SM Bus to CAN bus

Those are entirely different protocols.

It might be possible to convert between two I²C lines and two differential CAN lines (four signals) on the electrical level, but I doubt that this is what is wanted. What is the actual problem to be solved?

Hi Archie,

Are they just trying to communicate through long cabling with the CAN bus but using SMBus as the protocol?

There's a reference design here on how to do it: https://www.ti.com/lit/ug/tiduei0/tiduei0.pdf?ts=1678398570115&ref_url=https%253A%252F%252Fwww.google.com%252F

I2C and SMBus share the same kind of open drain architecture and hardware so you can also treat this as a SMBus to CAN bridge.

-Bobby

Hi Bobby/Clemens,

We have been tasked to add a lithium ion battery onto a system that has CAN communications as the back bone. We have multiple batteries we developed that communicate over SMBus and in theory we want to just use what we know and convert the SMBus comms to a CAN protocol on the external.

Regards,
Archie A.

Hi Archie,

As Clemen's pointed out, you won't be able to bridge SMBus protocol and CAN protocol without a microcontroller which includes the SMBus and has a CAN engine. 

-Bobby