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FAQs 如何改善参考设计MAXREFDES116#的EMI性能?
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  • 使用AD936X Evaluation Software导出配置时,软件提示滤波器系数过多。

如何改善参考设计MAXREFDES116#的EMI性能?

可以尝试以下方法改进MAXREFDES116#的EMI性能:

  1. 使用MAX17599的扩频功能,扩频可以使MAX17599的工作频率在其设定频率正负10%范围内抖动,从而降低EMI。为了使用扩频功能,您需要将电路板上的C3处的走线割断并焊上一个15nF的电容,在R4处焊一个300kohm的电阻;
  2. 在输出整流管和续流管的DS之间加上RC吸收电路,吸收电路可以采用47ohm和1.5nF电容串联,电路板上对应的电阻电容分别是R20, R25, C14和C16;
  3. 可以在电源的输入和输出加一些0.1uF, 0.047uF和0.01uF的电容。
Tags: MAXREFDES116# EMI KA-01394 MAXREFDES116A#
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