TCAN1145-Q1: Whether there is internal 330k frequency part?

Beida Song

Part Number: TCAN1145-Q1

Tool/software:

Hi Expert,

Customer do the CE test and find there is 330KHz, 660kHz failure. After stop communicating of TCAN1145, the 330KHz & 660kHz disappear. So whether there is internal 330k frequency part?

4 months ago

0 Sean Guo 4 months ago

TI__Mastermind 28930 points

Beida,

I don't think there is. The CE test is also system dependent, TCAN1145-Q1 requires using of common mode choke to pass specific EMC standard, can you share the testing board schematic?

Regards,

Sean

0 Beida Song 4 months ago in reply to Sean Guo

TI__Intellectual 810 points

Hi Sean,

I don't get the customer's schematic. For my first question: If there is 300kHz part inside TCAN1145-Q1? Do you have any comments?

0 Sean Guo 4 months ago in reply to Beida Song

TI__Mastermind 28930 points

Hi Beida,

From what I know, there is not. Can you ask them to provide the CAN frame pattern? It might be because of the pattern of dominant and recessive bits emulating a different duty cycle.

Please also check if they have CMC populated.

Regards,

Sean

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TCAN1145-Q1: Whether there is internal 330k frequency part?