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开关电源的频率



你好,我们在设计中用了贵公司一个电源芯片:MC33063ADRJR,参考芯片的数据手册,在输出级加了一个220uH的电感,但只要一通电,电感就会发出吱吱的声音,我侧过流过电感的电流非常小,没达到其饱和电流,那我的问题是 DC-DC的工作频率的大小会导致电感发声吗?

ps: MC33063ADRJR的频率为100KHz

附件为原理图。

power supply circuit.pdf