With the increasing demand for volume reduction and efficiency improvement, very high frequency (VHF) power converters (30–300 MHz) have attracted great interest. Under such high operating frequency conditions, the value and volume of passive components can be greatly reduced, and the power density can be improved. However, many concerns and challenges accompany the increasing operating frequency, such as high switching loss, high magnetic components loss and high driving circuit loss. Including various topologies of the VHF converter, this study reviews the state-of-the-art technology involved in the VHF power converter, also encompassing the inverter stage and matching network stage. Secondly, different magnetic components and semiconductor devices were evaluated under the VHF operating condition. Thirdly, the high-efficiency driving methods, such as the resonant driving method and self-resonant driving method, were demonstrated. A guideline for converter design and system optimisation of the VHF converter and related technologies, including all components and systems, is illustrated in this study. Finally, the future research hot spots and challenges have been pointed out as guidance for further advanced VHF power conversion techniques.

中文翻译：

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审查超高频功率转换器和相关技术

随着对减小体积和提高效率的需求不断增加，超高频（VHF）功率转换器（30–300 MHz）引起了人们的极大兴趣。在如此高的工作频率条件下，无源元件的数量和体积可以大大减少，并且功率密度可以提高。但是，工作频率的提高伴随着许多问题和挑战，例如高开关损耗，高磁性元件损耗和高驱动电路损耗。包括VHF转换器的各种拓扑，本研究回顾了VHF功率转换器所涉及的最新技术，还包括逆变器级和匹配网络级。其次，在VHF操作条件下评估了不同的磁性元件和半导体器件。第三，高效率的驾驶方法 说明了共振驱动方法和自共振驱动方法。这项研究说明了VHF转换器和相关技术（包括所有组件和系统）的转换器设计和系统优化指南。最后，指出了未来的研究热点和挑战，可作为进一步先进的VHF功率转换技术的指南。