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UCC28070: GDA, GDB, GDT, Dual Low-Side Driver

Eddie Loy
Intellectual 850 points
Part Number: UCC28070
Other Parts Discussed in Thread: UCC27324

UCC28070 PFC

Question) Is there anything wrong in using a dual low-side driver to drive a 1:1:1 gate drive transformer connected to the gates of the switches as shown in the sketch below?

 

ANY INFORMATION WOULD BE APPRECIATED.

please see below attached sketch.

THANK YOU

  • 0
    TI__Mastermind 34465 points

    Hello Eddie Loy,

    Yes it is possible to design a gate drive transformer circuit such as shown in your sketch.

    SLUA618A is a detailed application document on this subject and you will find it here:

    http://www.ti.com/lit/ml/slua618a/slua618a.pdf

    Section 7 details the issues and challenges on transformer coupled gate drives

    However this question is more related to the UCC27324 driver ic than to the UCC28070 pfc ic.

    So I cannot provide the insight that an applications engineer from the drivers team than provide for you.

    I suggest that you close this post and open a new post referencing the UCC27324 if you have further questions.

    Regards

    John