WEBENCH® Tools/UCC28700-Q1: Question about Vin range limitation

Hi Nobuo San,
We have raised the query with concerned resource person. We will get back to you as soon as possible.

Hello Bhushan,

I am going to see what reference design we might have that will work for the customers application. However, could you find someone on the Webench design team to answer the customer original question?

Regards and Thanks,

Mike

Hello Nobuo,

Bhushan is looking for someone to answer your original question about the Webench design tool. There is a reference designs with a higher input voltage range than 480V.

Reference design 1, PMP30428
85V to 400V AC to 12 V and 3.3V output. The input voltage to the flyback converter using the UCC28700 is 70V DC to 565V
www.ti.com/.../PMP30428

There is an application note for the UCC28700 that goes along with and excel design tool. That you could use help aid in your design.
www.ti.com/.../slua653
www.ti.com/.../sluc408

Please note that this is for and AC to DC converter. However, the AC to DC is handled by a bridge rectifier the flyback design is a step down converter.

Regards,

Mike

Hi Nobuo San,
We are working on changing VinMax to 500V for UCC28700-Q1. The change should be available to ti.com by first week of April.
We will keep you updated on the same. Thanks for your patience.

Hi Bhushan-san,
Thanks a lot for your dedicated support!