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UCC27532: Unencrypted PSpice model not working

sathyanarayanan G
Prodigy 40 points
Part Number: UCC27532

Hi 

I downloaded the UCC27532 Unencrypted PSpice Transient Model  and trying to simulate in Tina not getting expected output. 

Waveform

  • 0
    TI__Genius 13760 points

    Hi,

    Thank you for reaching out to E2E.

    Our product expert is out of the office for the US Thanksgiving holiday this week. We will get back to you with an update next week.

    Best regards,

    Andy Robles

  • 0 in reply to Andy Robles
    TI__Genius 11770 points

    Hi,

    I was able to re-create this, and found what is likely the problem:

    I also defaulted to 5V for the input, but that is too low for this device. Try 10V or 12V for VG1 and see if that fixes it.

    Also, I would recommend tying EN to VDD for the simulation to avoid a floating node for simulation (even though it works floating due to pullup in reality). In addition, it helps to use a capacitor on the outputs so the driver can work as intended.

    Good luck, hopefully it works with these changes but let me know if it doesn't.

    Thanks,

    Alex M.