Abstract The increase in active component switching frequency, via GaN technology, allows downscaling the inductor size as soon as the magnetic core-losses are controlled. However frequency induced dissipations in the magnetic material will create thermal heating, consequently complex core shapes allowing a better thermal exchange are needed. Here we propose a specific dimensioning methodology to determine the best form factor to optimise the exchange surface and verify constraints on the inductor. An inductor made of NiZn spinel ferrite powder has been manufactured by tape casting using results of calculations based on magnetic core-loss measurements.

中文翻译：

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功率转换器电感器的尺寸和形状

摘要 通过 GaN 技术提高有源元件开关频率，一旦磁芯损耗得到控制，就可以缩小电感器的尺寸。然而，磁性材料中的频率感应耗散会产生热量，因此需要允许更好的热交换的复杂磁芯形状。在这里，我们提出了一种特定的尺寸设计方法来确定最佳形状因子以优化交换表面并验证对电感器的约束。使用基于磁芯损耗测量的计算结果，通过流延法制造了由 NiZn 尖晶石铁氧体粉末制成的电感器。