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.

TPS92515-Q1: One out all out

Part Number: TPS92515-Q1

Hi Team,

Is it possible to implement one-out-all-out functionality with the TPS92515-Q1?

Thank you,

Jared 

  • Hello Jared,

    Could you explain "one-out-all-out" functionality a bit more? I'm not exactly sure what that is, but I'd be happy to try and help if you can let me know.

    Thanks,

    Clint

  • Hi Clint,

    So for one-out-all-out, let's say I have 3 LEDs in series.. if one of the LEDs is shorted, then the device will stop current from flowing to the string of LEDs. Basically, if anything happens to one LED, all the other LEDs are shut off.

    -Jared
  • Hello Jared,

    Ok, that's kind of what I figured. All of our LED drivers are constant current sources and will generally just keep running if one LED in a string shorts. The only real way to implement that would be to monitor the output voltage and if it suddenly drops below a certain threshold due to an LED short you pull down the PWM pin to turn the LED string off. I've asked others on the team that may have seen this type of requirement and they came to the same conclusion. I hope that helps.

    Regards,

    Clint