TPS628503-Q1: Schematic review

Hi Allen.

Thanks for your question.

The schematic looks fine.

The customer can eventually optimize it in the lab to meet their stability requirements.

I would advise to insert the additional 50Ohm resistor in the FB loop, if needed for the bode plot measurements. 

Thanks,

Stefano

Hi Allen,

Do you have any further questions?

Otherwise we can close this thread.

Thanks,

Stefano

hi Stefano:

 tks for your explanation. for the loop compensation test, does the 50Ω is recommended?

 And should  we connect 50Ω in series with R715 and then in parallel with C713, right?

HI Allen,

50 Ohm should be ok.

You should connect this resistor between the output and the parallel connection of R715 of C713.

In order:

VOUT

50Ohm

R715 // C713

R716

R717

GND

Thanks,

Stefano

Hi Stefano:

 I draw a diagram as you mentioned, am i right?

Hi Allen,

Yes, it looks fine.

Thanks,

Stefano