TPS54360: Vcomp Noise level

Nicky Lim

Genius 3195 points

Part Number: TPS54360

Hello,

Is there any guide or recommendation about Vcomp noise level? like as its ripple voltage must be under 10% of Vcomp?

Regards,

Nicky

over 8 years ago

0 Samuel Jaffe over 8 years ago

TI__Mastermind 25590 points

Nicky,

I do not know of a guide for this. Good layout and reasonable component selection should mean this is not an issue.

-Sam

0 Nicky Lim over 8 years ago in reply to Samuel Jaffe

Genius 3195 points

Hi Sam,

That means there is no guide or recommended value about Vcomp noise?
Just recommended to use reasonable component selection and layout. Am I right?

Regards,
Nicky

0 Samuel Jaffe over 8 years ago in reply to Nicky Lim

TI__Mastermind 25590 points

Nicky,

That is correct.

The COMP pin is connected directly to the output of an op amp so this is a low-impedance path. FB is a high-impedance, noise-sensitive pin which is right next to COMP. This is why we are more worried about FB vs COMP. If there's an issue with noise on COMP, there's almost definitely a bigger issue with noise on FB.

-Sam

0 Tony Philip over 8 years ago in reply to Samuel Jaffe

Prodigy 60 points

Hi Samuel,
I Have a design that could take an experts eye. Can you pass me your mail so that I can send you the Gerbers.
Thanks ,
Tony

0 Samuel Jaffe over 8 years ago in reply to Tony Philip

TI__Mastermind 25590 points

Tony,

Send it to my email. I'll take a look. Thanks,

-Sam

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TPS54360: Vcomp Noise level