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UCC27511A: use the UCC27511A as a UCC27531 replacement

Mat1980
Intellectual 1210 points
Part Number: UCC27511A
Other Parts Discussed in Thread: UCC27531,

Dears,

I am looking for an alternate part to replace the UCC27531.

Do you think that the UCC27511A can work? What makes the UCC27531 rated for SIC, is there any other difference exept of the Input votlage.

Can you recommend any other part to replace this?

Thanks!

  • 0
    TI__Genius 13445 points

    Hi Mat1980,

    Thanks for reaching out to us, my name is Mamadou Diallo, and I will help address your concerns.

    Please find attached a quick comparison table between the 2 devices.

    UCC27511A UCC27531
    Order now Order now
    Online datasheet Online datasheet
    Datasheet Datasheet
    Tools & Software Tools & Software
    SubFamily Low-side drivers Low-side drivers
    Power Switch MOSFET MOSFET
    IGBT IGBT
    GaNFET SiCFET
    Number of Channels (# ) 1 1
    Peak Output Current (A ) 8 5
    Input VCC (Min ) (V ) 4.5 10
    Input VCC (Max ) (V ) 18 32
    Rise Time (ns ) 9 15
    Fall Time (ns ) 7 7
    Input Threshold CMOS CMOS
    TTL TTL
    Prop Delay (ns ) 13 17
    Features Split Output Split Output
    Rating Catalog Catalog
    Operating Temperature Range (C ) -40 to 140 -40 to 125
    -40 to 140
    Package Group SOT-23 | 6 SOIC | 8
    SOT-23 | 6

    In addition to the voltage range difference (18V recommended max for UCC27511A vs 32V for UCC27531), the UVLO is another main difference (8.9V for UCC27531 vs 4.2V typ. for UCC27511a). 

    Do you have any specific concerns that I may address with UCC27531? Are there reasons why you're looking to replace this driver?

    I understand you're driving a SiC FETs but can you tell me more about your design requirements? 

    Thanks.

    Regards,

    -Mamadou

  • 0 in reply to Mamadou Diallo
    TI__Intellectual 1210 points
    Thanks for the support Mamadou.

    This cleared my question for now.
    I will get back to you if I need further infos.