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TPS2H160-Q1: functional safety difference between A version and B version

Sherry Liang
Genius 10255 points
Part Number: TPS2H160-Q1

Dear team,

My customer plans to use our high side as a part of POC/power over cable circuit, and their whole power solution needs to meet ASIL B system level. My customer wants to know which version A or B is recommended considering the system functional safety level. Do you have any comments for this?

In addition, I don't understand the relationship between calibration and current sense function. Why there is no need further calibration with current sense function? Is the current sense used for calibration? How?

If we don't use current sense

Thanks & Best Regards,

Sherry

  • 0
    TI__Genius 16390 points

    Hi Sherry,

    Our device provides functional safety document here: https://www.ti.com/lit/fs/slvaek2a/slvaek2a.pdf that outlines the failure mode and potential failure probability. Customer can use this document for their ASIL B in the system. As for which device to recommend, it should be similar for both version, but rather which functions customer wants to use in their system (if current sense is needed etc.).

    For your question, I'm not sure if I understand it correctly, but no calibration refers to no calibration is needed for the current sense to be accurate - customer can expect the current sense to work within the datasheet spec without extra calibrations.

    Regards,

    Yichi