TCAN1051-Q1: Our CAN driver(e.g. TCAN1051-Q1) is voltage mode or current mode driver?

Ted Zhang

Intellectual 2280 points

Part Number: TCAN1051-Q1
Other Parts Discussed in Thread: TCAN1057A-Q1

HI Team,

Just want to quick check if our CAN driver(e.g. TCAN1051-Q1) is voltage mode or current mode driver?

Thanks.

over 1 year ago

0 Danny Bacic over 1 year ago

TI__Mastermind 24205 points

Ted,

The newer device is TCAN1057A-Q1 in place of the TCAN1051-Q1.

I'm not 100% sure what you mean by the question. CAN drivers are differential drivers, but they are current-limited in the event of short-circuit events. You will see these described in the Electrical Characteristics as things like "differential output voltage" for different conditions, or as "short-circuit steady-state output current" for short/fault conditions.

Best,

Danny

0 Ted Zhang over 1 year ago in reply to Danny Bacic

TI__Intellectual 2280 points

HI Danny,

Is there a constant voltage source to drive the CANH/L output or a constant current source to drive CANH/L output?

0 Ted Zhang over 1 year ago in reply to Ted Zhang

TI__Intellectual 2280 points

HI Team,

Any feedback for the question? If it's a current mode, what's the current source vaue?

Thanks.

0 Danny Bacic over 1 year ago in reply to Ted Zhang

TI__Mastermind 24205 points

Ted,

CAN drivers use GND and VCC as references when driving to create the differential signal, and the drivers are limited to 250 mA. In standard application it is uncommon to see the current limit come into play.

Best,

Danny

Interface

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TCAN1051-Q1: Our CAN driver(e.g. TCAN1051-Q1) is voltage mode or current mode driver?