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LM5175在6V输入时,负载拉到3A,输入电压会掉的问题

Other Parts Discussed in Thread: LM5175, LM5175EVM

LM5175,设计参数如下:VIN 6-36V,Vout 12V,Iout(max)=6A;

当输入降到6V时,不加负载,输出稳定,加载到3A左右,输出开始震荡或掉电至5V左右;

请专家解答下,是否有办法调?