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DRV8881: about Over Current Protection

Takao Yamamoto
Genius 4135 points

Dear all,

Question 1,

Over current is detected by only OCP?

xISEN pin can only set MAX current value and not detect over current?

Question 2,

If over current is detected by only OCP,

what point does OCP detect over current?

Best regards,

  • 0
    TI__Guru** 114905 points

    Hi Yamamoto-san

    Takao Yamamoto said:

    Question 1,

    Over current is detected by only OCP?

    xISEN pin can only set MAX current value and not detect over current?

    Yes, over current is detected by internal overcurrent protection.

    xISEN is used to set max current value.

    Takao Yamamoto said:

    Question 2,

    If over current is detected by only OCP,

    what point does OCP detect over current?

    OCP is detected when current is >Iocp min for longer than tocp (typically 2us)