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引用次数: 0
摘要
本文提出了一种新型两相高降压直流-直流转换器。该转换器源自两相串联电容器转换器。所提出的转换器用一种新结构取代了串联电容器，这种新结构融合了谷值填充电路和耦合电感器的概念。这种替换可以提高转换器的电压增益，并大大降低二极管的电压应力。拟议的结构使用单个磁性元件实现了双相降压。此外，所提出的结构无需任何额外的钳位电路，就能从本质上限制耦合电感器漏感引起的电压尖峰。对所提出的转换器进行了分析，并提供了设计指南。为了证明电路运行和理论分析的正确性，我们实现了一个 300-24 V 的原型转换器。
Very high step-down coupled inductor two-phase buck converter with single magnetic element and inherent clamp voltage capability
This paper proposed a new two-phase high step-down DC–DC converter is proposed. This converter is derived from the two-phase series-capacitor converter. The proposed converter replaces the series capacitor with a new structure that integrates Valley-Fill circuit and coupled-inductors concepts. This replacement can improve the voltage gain of the converter as well as a considerable reduction of diodes voltage stress. The proposed structure implements a dual-phase buck using a single magnetic element. Also, the proposed structure inherently limits the voltage spikes due to the leakage inductance of coupled inductors without any additional clamp circuit. The proposed converter is analyzed, and design guidelines are provided. A 300–24 V prototype converter is implemented to justify the validity of circuit operation and the theoretical analysis.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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