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UCC27519A-Q1: UCC27519-Q1 DBV max peak current

Mohamed Hellal
Intellectual 2285 points
Part Number: UCC27519A-Q1
Other Parts Discussed in Thread: LMG1020, UCC27611

Hi. 

Quick question on UCC27519A-Q1 - what would be the maximum peak current when the device is supplied with 5V vdd ?

Thanks, 

  • 0
    TI__Genius 13445 points
    Hi Mohamed,

    Thanks for reaching out to us, my name is Mamadou Diallo supporting low-side drivers in the High Power Drivers' team.

    The maximum peak current is dependent on many parameters that I reference on the copied link below.
    e2e.ti.com/.../782189

    Additionally, you can estimate the peak current using VDD/Ron where Ron = internal + external impedance on MOSFET turn-on path.

    However I would caution that this device has a UVLO turn-on threshold (max) right at 4.57V at room temperature, I would therefore advise to account for variations and transients occurring during system operation and give yourself/customer a bit more wiggle room to operate away from the UVLO threshold.

    If the customer is driving a GaN FET, I can help suggest a dedicated GaN driver like UCC27611 or LMG1020 capable of operating at 5V with a stronger driver current capability at 5V.

    Please let us know if you have further questions or press the green button if this addressed your inquiry.

    Regards,

    -Mamadou