• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 64 subscribers
  • Views 390 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.

Variable constant current surce

uMin
Intellectual 860 points
Other Parts Discussed in Thread: TL431

Hi,

My customer has a requirement to supply an adjustable constant current source to a Life Science Board. The current source should be adjustable by a MCU, from 0 - 10A.  The following diagram show the requirement.

Input is a 20V source, and output is a constant current 0-10A, and the output voltage should be clammed at 14V.

I am not able to find any simple power management solution to fit this case.

Any suggestions to the solution ?

Thanks and regards,

CM.

  • 0
    TI__Mastermind 19550 points
    Hi uMin,

    The only solution that I can think of that can fit those requirements is to use a MCU -> DAC combination. The only way to clamp it to 14V is to use a TL431 like device as a Zener diode. Why do you have a 14V clamp?
    In this case, you need a current sink or source?

    -Marcoo