LMZ13608: LMZ13608 whistle tone

Norbert Brendle

Part Number: LMZ13608

Hello,

the LMZ13608 emits a high whistle tone. It is the coil onthe module. (Vin 12 V, Vout 5V, Iout 4 Amps. What can we do about it?

best regards

Norbert Brendle

over 6 years ago

0 Jimmy Hua over 6 years ago

TI__Guru 50120 points

Hi Norbert,

Since the LMZ13608 is a 8-A power module commonly used in 12-V point of load conversions, it is strange that there will be audible noise with your application.

May I ask is this "reproduce-able" and do you have other boards/EVMs that exhibit this problem?

Regards,

Jimmy

0 Jimmy Hua over 6 years ago in reply to Jimmy Hua

TI__Guru 50120 points

Hi Norbert,

Do you have any update on this?

On my end I took a LMZ13610EVM, same family device as LMZ13608, under input/output condition but with two different load(Vin = 12V, Vout = 5V, Iout=4A and 8A) and was not able to hear any audible sound from the module.

Regards,
Jimmy

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LMZ13608: LMZ13608 whistle tone