ESD2CAN36-Q1: TCAN1057 ESD protection

Haiwen Huang

Part Number: ESD2CAN36-Q1
Other Parts Discussed in Thread: TCAN1051, ESD2CAN36, ESD2CAN24-Q1, , ESD2CAN27-Q1

Dears:

We are currently designing a 24V automotive system and plan to use the 36V CAN ESD protection diode ESD2CAN36DBZRQ1 to protect the CAN transceiver TCAN1057.

Regarding this combination, we have the following questions:

Clamping Voltage and Protection Effectiveness: Since the 36V ESD diode has a relatively high clamping voltage over 60V, can it effectively protect the TCAN1057 +/-58V from transient ESD strikes? Or is it highly recommended to switch to the TCAN1051 instead for better compatibility?
Customer Use Cases: Are there any existing production-proven customer applications or reference designs utilizing this exact combination (ESD2CAN36 + TCAN1057) in 24V systems?
Validation & Testing Data: Has TI conducted any specific correlation testing, system-level ESD testing, or failure analysis for this specific combination? If so, could you share the relevant test reports or application notes?

Thank you for your support, and we look forward to your professional advice.

1 month ago

0 Bryan Rodriguez de San Miguel 1 month ago

TI__Expert 7690 points

Hi Haiwen,

We have seen combination of using ESD2CAN24-Q1 in combination with several +/-58V CAN transceivers. It looks like TCAN1051 also has a +/-58V rating which would bring the same concerns that you have for TCAN1057.

Can you share the specific reason why we are looking at ESD2CAN36-Q1 instead of ESD2CAN24-Q1? Are you worried about STB scenarios?

Best,

Bryan

0 Haiwen Huang 1 month ago in reply to Bryan Rodriguez de San Miguel

TI__Intellectual 2850 points

Hi Bryan:

Due to below post, it recommends ESD2CAN24-Q1 for 12V system, ESD2CAN36-Q1 for 24V system. Please help check if it is right. Thanks.

e2e.ti.com/.../faq-can-esd-protection

0 Bryan Rodriguez de San Miguel 1 month ago in reply to Haiwen Huang

TI__Expert 7690 points

Hi Haiwen,

We have to ensure that the ESD2CAN36-Q1 clamping voltage is lower than the abs max rating of the transceiver we are protecting. In this case it is very close which is why I would recommend a higher abs max rating CAN transceiver "H".

We are also releasing a ESD2CAN27-Q1 in 4Q which you could also potentially use in this application, and its clamping voltage is below the 58V abs max rating of your transceiver.

Best,

Bryan

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ESD2CAN36-Q1: TCAN1057 ESD protection