TLK105 / power supply repple requirement

Asaka-san,

We will look into this and respond.

Patrick

Hello Patrick san,

Thank you for the support.
I'm looking forward to your reply.

Best Regards,
Ryuji Asaka

Hello Patrick san,

Is there any progress?

Thanks.
Ryuji Asaka

Hello Patrick san,

I have additional question.

(1)
This 25mVpp is applied to VDDIO ?
Currently the ripple voltage of VDDIO is 30mV.

(2)
Could you please let me know the ripple voltage of PFBOUT?
The customer use PFBOUT for PFBIN. Thus, I would like to know the PFBOUT ripple.

(3)
Do you have any experience of problem due to this 25mVpp large ripple voltage?
If you can share with us, please let me know... The cusotmer would like to know this 25mVpp reason.

Best Regards,
Ryuji Asaka

Asaka-san,

Could you provide some information on the de-coupling capacitors being used for the VDDIO and PFB pins?  What value of capacitors are used and where are they placed on the board?

I do not have examples of problems due to 25mVpp power supply ripple. 

Patrick

Patrick san,

I send the schematics to you directly.
The capacitors are same with design&layout guide.

Best Regards,
Ryuji Asaka