TIDA-010242: increase the current/power capability

To whom it may concern,

I have the following question about the TIDA-010242 MIL-STD-1275E reference design:

I am traying to understand how does the TIDA-010242 circuit work and I would like to customize it for my application by increasing the output current/power capability. What are the modifications that I should make to the circuit to increase the current/power capability from 4.3 A to 10 A, 20 A or even higher? Thank you.

Regards,