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LMR14050: timing to return normal operation from OV condition

Motoyasu Hattori
Expert 8685 points
Part Number: LMR14050
Other Parts Discussed in Thread: LMR14030

Hi,

Could you please let us know the timing to return normal operation from OV condition?

We can see the following sentence on the datasheet P.14.

"When the FB voltage drops below the falling OVP threshold which is nominally 107% of VREF, the high-side MOSFET resumes normal operation."

Does LMR14030 return normal operation on the Switching start timing or independent of switching frequency?   Please advise us.

Thanks and best regards,
M.HATTORI.

  • 0
    TI__Mastermind 27030 points

    HI 

    when the device is in OVP, the internal COMP will be lower, so if OVP condition is in no load, it will slowly come back to low Iq model with pulse skip model . If output has certain load, the output will come back to normal operation switching frequency