bradley Department of Electrical and Computer EngineeringrnVirginia Polytechnic Institute and State UniversityrnBlacksburg, VA 24061 USA;

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