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求助:LM3488升压7.4V到12V2A,输出锯齿波有滋滋声!

Other Parts Discussed in Thread: LM3488

求助:LM3488升压7.4V到12V2A,输出锯齿波VPP600-800mV,有滋滋的啸声!原理图是按照webench设计的!实际做样时,电感取的4.7uh,取消了97.6R的电阻(有这个电阻输入电流会增大,发热),