Making a Carrier Board capable of 6S battery input

[imagidan]

Hello,

I am planning to have a 6S battery so about max of 25.2V as the input voltage to my carrier board. I am wondering where and it what ways I will have to make changes to the schematic of the xavier nx devkit carrier board.

I will have to change the zener diode voltage, have some higher voltage rated capacitors and maybe have more capacitors since the noise caused by the motors of a drone which this carrier board will be on is high. Also since voltage fluctuation should be expected to be high, maybe I should also have quite a margin between the battery max voltage and the voltage rating of the capacitor. Is this correct?

I am also wondering if the DC Jack unplug circuit on the button Power MCU schematic page has to be changed because of the higher voltage of the battery since I don’t quite understand the circuit and haven’t found an explanation on this circuit.

Here is the circuit I am talking about:

Thanks in advance,
Daniel

[Trumany]

Hi, do you mean change on devkit or your custom board? Devkit is only for development and should not be changed for product, and its DC power supply should be 9~20V. If on your own custom board, suggest to convert VDD_DCIN to proper level first. The unplug detection circuit can be kept.

[imagidan]

Hi,

This is for a custom carrier board. My 5V output DC DC regulator would be able to handle the voltage of 26V so shouldn’t I just put my zener diode voltage higher and use some higher voltage rated capacitors? I don’t want to lose so much efficiency by having 2 regulators to get me to 5V.

Thanks,
Daniel

[Trumany]

That’s OK then.