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Thread: threshold voltage

  1. #1
    Beginner Beginner AnniLe is on a distinguished road
    Join Date
    Aug 2019

    threshold voltage

    Why is gate threshold voltage important to avoid parasitic turn-on???

  2. #2
    Infineon Employee
    Infineon Employee
    YUAN is on a distinguished road
    Join Date
    Aug 2019
    There will always be some gate voltage coupled from external. SiC MOSFET may have more gate voltage coupled, due to the fast switching. If the couple gate voltage is higher than the threshold voltage, parasitic turn-on will happen. This is why Infineon design the SiC MOSFET with the high Vth voltage.

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