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Simulating dead time in a motor drive application

Frazer F
Prodigy 320 points
Other Parts Discussed in Thread: UCC21540

I would like to simulate gate drivers switching two IGBTs with a variable dead time. Using TINA is there a way to add a dead time in between switching the top and bottom IGBT? 

  • 0
    TI__Guru**** 189401 points

    Hi, Frazer,

    There are numerous ways to do this... Two that come to mind:

    1. Put an RC in front of the logic input to the driver. This will effectively delay the signal coming in.

    2. Put a gate resistor between the driver and the IGBT. This will delay the switching of the IGBT. You can put a diode in series to make the delay asymmetric.

    Do you have a particular gate driver you're looking at? We have some with built-in dead-time generators (UCC21540 for example).