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AMC22C11: OCP issue

Jimmy WANG
Genius 3165 points
Part Number: AMC22C11

Hi team,

Could you help with this? Customer setting OCP around 12A.

But when the current up to 4.4A will trigger the OCP point. could you give some suggestions? thanks 

  • 0
    TI__Expert 3560 points

    Hi Jimmy,

    I doesn't look like the out pin is fully transitioning.  The expected behavior would be for the out pin go low and stay there while the input voltage is above the reference voltage.

    A few questions:

    1.  What is happening with the OC_LATCH signal?

    2.  Are the VDD1 and VDD2 voltages of the device stable during the above transition?

    3.  Could you provide a zoomed in scope capture of the out pin behavior seen?