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TPS92515HV-Q1: TPS92515 compare question

Kuo John
Expert 1075 points
Part Number: TPS92515HV-Q1
Other Parts Discussed in Thread: TPS92515

Hi Team,

My customer use MPQ4420 design constant current application LED driver now. device need meet automotive grade.
May I know TPS92515 has benefit compare MPQ4420? Looks MPQ4420 is ease implement constant current and synchronous architecture improve efficiency. over-all optimize better than TPS92515.

  • 0
    TI__Mastermind 25500 points

    Hello Kuo,

    The main differences are the feature set and the control architecture. The 515 includes analog dimming, PWM dimming, and is capable of shunt FET dimming. It is also hysteretic so it will have much higher bandwidth.

    I also do not think the 515 efficiency will be any lower in the end. It is not synchronous but its current sense voltage is much lower than the 0.8V minimum on the MPQ device. You will be burning a lot more power in the current sense resistor so depending on the duty cycle you are operating at the 515 will likely be about the same or even better at higher duty cycles.

    Regards,

    Clint