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TPS55288: OCP behavior

Antony Lin
Genius 13480 points
Part Number: TPS55288


Hi,

We see there's an OCP bit indicating OCP is hit or not.  Is there any way to indicate the status of OCP through any HW signal?

In parallel, I see a register OCP_DELAY.  My understanding is, it allows the over current if the period lasting shorter than OCP_DELAY.  If this is true, what is the peak current it can allow within the OCP_DELAY?

Thanks,

Antony

  • 0
    TI__Mastermind 40080 points

    Hi Antony,

    Please check my feedback below:

    We see there's an OCP bit indicating OCP is hit or not.  Is there any way to indicate the status of OCP through any HW signal?

    -->You can use the voltage at the CDC to determine whether the output current is too big.

    In parallel, I see a register OCP_DELAY.  My understanding is, it allows the over current if the period lasting shorter than OCP_DELAY.  If this is true, what is the peak current it can allow within the OCP_DELAY?  -->Yes, it allows over current if the period lasting shorter than OCP_DELAY. And the peak switch current will be clamped at around 25A.