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lm2576接负载稳不住压的问题



 用的lm2576-adj版本,电感取值470uh,输出电压负电压可调,可是接负载电压掉的厉害,基本接负载就掉了1V,尝试换电感680uh,电感发热严重,换1MH,没有输出电压,换220uh,掉的更多