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Analysis of switching frequency modulated synchronous buck converters

机译:开关频率调制同步降压转换器分析

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This paper is devoted to the analysis of the effect of switching frequency modulation (SFM) used for EMI reduction on the synchronous buck converters (SBC) parameters, such us output voltage ripples (OVR), peak power component currents, etc. In the paper SBC are studied analytically, using computer simulations and experimentally. The most careful attention is paid on the peak-to-peak OVR because it is the most problematic parameter due to the use of SFM. Several useful guidelines for the choice of SFM parameters and slight modification of the control circuit to get peak-to-peak OVR as small as possible are also proposed. The results presented in the paper can simplify the design of SBC with SFM.
机译:本文致力于分析用于EMI降低对同步降压转换器(SBC)参数的开关频率调制(SFM)的影响,如纸张中的US输出电压纹波(OVR),峰值功率分量电流等通过计算机模拟和实验分析SBC。最仔细的注意力在峰值到峰值OVR上支付,因为它是由于使用SFM而导致的最有问题的参数。还提出了几种用于选择SFM参数的有用指南,并提出了控制电路的略微修改以获得尽可能小的峰值峰值OVR。本文提出的结果可以简化SBC的SYFM设计。

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