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LM5008A: OCP behavior

Allan Fan
Expert 7090 points
Part Number: LM5008A

Tool/software:

Hi expert,

Customer used LM5008A and measured OCP waveform with e-load. CH1 is 3.3Vout, and CH2 is inductor current.

The first trip point the inductor current is about 0.58A which seems reasonable. Could you please help clarify what's the next Vo drop stage as circled #2 and what condition triggered so Vo then drop to zero? 

Regards,

Allan

  • 0
    TI__Guru 58761 points

    Hello Allan 

    I think the behavior depends on the performance of e-load. In general, the minimum recommended operating voltage of the e-load is ~1-2V. Please check the performance again with real resistor load. 

    -EL