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UCC28740: Line fault

Zoey Wu
Expert 6005 points
Part Number: UCC28740


Hi team,

do we have more specific description of line fault in the block diagram?Thanks~

  • 0
    TI__Mastermind 24375 points

    Hi Zoey,

    Thank you for the query on UCC28740.

    Ivsls current (Current into the VS pin during the MOSFET on-time determines the line-input run and stop thresholds of the input voltage). 225uA/80uA into the Rs1 resistor programs this line fault, where IC starts switching after reaching the brown in threshold and goes into brown out condition once this (Ivsls x Rs1 resisot falls below this threshold).

    Regards,

    Harish