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首页> 外文学位 >On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters.
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On-Chip Transformer Design and Modeling for Fully Integrated Isolated DC/DC Converters.

机译：完全集成的隔离式DC / DC转换器的片上变压器设计和建模。

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摘要

Isolated DC/DC converters are used to provide electrical isolation between two supply domain systems. A fully integrated isolated DC/DC converter having no board-level components and fabricated using standard integrated circuits (IC) process is highly desirable in order to increase the system reliability and reduce costs. The isolation between the low-voltage side and high-voltage side of the converter is realized by a transformer that transfers energy while blocking the DC loop. The resonant mode power oscillator is used to enable high efficiency power transfer. The on-chip transformer is expected to have high coil inductance, high quality factors and high coupling coefficient to reduce the loss in the oscillation. The performance of a transformer is highly dependent on the vertical structure, horizontal geometry and other indispensable structures that make it compatible with the IC process such as metal fills and patterned ground shield (PGS). With the help of three-dimensional (3-D) electro-magnetic (EM) simulation software, the 3-D transformer model is simulated and the simulation result is got with high accuracy.;In this thesis an on-chip transformer for a fully integrated DC/DC converter using standard IC process is developed. Different types of transformers are modeled and simulated in HFSS. The performances are compared to select the optimum design. The effects of the additional structures including PGS and metal fills are also simulated. The transformer is tested with a network analyzer and the testing results show a good consistency with the simulation results when taking the chip traces, printed circuit board (PCB) traces, bond wires and SMA connectors into account.
机译：隔离式DC / DC转换器用于在两个电源域系统之间提供电隔离。为了提高系统可靠性并降低成本，非常需要一种完全集成的隔离式DC / DC转换器，它不具有板级组件并且使用标准集成电路（IC）工艺制造。转换器的低压侧和高压侧之间的隔离是通过变压器实现的，该变压器在阻断直流回路的同时传递能量。谐振模式功率振荡器用于实现高效功率传输。片上变压器有望具有高线圈电感，高品质因数和高耦合系数，以减少振荡损耗。变压器的性能高度依赖于垂直结构，水平几何形状以及使其与IC工艺兼容的其他必不可少的结构，例如金属填充物和图案化接地屏蔽（PGS）。借助于三维（3-D）电磁仿真软件，对3-D变压器模型进行仿真，得到了较高的仿真结果。开发了使用标准IC工艺的全集成DC / DC转换器。在HFSS中对不同类型的变压器进行建模和仿真。比较性能以选择最佳设计。还模拟了其他结构（包括PGS和金属填充物）的效果。在考虑了芯片走线，印刷电路板（PCB）走线，键合线和SMA连接器的情况下，使用网络分析仪对变压器进行了测试，测试结果与仿真结果具有很好的一致性。

著录项

  • 作者

    Zhao, Yao.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Engineering Electronics and Electrical.;Engineering Computer.
  • 学位 M.S.
  • 年度 2014
  • 页码 60 p.
  • 总页数 60
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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