i have a few questions how to power the Dragon Q6A:
Can i use a usual PD Supply for it ?
More important for me: Because i want to use the Dragon Q6A for an outdoor project, where i can’t use i regular Power Supply, i need to power it from a battery, i think it works with an DC DC converter, but how to connect to the board. One way would be the USB power connector, but near the power connector are 3 Pins, signed with 12V, GND and PWR. Are this Pins for powering the board to? If yes, 12V and GND are logical, but whats the PWR Pin for?
If I power the Q6A by a DC DC converter, - how exact has the 12V to be? Usualy there is a range which is possible…
And last “power question”: The Q6A has a few 3.3V Pins. How much power can this pins deliver? I need to power a STM32F411 board and it would nice if i can power it from the Q6A.
The USB Type-C port supports standard PD for 12V input, as well as 5V/3A input. Direct 12V power is also technically possible, but not recommended.
The 3.3V rail on the 40-pin GPIO header is supplied by the ETA3521, which is theoretically capable of up to 4A output. However, as this power line feeds multiple peripherals, it’s advisable to use an external step-down module to avoid overloading the onboard regulator.
The 3-pin connector was originally intended for a PoE HAT. The PWR pin functions as a power key, equivalent to the button next to the antenna.
You may apply an input voltage between 3.6V and 16V to the 12V pin—with 5V, 9V, or 12V being the recommended values. This input is then stepped down to 4.2V by the SY81012VDC.
Note: Do not use the USB Type-C interface if you are supplying 12V power externally.