• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 128 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC38503: UccX850X

user6354175
Prodigy 20 points
Part Number: UCC38503

Hi. What PFC frequency limits can I set for the 38503? The limits of the increasing part of the microcircuit are of interest, and not the decreasing one. I did not find this information in the datasheet

  • 0
    TI__Genius 11350 points

    I don't have the exact number for you but this type of controller can run up to several hundred kHz.  Make sure 10kΩ < Rt < 100kΩ and chose Ct accordingly.  Let me know if you need to go beyond that and I will try to get you a more definitive number.