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UCC21739-Q1: UCC21739 Interlock timing

paulternes
Prodigy 50 points
Part Number: UCC21739-Q1

Tool/software:

Hi

The UCC21739-Q1 datasheet has a section, 8.2.2.2 PWM Interlock of IN+ and IN-, that describes how to configure a high side / low side pair for phase leg shoot-through protection.  However, I do not see any timing information related to the section.  Are those details available?  Thanks

Paul

  • +1
    TI__Expert 8105 points

    Hi Paul,

    No there is no delay between IN+ ad IN-, level change. the output status change will be equivalent to the prop delay for both (IN+/IN- change), which has part to part variation of ~30nsec max.  So if the system maintains ~30nsec delay to accommodate part to part skew, then that will be good.

    Hope it answers your question.

    Thanks

    Sasi