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DRV8840: DRV8840 EMI超标,有什么改善方案。

Part Number: DRV8840

DRV8840输出接24V/50W电机,20K PWM  占空比80%  运行电流1A左右,EMI测试超标。OUT1和OUT2输出上有什么辐射抑制方案? 软件驱动上使用有改善方法?