I plan to power 5 SBC boards through a single power-supply. Each board consumes 5V at 3A max. The power source is ordinary 230VAC (EU). I am uncertain how to connect everything in a sane way.
- Power-supply candidate: MeanWell HRP-75-5
- DC 5V power connector: Pins or Barrel
- Board: Rock64 SBC with attached USB 2.5" drives
I want to operate this 24/7 under normal indoor conditions. Eventually everything should be contained in a box. But until then it has to lay open. The solution has to be quiet and should not produce much heat. The 5 boards should consume power roughly in the same dimension. If one malfunctions or gets plugged off, it should not impact the others.
Do I need additional elements between the power-supply and the boards? e.g. limit the max current to 3A.
How to split the power into 5 lanes? Should I build a Stripboard or can it be done as a heat-shrink-tubed bundle of wires?
There are a lot of power-supplies similiar to the one I picked. What specs should I look out for except the total Watts?
Does it make sense to use a bigger power-supply in the 100 Watt range to get higher efficiency or lower heat? The pricing seems close.
Thanks a lot.