ABSTRACT This paper presents an implementation of the voltage regulator module (VRM) DC-DC converter operating at 2 MHz using three interleaved switching cells whose outputs are magnetically coupled by monolithic intercell transformers (ICT). The innovation comes from the manufacturing of the ICTs. Spinel ferrite is sintered around two copper windings by pulsed electric current sintering (PECS), also called spark plasma sintering (SPS). The manufacturing processes are detailed in this paper, and the ICTs magnetic properties are measured. The high-frequency operation of the converter has been possible thanks to the implementation of GaN components. The power density of the converter is 15 kW/dm3.

中文翻译：

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带有 GaN 晶体管并与 PECS/SPS 烧结的单片 ICT 耦合的 DC-DC 转换器

摘要 本文介绍了电压调节器模块 (VRM) DC-DC 转换器以 2 MHz 运行的实现，该转换器使用三个交错开关单元，其输出通过单片单元间变压器 (ICT) 进行磁耦合。创新来自于信息通信技术的制造。尖晶石铁氧体通过脉冲电流烧结 (PECS)，也称为放电等离子烧结 (SPS)，在两个铜绕组周围烧结。本文详细介绍了制造过程，并测量了 ICT 的磁性能。由于采用了 GaN 组件，转换器的高频操作成为可能。转换器的功率密度为 15 kW/dm3。