A new topology for achieving high leakage inductance in inserted-shunt integrated magnetic planar transformers is proposed. In the proposed topology, two one-segment shunts are placed across the planar E-core air gap and between the primary and secondary windings. The proposed topology benefits using solid inexpensive ferrite shunts, making manufacturing easier. A detailed mathematical model is derived from which a design methodology is developed, providing accurate estimation for the leakage and magnetising inductances. The theoretical analysis has been verified using finite-element analysis and experimental implementation. AC resistance analysis and efficiency comparison are also presented for the proposed topology and a recent topology with inserted-segmental-shunt, which shows the proposed topology provides higher efficiency because of lower AC resistance. In addition, an isolated LLC resonant converter is designed and built to investigate the performance of the proposed topology in practice. The three magnetic components needed for the designed LLC resonant converter is integrated in a single planar transformer using the proposed topology and the converter operates properly.

中文翻译：

---

适用于 LLC 谐振转换器的全集成固态并联平面变压器


提出了一种在插入并联集成磁性平面变压器中实现高漏感的新拓扑。在所提出的拓扑中，两个单段分流器放置在平面 E 型磁芯气隙上以及初级和次级绕组之间。所提出的拓扑结构有利于使用固体廉价铁氧体分流器，从而使制造更容易。导出详细的数学模型，并据此开发设计方法，为漏电感和磁化电感提供准确的估计。理论分析已通过有限元分析和实验实施得到验证。还对所提出的拓扑和具有插入分段分流器的最新拓扑进行了交流电阻分析和效率比较，这表明所提出的拓扑由于较低的交流电阻而提供了更高的效率。此外，还设计并构建了一个隔离式 LLC 谐振转换器，以研究所提出的拓扑在实践中的性能。所设计的 LLC 谐振转换器所需的三个磁性组件使用所提出的拓扑集成在单个平面变压器中，并且转换器正常运行。