You could refer to PMP15019 reference design | TI.com to check your schematic. There is also a short circuit test in the report of this reference design and get a correct result.
If the problem still exists, could you please upload your schematic for…
you can refer below PMP design
and you can also use webench or quick calculation tools for power dissipation
Part Number: LM25141-Q1 Other Parts Discussed in Thread: PMP15019 , LM5141-Q1 , PMP Hi,
Has the schematic implemented the LMx5141 passed the CISPR25 ed.3 level5?
Though EVM and PMP15019 seems not to pass it...
Best Regards, Kuramochi