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LMR16010电感啸叫问题

Other Parts Discussed in Thread: LMR16010

Dear  TI:

目前采用LMR16010进行电源DCDC设计,输入24V-47V,输出18V/0.5mA,开关频率设定500KHz,电感采用100uH,运行过程中电感一直会发出 “滋滋” 啸叫声,请问这种现象是什么造成的,会影响使用吗?

另外,还有一路LMR16010降压到24V,电感100uH,负载电流20mA左右时会有微弱的声音,负载电流100mA时,声音减小很多,请帮忙分析下原因,谢谢~