• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 41 subscribers
  • Views 211 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.

PMP40182: How does the current and voltage set works

Ba Dong
Intellectual 795 points
Part Number: PMP40182
Other Parts Discussed in Thread: TL594, TIDA-01040

Hi Team, 

www.ti.com/.../tidrr26.pdf

Could you please describe how does the Vest and Iset works to provide FB to TL594,what's the function of the 2 diodes and when does the 2 diodes open or close?

Thanks.

And in other reference design, there is only 1 diode at current side, please refer to TIDA-01040.

www.ti.com/.../tidrwj9.pdf

B.R.

Eric

  • 0
    TI__Intellectual 945 points

    Hi, Mr Dong,

    2 diodes is used for oring function. That means there will be one control loop working either voltage loop or current loop at a certain condition.

    constant current amplifier diode in series conduction condition is constant current loop working(at this condition, owing to battery not up to setting voltage, voltage loop amplifier will output high level blocking its series diode).

    constant voltage amplifier diode in series conduction condition is constant voltage loop working(at this condition, owing to charging current less, current loop amplifier will output high level blocking its series diode).