no charging circuitry exists on the VIN port, you must provide your own external charging circuitry, I think I have given a basic diagram of how to do so on your first post, very simple charging circuitries will do just fine, like one using the TP4056
Hi @Electr1,
Yes, I revisited that post and got it, thanks for this as well,
So if I do have one USB-C charger plugged in directly in USB power conenctor and parallel Battery is connected to Vin , in this case, does vim 3L have any priority for powering ?
I.e From Vin(Battery) and USB-C , who will get chosen ? (Not connected charging IC yet)
the VIM3 recently got some extra circuitry to elevate power priority for the VIN port, which I think already exists on the VIM3L, but I’d ask some one from the khadas team to verify that.
also note VIN doesn’t give power out if USB-C is connected, its purely the highest priority of the power input system (context: check the schematic for the power tree, you’ll see the VIN is at the top of the system)
1/Please confirm the hardware version of the VIM3L you have is V12 or V13?
2/the hardware version of V12: VIN=USBC;(The VIN connects directly to the USBC);
3/the hardware version of V13: Look at the schematic: