We are building a compact device where it needs to log the CAN bus data. We have chosen the TACN1042 CAN transceiver and ISOW7741 digital isolator. Since the solution needs to be compact and cost-effective we wanted to have an option on our board where we can skip populating ISOW7741 when we do not need it. In ordered to achieve this goal we have 2 options with us. One to extend traces below the ISOW7741 IC or take a traces bottom side of the PCB through the via holes and keep it available to mount jumpers (0E) to establish the direct path between CAN transceiver and MCU(Microcontroller unit). I have read all the design guidelines from the ISOW7741 datasheet and it is quite challenging to achieve in our system. Can you please give us your view on our design concept?
There is one more question about the efficiency of the power conversion in ISOW7741. The datasheet says it requires 5V - 600mA current to get a full 5V 110mA output. What is the efficiency of this integrated power converter of ISOW7741?
Looking forward to your valuable feedback and answer.
Thanks,
Ravi