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High frequency common mode EMI noise suppression for switching converters by impedance control

机译:通过阻抗控制抑制开关转换器的高频共模EMI噪声

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The EMI noise source impedance of an SMPS is essential in EMC design, and because DM noise is easy to identify and control but CM noise is still hard to characterize, more concerns are with CM noise. This paper deals with the modeling of CM noise source and introduces a simple way to suppress high frequency common mode EMI noise for switching mode power converters by means of common mode noise source impedance control. Experiments and EMI test results are presented to validate the CM noise suppression method.
机译:SMPS的EMI噪声源阻抗在EMC设计中至关重要,并且由于DM噪声易于识别和控制,但CM噪声仍然难以表征,因此,更多的关注是CM噪声。本文讨论了CM噪声源的建模,并介绍了一种通过共模噪声源阻抗控制来抑制开关模式功率转换器的高频共模EMI噪声的简单方法。给出了实验和EMI测试结果以验证CM噪声抑制方法。

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