| 单输出有源钳位正激DC-DC变换器设计 |
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| 引用本文： | 李康艺,王兴蔚,龚军勇,张怀武. 单输出有源钳位正激DC-DC变换器设计[J]. 磁性材料及器件, 2010, 41(5) |
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| 作者姓名： | 李康艺 王兴蔚 龚军勇 张怀武 |
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| 作者单位： | 电子科技大学,电子薄膜与集成器件国家重点实验室,四川成都,610054 |
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| 摘 要： | <正>激式DC-DC变换器的固有缺点是需要增加辅助电路来实现磁复位,MOS管的硬开通模式使变换器的效率低下。有源钳位可以回收励磁电感中的能量至输入端,初级开关管的软开关将MOS管的开关损耗降到最低。本文以一个设计示例讨论了变压器和电感在有源钳位变换器中的设计。结果表明,在24V输入电压时效率超过90%,负载调整率也在1.3%以内,验证了单路输出有源钳位正激DC-DC拓扑变换器良好的负载调整率以及高效性。
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| 关 键 词： | DC-DC变换器 有源钳位 软开关 同步整流 |
Design of Single Ended Output DC-DC Convertor With Active Clamp Forward Topology |
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| LI Kang-yi,WANG Xing-wei,GONG Jun-yong,ZHANG Huai-wu. Design of Single Ended Output DC-DC Convertor With Active Clamp Forward Topology[J]. Journal of Magnetic Materials and Devices, 2010, 41(5) |
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| Authors: | LI Kang-yi WANG Xing-wei GONG Jun-yong ZHANG Huai-wu |
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| Affiliation: | LI Kang-yi,WANG Xing-wei,GONG Jun-yong,ZHANG Huai-wu State Key Laboratory of Electronic Thin Films , Integrated Devices,University of Electronic Science , Technology of China,Chengdu 610054,China |
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| Abstract: | The inherent vice of forward DC-DC convertor is that it needs an assistant circuit for magnetic reset,and hard conductance of the MOSFET results in a low convertor efficiency.Active-clamp can reclaim the energy in magnetizing inductance to the input.The soft switch of the MOSFET in primary side can reduce switching loss to minimum value.An example was proposed in this paper to discuss the design of transformer and inductor in active-clamp DC-DC converter.In the design example,efficiency of higher than 90% a... |
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| Keywords: | DC-DC converter active-clamp soft switch synchronous rectification |
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