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BQ40Z50-R1 protection delay

Other Parts Discussed in Thread: BQSTUDIO

Currently, we are conducting a test of Overcurrent in Discharge Protection.
For the setting of -18A-1s, FET was turned off in 2s after passing a -19A of discharge current.
So I made changes to the delay time to 0s, FET was turned off in the 1s.
What are the causes for delay of 1 second for setting?

  • Hello,

    The delay for the OCD will be the time the continuous discharge current is less than the OCD threshold before your FET turns off.

    How are you measuring the timing? Can you create a log in bqStudio that shows this event of discharging below the threshold? And can you also send me a copy of your gg file?

    Best,
    Justin