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About tps65090A output issue in vfet port------very strange

temp temp
Prodigy 10 points

 I am designing a new system by TPS65090A ,unfortunate the VFET can't work normally.the input voltage of DCDC1 and DCDC2 is 5V, after setting ENFET1 in FET* _CTRL register ,I find that VFET6 can work ,but the other VFET  can't work .

So,any expert can help me to check that which condition can caused the result ,It seems very strange.

thanks!

  • 0
    TI__Genius 16870 points

    Hi,

    The input voltage range for the DCDC1 and 2 is 6V - 17V.

    The load switches input voltage ranges are stated in the datasheet in section 2.2. They all can handle 5V input. However, I would not recommend load switch 1 to be used with 5V because that is the minimum voltage.

    Can you provide a schematic with the voltages and settings for your design?