I'm working on a power distribution board which is going to distribute to several other devices/boards. Due to the high current requierment of the all the devices in total (about 29A - mix of 5V, 12V, 3.3V - mainly most current at 12V), I've decided to have 3 inputs to my board from the same battery. (my connectors were limited to 13A each)
Now, the 4s 18650s (not sure how many in parallel yet.) will have a nominal voltage of about 14.8V. Thus, I need to buck this down to 12V for each of my inputs.
Now the issue I have is that I can't seem to find many buck converters that will operate with an input of about 14.8 and give me 12V out, they're too close.
So I'm thinking, if I go with a 5s instead and then I'll have 18.5V nominal, I can easily buck that down with an IC such as the MAX20745. Would that seem like a reasonable solution?