How can I calculate the max current flowing through a trace , which is needed to calculate a trace width

made a circuit using rasppie pico and now I have to route the pcb , I don't know how much max current flows through the power trace , I have many peripherals connected to my circuit

You need to calculate the sum of the (peak) current consumption of all the components/peripherals to get your total (max) current consumption, so you can calculate your power trace width.

You can find all the current information in there respective datasheets.

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