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UCC27531: What is the consideration of supporting 35V max?

Brian Wang0
Expert 5310 points
Part Number: UCC27531

Hi team,

I am summarizing TI gate driver portfolios matching my customer's application.

I noticed UCC2753x is a special product which supports 35V max Vdd.

According to my knowledge, 20V driving voltage should be able to support most power switches including MOS, IGBT or even SiC and GaN. Thus, I am wondering why we developed a device supporting 35V max Vdd? What is right scenarios for me to select this part for my account?

Thanks,

Brian 

  • 0
    TI__Genius 13445 points
    Hi Brian,

    Thanks for your help promoting our drivers, my name is Mamadou Diallo, I am the AE supporting low-side drivers.

    Though most power switches require 15V (MOSFETs), IGBTs often require slightly higher drive voltage 18-20V. In some cases, it is necessary to provide a positive gate voltage to turn-on the power switch and a negative gate voltage for turnoff, in which case the VDD bias supply equals the voltage differential as shown on section 10.2.2 of the datasheet "Driving IGBT with 13-V negative Turn-off bias"

    You may also find the attached app notes written my colleagues helpful:
    www.ti.com/.../slyt503.pdf
    www.ti.com/.../slua770a.pdf

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

    Regards,

    -Mamadou