LT4010 tgate switching issue

In my circuit, after power on, /CHRG LED was blinking (0.1sec on in every 1 sec) during the first 10 second , /CHRG LED was ON during the next 2 second

and finally /FAULT was detected.

I attached vcc,tgate waveform I monitored.

just before /FAULT was detected, tgate fell to GND.

what is the cause of this problem?

tgate vcc signal

  • 0
    •  Analog Employees 
    on Oct 25, 2018 2:26 PM over 2 years ago

    Hello,

    There is not enough information here for me to tell why the /FAULT was triggered. The datasheet describes a number of possible reasons this can happen. Can you please try to narrow down which might be the cause based on your operating conditions at the time?

    As for the waveform here, why does VCC dip? Perhaps your input source is power limited and unable to provide the power that the charger is programmed to provide to the battery.


    Regards,

    Zack