• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 460 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.

TPS62110: TPS62110 Feedback resistor

Jim Tseng
Intellectual 2320 points
Part Number: TPS62110

Hi Expert,

If I want to use variable resistance to change output voltage ,can the R2 and Cff always be fixed when I adjust the output range from 5V~12V ?

I think I will use 100k variable resistance to adjust voltage. (just like shown below picture)

I will screw it. Therefore ,I think it will create a lot of voltage . I think maximum power is 12w.

If I narrow it down to three levels ,R1 fixed and then R2 use 100K ,200K ,300K.

How about this? Do you recommend R1 fixed or R2 fixed?

Thanks for reply.

Jim

  • 0
    TI__Mastermind 26740 points

    Hi Jim,

    If you are looking to adjust output voltage, I recommend check this app note. You can change the bottom feedback resistor R2 or add variable resistor in parallel to an already installed R2. If you have optimized CFF with a fixed R1, keeping R1 fixed will keep the zero location intact so recommend changing effective R2 value.

    Thanks,

    Amod