UCC28911: Output voltage

Shuji Ishiwata

Genius 5905 points

Part Number: UCC28911

Hi All,

I have a question about the output voltage of UCC28911.

I want to input 280V DC and output 54V DC, but according to WEBENCH, the maximum VOUT is 25V.

Is it possible to output 54V with UCC28911?

Best Regards,
Ishiwata

over 1 year ago

0 JCHK over 1 year ago

TI__Mastermind 43630 points

Hi Ishiwata-san,

This is a limitation of the webench model, not the device itself. I would get this corrected.

I hope this answers your question.

0 Shuji Ishiwata over 1 year ago in reply to JCHK

Genius 5905 points

Hi JCHK-san,

I think it depends on the peripheral components, but is it possible to use DC54 output with DC280V input without any problems as a product specification?

Customer plans to use UCC28911 for battery charger.

Best Regards,
Ishiwata

0 JCHK over 1 year ago in reply to Shuji Ishiwata

TI__Mastermind 43630 points

HI Ishiwata-san,

You are correct in that this is a function of the peripheral components. The limitation you will run into is the total amount of power that can be delivered.

I submitted the request to fix Webench yesterday so it will allow this once it gets refreshed.

I hope this answers your question.

Power management

Power management forum

UCC28911: Output voltage