反激同步整流变换器的损耗模型分析 关键词 反激变换器；同步整流技术；损耗模型 [gap=237]Key words: Flyback Converter; Synchronous Rectification; Model of Power Dissipation
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... words: comparators; adjustable threshold voltage; synchronous rectification; reverse currents. 关键词：比较器;阈值可变;同步整流器;输出反向电流
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Firstly, the basic principle buck DC/DC switching converter is introduced, and the various sources of power loss and the synchronous rectification technology are further analyzed.
本文首先介绍了降压型DC/DC转换器的工作原理,深入分析了转换器的各种功率损耗源和同步整流技术。
参考来源 - 高效同步整流buck DC/DC转换器的研究与设计This work presents some research on the corresponding problem of high efficiency low-voltage/high-current output DC/DC converter. The principles and characteristics of Synchronous Rectification(SR) are given, and advantages of Self-Driven SR in low power applications is detailed.
本文针对低压/大电流输出的小功率DC/DC变换器，围绕着变换器的效率问题，分析了同步整流的原理和特点，重点阐述了自驱动同步整流在低功率场合的优势，在分析比较了多种与自驱动同步整流相结合使用的电路拓扑后，指出常规的自驱动同步整流方案限制了与之结合使用的电路拓扑的范围这一局限性，从而给出了一种新颖的单绕组自驱动同步整流方案。
参考来源 - 基于同步整流技术的低压/大电流输出直直流变换器的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The power dissipation model of synchronous rectification flyback converters was established.
建立了同步整流反激变换器的损耗模型。
Synchronous rectification produces a ripple frequency twice that of the excitation frequency and thus is easier to remove with a lowpass filter.
同步稳压产生两倍激励频率纹波频率，因此更容易被低通滤波器去除。
Finally, we can learn by experiments that the limited efficiency improvements can be achieved by using synchronous rectification in a low voltage, high current power supply.
最后通过实验得出结论，同步整流是低压、大电流电源中提高效率的有效方法。
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