An Integrated On-Chip Flux Concentrator for Galvanic Current Sensing
An Integrated On-Chip Flux Concentrator for Galvanic Current Sensing
复制标题
用于电流感测的集成片上磁通集中器
DOI：
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发表时间：
2018
影响因子：
4.9
通讯作者：
M. M. De Souza
中科院分区：
文献类型：
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作者：
Nagaditya Poluri;M. M. De Souza
提出了一种磁通集中器与电流传感器的片上集成。我们的布局利用了磁通孔中的不连续性，导致磁场穿透到衬底中。通过模拟预测转换因子为96 mT/A，对应于磁增益<inline-formula><tex-math notation="LaTeX">$1.8 与</tex-math></inline-formula>空气相比，所需磁芯的磁导率为500，远低于片外集中器中报道的磁导率，从而显著简化了磁芯材料特性的规格。
On-chip integration of a magnetic flux concentrator with a galvanic current sensor is proposed. Our layout utilizes a discontinuity in a magnetic via, resulting in the penetration of the magnetic field into the substrate. A conversion factor of 96 mT/A is predicted via simulations corresponding to a magnetic gain <inline-formula> <tex-math notation="LaTeX">$1.8 imes $ </tex-math></inline-formula> in comparison with air. The permeability of the magnetic core required is 500, much lower than that reported in off-chip concentrators, resulting in a significant easing of the specifications of the material properties of the core.