TLV62568: TLV62568 the test found that its output inductance whistle

Hi Jerry,

What do you mean by "output inductance whistle"? Do you mean it generates audible noise?

Can you capture the SW pin (pin 4) waveform of TLV62568? This is determine if the switching frequency is within the audio frequency.

Best regards,

Excel 

Hi Jerry,

Just a soft reminder.

Kindly response to my queries so I can address your issue.

"What do you mean by "output inductance whistle"? Do you mean it generates audible noise?

Can you capture the SW pin (pin 4) waveform of TLV62568? This is determine if the switching frequency is within the audio frequency."

Best regards,

Excel

Hi:

        This is   SW pin (pin 4) waveform :

Hi Jerry,

If my understanding is correct in the waveforms you provided, the TLV62568 and TPS560430 switching frequencies were 1.5MHz and 2.09MHz, respectively. However, the switching frequencies were above the audio frequency spectrum (20Hz - 20kHz) therefore will not generate audible sound.

Can you please clarify if your issue is related to audible noise generated by the circuit?

Best regards,

Excel