• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 113 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO5451-Q1: 15V UVLO REQUEST

Ryker She
Expert 4360 points
Part Number: ISO5451-Q1
Other Parts Discussed in Thread: ISO5451

Tool/software:

Hi expert,

My customer is looking for the SiC driver and they need 15V UVLO spec, do we have suitable isolated driver devices can support it? Thanks.

Best Regards,

Ryker

  • 0
    TI__Mastermind 23176 points

    Hi Ryker, 

    Can you clarify what SiC FET they are using, and why 15V is an exact requirement? The ISO5X5X devices do have a 15V recommended minimum, but most of our SiC FET gate drivers have a recommended minimum of around 13.5V, which we call 12V UVLO. This gives some noise margin and helps avoid UVLO during turn-on when driving SiC FETs at 15V.

    The highest UVLO option available is UCC21551D:

    Best regards,

    Sean

  • 0 in reply to Sean Cashin
    TI__Expert 4360 points

    Hi Sean,

    Is there any customer have used ISO5451-Q1 as SiC FET driver? My customer wants to make sure that they are not the first one to do that. Thanks. 

    Best Regrads,

    Ryker

  • 0 in reply to Ryker She
    TI__Mastermind 23176 points

    Hi Ryker, 

    Yes, ISO5451 is commonly used to drive SiC FETs. It has a DESAT pin, which is optimized for IGBTs, but you can disable this feature by shorting DESAT to COM.

    There is not much difference between in IGBT gate drivers beyond this. 

    Best regards,

    Sean