推挽式电流馈电多输出调节宽输入范围DC/DC功率变换器,只有一个电感,开关占空比为0到100%:工作在占空比低于50%

R. Redl, N. Sokal
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引用次数: 18

摘要

该电路对任意数量的输出只有一个电感,一个变压器,对变压器电压-秒不平衡的灵敏度很低,只有两个电源开关,并且不需要两个电源开关级联。它适用于从0到<100%的开关占空比(降压或升压动作),可适应非常宽的输入电压范围。先前的一篇论文[2]给出了占空比为50%或更高(类似升压的操作)时运行的设计方程。该分析在这里扩展到包括50%以下的占空比(buck-like operation)。介绍了该电路的特殊特点,并给出了最重要的设计方程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Push-pull current-fed multiple-output regulated wide-input-range DC/DC power converter with only one inductor and with 0 to 100% switch duty ratio: operation at duty ratio below 50%
The circuit has only one inductor for any number of outputs, one transformer and low sensitivity to transformer volt-second unbalance, only two power switches, and no need for two power switches in cascade. It is suitable for operation from 0 to <100% switch duty ratio (buck-like or boost-like action), accomodating a very wide range of input voltage. A previous paper [2] gave design equations for operation at duty ratios of 50% or more (boost-like operation). That analysis is extended here to include duty ratios below 50% (buck-like operation). Unusual features of the circuit are described and the most-important design equations are presented.
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