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LM27402: BUCK转换电路中,低频噪声干扰。

Part Number: LM27402


你们好,我有一个项目使用了该芯片,芯片输入12V,输出1.5V,25A给FPGA供电,开关频率为500KHZ,发现该芯片的输入和输出有一个低频的噪声,影响到我系统的成像,我想咨询一下为什么会产生这个低频的干扰?