LV2862: Minuscule Audible noise

Also is there a possibility to get unencrypted PSPICE model for this part? The TI PSPICE takes ages to simulate. We can sign a NDA if you prefer.

Cheers,

Kaushalya

Hi Kaushalya

Can you check the Vin waveform and see if it where the 10kHz noise come from ? 

We can share unencrypted pspice model with NDA number.

Thank you

Thanks Gui He. 

I will check Vin and keep you posted.

Can you please send me a NDA so that we can sign it and return to you?

Cheers,

Kaushalya

Hi Kaushalya

For the NDA , I think you will need to find a FAE in your region to help with this.

Thanks

Thanks again

I cant see any 10kHz signal on Vin, but I think this is most probably cased by discontinuous mode operation as my load is very light. I will try adding a static load to the output and see if I can suppress this 10kHz.

Would you be able to get me in touch with a FAE for our region?

Cheers,

Kaushalya

At what load levels the switcher switches to Eco-mode? The data sheet doesnt say how to derive this.

Cheers,

Kaushalya

Hi Kaushalya

Sorry that I might not be able to get you in touch with the responsible FAE. Apologize for that.

Yes we can see if the 10kHz is still there when there is more load and avoid the eco-mode operation.

The 7.7.3 section in the datasheet has statement about the ECO-MODE. And as I see from the Figure8-10, it  enters eco-mode when the iL_pk gets as low as around 100mA.

Thanks and best regards.

Hi, We have already signed an NDA with TI, ref ICMNDADMA_7651 previously for a different PSPICE model. Can we use that?

Cheers,

Kaushalya