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LM5051: FET selection inquiry for O-ring and hot swap solutions

Guru 10880 points
Part Number: LM5051
Other Parts Discussed in Thread: TPS2390,

Tool/software:

Hello,

My customer is considering using OR-ing (LM5051) and Hotsawp(TPS2390/1).

They have a question about the use of  MOSFETs in both devices.

Below are the application circuit diagrams for the two products.

  

There is a difference in the direction of the FET used in the two products.

Q1. It is believed that MOSFETs with different characteristics should be used for OR-ing and hotswap. Please tell us the requirements and methods for selecting the appropriate MOSFET for each of the two solutions.

Q2. Would it be a problem if they used MOSFETs with the same characteristics for OR-ing and hotswap, just swapping the directions?

Thank you.

JH