如题,LM5030在Vin的入线侧加电容则,影响PWM占空比变得很低,不知道为何,另外这个还和开关频率以及离电源的距离有关系,频率低时同样的距离加这个电容没影响,频率升高后就有影响同时还发出很明显的噪音。在同样的频率下,当把这个电容放到离电源比较远的位置的话就恢复正常也没有噪音。对此很不理解,请专家帮忙分析分析。
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.