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LM5143-Q1: DITHER FUNCTION IN LM5143-Q1

Part Number: LM5143-Q1

Hi Team, 

we meet this question when testing the LM5143-Q1:

During the debugging process, it was found that if we turn on the DITHER function, there will be a howling sound in the inductor, and its frequency is exactly the same as the frequency set by DITH.

If we turn off the DITH function, the howling disappears. According to the specification, the frequency of DITH must be less than 20KHz. In this case, it must fall within the range audible to the human ear.

Do other customers encounter similar problems? Do you have any suggestions?

BR

Brandon.