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ORing controller TPS2419: work alternately

Annie Liu
Genius 10295 points
Part Number: TPS2419

Hi Team,

TPS2419 controls the combination of two 12V power supplies, which are connected to the NMOS of VISHY externally. Rds=0.0005Ω. RSET is set to 150K. When the two power modules are powered on at the same time, the TPS1249 will work alternately, and the power consumption is about hundreds of thousands of watts. Customer wants to know how to adjust to keep both working?

Regards,

Annie

  • 0
    TI__Guru 57737 points

    Hi Annie,

    Can you elaborate on the problem with more detailed explanation along with waveform captures of Vin1, Vin2, GATE1, GATE2 and Vout.

    From a top level, I think customer should use a lower value of Rset to check 30k or 15k and check if the issue is resolved.