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LM51561: Updated SPICE model

Joshua Gier
Prodigy 10 points
Part Number: LM51561

Hello,

I was wondering if there was an updated model for this part.  Using it in LTspice, it seems that the soft-start pin does not have the reported current source, the PGD pin doesn't go high, and the output switcher never starts up.  I'm trying to evaluate this part for a multi-phase boost application and it would be very helpful to have a working simulation.

Thanks,

Josh

  • 0
    TI__Expert 7450 points

    Hi Josh,

    Thank you for your interest in LM51561 and sorry for the delay.

    There are many reasons for the SS to be pulled down/latched. We don't support LTspice directly but if you can show the schematic we can give it a check.

    Thanks,

    Yinsong