In this article, a 10-MHz low-profile converter for bendable equipment based on aircore inductor is proposed. The mathematical model and inductance calculation method of the bendable planar circular spiral coil under different bending situations is analyzed. An optimal design method of the T type matching network is depicted in detail which helps to guarantee soft-switching characteristics and high efficiency within the whole bending range by realizing weak inductive equivalent input impedance. A 32 V input, 9V/6.3 W output prototype is proposed in the laboratory and the experimental results verify the feasibility of the proposed optimal design methodology, the system efficiency can be improved by 4% than the traditional method.

中文翻译：

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一种可弯曲设备高频薄型转换器的分析与设计

在本文中，提出了一种基于空心电感的可弯曲设备的 10-MHz 薄型转换器。分析了可弯曲平面圆形螺旋线圈在不同弯曲情况下的数学模型和电感计算方法。详细描述了T型匹配网络的优化设计方法，通过实现弱电感等效输入阻抗，有助于保证整个弯曲范围内的软开关特性和高效率。实验室提出了一个32 V输入、9V/6.3 W输出的样机，实验结果验证了所提出的优化设计方法的可行性，系统效率比传统方法提高4%。