TPS3850: TPS3850 in safety application

Part Number: TPS3850
Other Parts Discussed in Thread: , TMS320F2800157

Tool/software:

In a previous thread, I inquired about the ASIL rating of the TPS3850, and the response was as follows: "The TPS3850-Q1 is not an ASIL rated device. However, we do have functional safety information (FIT, FMD, & FMA) that can be used by the functional safety assessor to perform system level ASIL calculations."

For my current project, which is targeting ASIL B, we have disabled the internal watchdog for the TMS320F2800157. My thought is that enabling the internal watchdog and supporting it with the external watchdog (TPS3850) might suffice to meet the ASIL B requirements for this project.

Do you have any thoughts or recommendations regarding this approach? Specifically, are there any considerations or additional steps we should take to ensure that this configuration will adequately cover the ASIL B requirements?

Thanks,