• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 724 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.

ISO1050: Power consumption on the ISO1050 VCC2 side

user4499359
Intellectual 450 points
Part Number: ISO1050

Dear team:
I would like to consult the power consumption of the ISO1050 VCC2 side. My specific application uses two CANs and uses passive isolated power supplies. The power of passive isolated power supplies is not large. I would like to consult the power consumption when using two channels of ISO1050 VCC2=5v.

  • 0
    TI__Expert 6195 points

    Hello,

    You can find information on the power supply currents in section 6.5 of the ISO1050 datasheet (page 7). I've copied that section below:

    As you can see, you should size your power supply so it can supply 73mA for the Dominant state's maximum when you are transmitting. During normal operation the current draw will be a lot less than that though as you will have a stream of dominant and recessive. In the lab I typically see somewhere around 30mA for a square wave signal. 

    Best regards, 

    Dan