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TCAN2451-Q1: HSS short to battery

Daniel Wang (auto)
Expert 3840 points
Part Number: TCAN2451-Q1


Tool/software:

Hello team,

If HSS1 output short to battery when on-state, will the chip report fault? Open load fault?

Thanks

Regards,

Daniel Wang

  • 0
    TI__Guru 52752 points

    Hi Daniel,

    If the current through the switch falls below the I_OL(HSS) threshold (which is max 3mA and a minimum of 400uA) then the open load interrupt will be triggered - however the switch will remain in its on state - the only thing that happens is the flag will be raised. An important note is that when the fault is cleared the flag will remain unless cleared by the controller - i.e. the interrupt does not self clear. 

    So if the battery is shorted to VHSS and HSSx - most likely the current through the switch should be near 0 so it would generally raise the open load interrupt. 

    Best,

    Parker Dodson