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LM25116 24-12V负载电流不正常



大家好,想请教一下关于开关电源的问题。

这个24-12V板子做出来后测试发现,最大电流能达到自己设计的值,但是每次负载调到3A、4A的时候电感就开始叫,如果是1A、2A或者5A、6A、7A甚至到10A都不会叫,唯独3-4A会叫,请问可能是哪里有问题呢QAQ先谢谢大家了!