• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 362 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS53667: IMON pin connection

K. Sasaki14
Guru 10200 points
Part Number: TPS53667

TPS53667 IMON pin requires RIMON and CIMON.

Are these the must components for digital current monitor?  Is the floating NG?

And can we use this pin for analog current monitor by monitoring IMON pin voltage? Or should not we connect any components other than RIMON and CIMON?

Best Regards,
Kohei Sasaki

  • 0
    TI__Expert 5965 points
    Hi,

    You can not float IMON pin. This pis is a current source output. The value of current source is VIMON/RIMON= (Iout*5mohm)/35k. The VIMON voltage corresponding to Imax is 850mV, but when this pin is folating, VIMON will clamp to ~1.7V. Note the over current threshold is Imax*1.25 so if this pin is floating OCP will be triggered.

    You can use this pin as analog current monitor, but please make sure you count the impedance of the measurement circuit and also make sure OCP will not be triggered.

    Regards,
    Weidong