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TCAN1042GV-Q1: Operation current for TCAN1042GV-Q1 and TCAN1042V-Q1

Part Number: TCAN1042GV-Q1
Other Parts Discussed in Thread: TCAN1042V-Q1,

Hi TRX Experts,

My customer wishes to use TCAN1042 in their design and they are currently designing the power tree which needs to know how much current could TCAN1042 consume.

Could you please help us to verify what is the ICC between TCAN1042GV-Q1 and TCAN1042V-Q1 under different speed of operation:

 

HS CAN 500kbps

CAN FD 1Mbps

CAN FD 2Mbps

CAN FD 5Mbps

TCAN1042V-Q1

Typical: ?? mA

Max: ?? mA

Typical: ?? mA

Max: ?? mA

Typical: ?? mA

Max: ?? mA

-

TCAN1042GV-Q1

Typical: ?? mA

Max: ?? mA

Typical: ?? mA

Max: ?? mA

Typical: ?? mA

Max: ?? mA

Typical: ?? mA

Max: ?? mA

RTERM = 60ohm

Thanks a lot.

Best Regards,

Wei-Hao

  • Hi Wei-Hao,

    The supply currents will be the same between both of these two device variants.  The average current required from the power supply under normal operating conditions is mostly a function of how much a given transceiver spends in the dominant state (in which the supply current is higher due to the driver sourcing current through the bus termination) versus the recessive state (in which the supply current is much lower).  You can read more about that in this post:

    In some cases users want to make sure to size the power solution such that it maintains regulation during fault conditions as well.  In most cases the worst-case fault would involve CANH shorting to ground (since the driver will try to pull CANH high during the dominant periods).  Under this condition, the TCAN1042 devices will have a maximum dominant-state ICC of 110 mA.

    Regards,
    Max

  • Hi Max,

    Thanks for the feedback, I will provide the link to my customer for power consumption analysis.

    Thanks a lot.

    Best Regards,

    Wei-Hao