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LED driver for stop/tail/turn lamp application

Sean Bigley
Genius 17175 points

Hello,


I have a question regarding using a voltage regulator as an LED driver in a stop/tail/turn lamp application. Some information on my design:

I'm concerned that using a voltage regulator, as opposed to an LED driver geared towards current regulation, will lead to instability within my system due to the lack of external compensation pins.


My question is: will I need to add poles to my feedback loop to ensure a stable system? Or will I be able to ensure system stability using a voltage regulator as an LED driver?

Thanks,

Sean

  • 0
    TI__Mastermind 25500 points
    I am not familiar with that device, but I am familiar with automotive LED driver devices. If you could provide the full input voltage range, the full LED stack voltage, the full LED current range you need, and whether or not you need analog or PWM dimming I could recommend something for you.