Hello, I am working on a fairly large UAV that utilizes one 4S 8000 mAh 100C battery and two 4-in-1 45A ESCs. I’ve read that a power module is selected based on input voltage (4S in my case), max. cont/burst current rating, and max. current sensing.
Regarding the max. continuous rating, is this the same as multiplying the ESC current rating by its quantity (45*2), or is it something else? I am a bit stuck in determining this part, and in generally selecting the power module such that it becomes compatible with the system.
If it is a pass-through power module (e.g. the battery voltage is fed into the power module which then outputs it to the motors) then the max current rating is likely based on the PCB of the power module (copper oz) as well as the components (voltage regulator) onboard that specific power module. Companies usually refer to the max current rating as that current drawn from the avionics (flight controller and sensors).
Ark and Holybro both sell good power modules that can work with a 4s battery. However depending on your flight controller (pixhawk) there might be specific versions of the holybro module that you would need to use.
