Part Number: TCAN1145-Q1
Other Parts Discussed in Thread: TCAN1044-Q1,
Tool/software:
Hello,
I want to know power consumption for TCAN1145-Q1. For other transceivers like TCAN1044-Q1 you can see in the datasheet the dissipation ratings under specific conditions but for TCAN1145-Q1 is not available this information. I'm considering that TCAN1145-Q1 bus is 50% load.
Thanks
Hi JS,
CAN transceiver power consumption can be estimated as an average of the drive state (dominant and recessive) current draw. Because CAN transceivers draw more power for dominant (logic 0) an idle device will draw less power over time. At a bus load of 50% (assuming this device is transmitting 50% of the time) and a balanced data payload (50% 0s and 50% 1s), the driver will be dominant 25% of the time and recessive 75%.
P(avg) = %DOM * IccDOM + %REC * IccREC = .25 * 60mA + .75 * 5mA = 18.75mA
Let me know if you have any more questions.
Regard,
Eric Schott
