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LM51551-Q1: question on the OCP function

Wonder Fang
Prodigy 255 points
Part Number: LM51551-Q1
Other Parts Discussed in Thread: LM5155

Tool/software:

Hi team,

Does the OCP monitor CS pin continuously in whole cycle, or just only during the on-time of the power MOSFET?

Thanks,

Wonder

  • 0
    TI__Genius 16015 points

    Hi Wonder,

    Thanks for reaching out.

    When the OCP is triggered, LM5155 will turn off the switch for the rest of the cycle. When the switch is already off, there is nothing the OCP can do.

    So it will ony monitor the current during the on-time.

    Best regards

    Moritz