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UCC5390ECDWVEVM: Current consumption of the UVLO pin (GND2)

Soeren Juul
Prodigy 10 points
Part Number: UCC5390ECDWVEVM

Hi TI.

I am currently working on a split power supply for a gatedrive, but I need to know how much current that will flow out/in of the GND2 pin of the UCC5390ECDWV. Please also take max temperature into account. 

Thank you!

 

  • 0
    TI__Guru**** 189401 points

    Hi, Soren,

    Welcome to e2e, and thanks for your interest in our products!

    For the UCC5390E GND2 pin, as you noted, it is used as a reference for the UVLO circuitry to accommodate split-supply operation. Since it is used as a sensing reference, very little current will flow in/out of it. We don't specify this, but you can assume it will be on the order of tens of microamps if used as shown in in Figure 4 of the users guide. NOTE: R2 is zero ohms, and R3 is open, thus tying the GND2 pin to ground as shown in Table 1.

    Let us know if you have further questions.