TPS546D24A: How to calculate the RL Model parameters of TPS548D26 &TPS548A28?

Part Number: TPS546D24A
Other Parts Discussed in Thread: TPS548A28, TPS548D26

Tool/software:

dears,

How to calculate the RL Model parameters of TPS548D26 &TPS548A28

seems TPS548D26 has no SIMPLIS and Pspice model on the webpage. 

thank you!