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Power Mux TPS2111

Vinod Basi
Prodigy 10 points
Other Parts Discussed in Thread: TPS2111

Hi,

I have been using the auto switch power mux (TPS2111) for my circuit, for which there is a voltage drop of 0.5V and it varies indefinitely for a range of voltage.

Is it inevitable or Is there any other solution to prevent the drop.

CL=0.1uF, RL=5E, Vsns>0.8V

Please Help

Thanks in advance...

 

 

 

  • 0
    TI__Genius 9415 points

    The pass fet  has a maximum RDSon of 150milliohms at 125C so at 1A, the voltage drop should not be more than 150mV. Maybe it has just entered current limit so the output voltage is reduced. Check the current limit resistance sized to allow sufficient current for the output load. Check also that the power supply is not current limited. Measure the vin and vout at the TPS2111 pins so that no other voltage drop in connectors, cables, etccause the problem.

  • 0 in reply to Bob Kando
    Prodigy 10 points

    Thanks a ton Bob...

    I think it solves...

    Thank you again....