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UCC21530-Q1: How to calculate I(VDDA), I(VSSA), I(VDDB), and I(VSSB)

Yutaka Naito
Prodigy 10 points
Part Number: UCC21530-Q1

How do I calculate I(VDDA), I(VSSA), I(VDDB), and I(VSSB) when VDDA=VDDB=18V, VSSA=VSSB=-5V, Qg=40nC, and f=150kHz?

  • +1
    TI__Expert 5020 points

    Hello Yutaka-san, 

    For each channel of the gate driver, average switching current can be calculated by Isw = Qg * fsw. Add the calculated switching current to the quiescent current in the datasheet (attached below) gives you the total current consumed. 

    Hope this helps, 

    Vivian