TPS2373-4EVM-758: TPS2373

Here's the link: www.ti.com/.../slua535.pdf

I would like to know the equation to select the output voltage and what are the valid range of Vout that the design supports.

Hi Ronald,

Vout can be adjusted by changing the value of R64, however, stability will need to be checked & additional changes to the feedback loop will need to be made if found to be unstable. You can see these equations in section 5 of the above app note.

What output voltage do you have in mind?

Thanks,
Tom A.
PoE PD Apps Engineer

Section 5 of the UCC2897A is a table of device options?
Ok. I understand that R64 would be changed. Do you mean the TPS2373-4EVM document?
Where in the app note are you referring?
Theer are 3 sections 5's that are not applicable to this question. We have a 6V application
that is needed. I am also considering a solution that can handle other voltages even if the modifications you mentioned are needed.
What range of voltage how low and how high is supported for Vout?

Ron

Hi Ron,

I meant to refer to section 5 of www.ti.com/.../slua535.pdf (Understanding and Designing an Active Clamp Current
Mode Controlled Converter Using the UCC2897A).

6V should be configurable from just modifying the feedback circuit of the 5V design according to section 5 & beyond.

At 70W, you can design for 1.8V/38A, if you wanted to, but that would require considerable redesign for the significantly higher output current & much tighter regulation requirements. You can go as high as 48V and not even have an active clamp forward converter, just use the PD as a pass through.

What are those other voltages you would like to design for? I can recommend other TPS2373 Active Clamp Forward reference designs for higher voltage levels.

Thanks,
Tom Amlee
PoE PD Apps Engineer