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LM5177: Failure mode to ensure PELV system

Part Number: LM5177
Other Parts Discussed in Thread: , LM5176

Tool/software:

Hi Ti,

I am working on an application that is powered by a battery source (22V-57V). In this design, I intend to implement a buck-boost converter using the LM5177.

To comply with PELV (Protective Extra-Low Voltage) system requirements, I need to ensure that the output voltage of the LM5177 does not exceed 60V, in the event of a single fault in the LM5177.

Could you please provide insights on:

  1. The potential failure modes of the LM5177?
  2. How to ensure that Vout remains within the 60V limit under fault conditions?

Thank you.

Best regards,
Soeren