LM5117 vs. TPS4017 which one is the better solution?

Hi,

Could you please recommand which one is the best solution between LM5117 and TPS4017?

otherwise what is best solution?

that meaning is both aspect of performance(efficeincy) and compact design..

1) Normal requirement Spec range :

     Vin: 24 ~ 48V                       

Output Volt    Max Current                         

1.0V               8A                         

2.5V               4A                          .

3.3V               3A                         

1.8V               1A

2) wanted Spec :

   Input : 48V    Output : 1.0V

 in this case, Is that no problem to do operation? and how about T on Time at this case?

Thanks,

eric.