• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 59 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

UCC14240EVM-052: How can I disable the -5V negative output rail on the EVM?

Shashank Sayanwar
Prodigy 20 points
Part Number: UCC14240EVM-052

Hi. 

I just need a single 20V output for my application. Is there a way I can disable the -5V output out of the converter?

Thanks.

  • 0
    TI__Genius 12920 points

    Hello,

    Yes, UCC14240 can have a single output. Please refer to calculator on ti.com, and it provides how to modify the board. 

  • 0 in reply to Sean Xu
    TI__Genius 17895 points

    You can also check the app note here and pay attention to the configuration below. The key point is that on the EVM, you will need to remove the FBVEE resistors and short the FBVDD to FBVEE (best to make the short directly at the IC pins by dropping a solder connection across pins 33 to 34). In the schematic below, the RMIL (R1) is shown connected to VDD but you can simply remove RLIM and leave the pin floating for single output configuration.

    Steve