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UCC21540: DT pin floating aaplication

Part Number: UCC21540

Hi Team,

My customer wonder to use this part and they just asking that if they let the DT pin to floating on his board.

Did it will happen any issue unstable or concern ? please share your idea and comment to let me know.Thanks!


  • Hi Eddie,

    We don't recommend leaving this pin floating because external noise can couple to this pin with more ease and affect the deadtime amount. I recommend either tying the pin to VCC or tying it to ground with a resistor in parallel with a capacitor.