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LM5163H-Q1: Gate drive voltage

David Van Vels
Prodigy 100 points
Part Number: LM5163H-Q1

Tool/software:

What is the gate drive voltage assuming 28V input power?

i.e. what is BST voltage and VCC voltage?

Figure 7.2 shows a bias regulator with VDD output but the low side gate driver is powered by VCC. Where does VCC come from?

  • +1
    TI__Expert 5490 points

    Hi David,

    Both VCC and VDD are same and it is generated from bias regulator which is connected to VIN input voltage. There is naming convention mistake in datasheet. I will ask internal team to correct this. 

    For 28V input voltage, the BST-SW node voltage would ~VCC i.e 5V.

    Thanks,

    Nitya