Hello,

Parts used, an AC-DC converter, providing 28V 25A output. 700W
A boost converter with input of 20V 20A, upto 80V. its rated for 1200W.
A buck converter rated for 300W.

the boost converter will be set to, 30V 15A, 450W. and the buck converter will be set to 20V 2A, 40W.
Another buck converter will be set to 5V for the microcontroler.

I have my setup as follows, The connection would be, AC-DC output connected to boost, and two buck converters which will be parallel.

Do i add any line regulator or anything to the circuits so that current that goes to the boost converter is 20A and the rest 5A goes to the other two buck converters?
Also, i would like to add diodes, Can you suggest me what rating for the diodes? or do i add a fuse?

is there any better way to connect them?

 

IF you are still onboard, you have all those devices ready, or you design something ?
it seems that you have the devices ready, you just need to make a good installation.
Of course you can use diodes. Anytime a diode is good.