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TPS92512: PDIM (PWM) frequency

Patrick Chen
Mastermind 8875 points
Part Number: TPS92512

Hello

      Customer used TI/TPS92512 for LED driver control, Since they need to drive 0.7A current for LED control. Could customer used  250 Hz for PWM frequency design ? Thank you. 

BR

Patrick

            

  • 0
    TI__Mastermind 28655 points

    Hello Patrick,

    Yes.  If the full current set-point is 1.5A the duty cycle will be 46.7% (using the above graph).  If the current regulation set-point is reduced to 0.7A then duty cycle will be 100% and it should linear dim as the above graph with 0.7A being the maximum at 100% duty cycle PWM.

    Best Regards,