5v Power supply and Android

Dragon Series
1

According to the official Radxa website, the Dragon Q6A has a 5V input/output. Is it possible to power the board with 5V via the GPIO pins?

2

Hi Luiz,

The Type-C port and the 12V power input pins next to it can accept 5V power input. Please make sure to use a power supply that is at least capable of delivering 5V 3A for stable operations.

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3

Thanks for the info. As there seems to be just a voltage regulator behind this: Can you tell me, how much “over voltage” above 12V will be acceptable? E.g. when using with a 3S LiOn battery, this provides 12.6V when fully charged (or a car 12V battery that can be charged up to 14.4V)?

4

It can handle 3.6V 4.5V to 16V power input.

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5

Thanks, but with less than 5V, the USB outputs would not get enough voltage - or do you have also a step-up regulater for that onboard?
Do you know the voltage drop from the regulator? I assume, it should be powered at least with 5.3V in order to get 5V on the USB ports?

7 
Thank you, it helped a lot.
8

The power flow is:

ADP12V (Type-C port and the 12V power input pins) → SY81012 DC/DC regulator → VPH_PWR / VPH_PERI (constant 4.2 V) → SY7120 Step Up Regulator → VCC_5V_PERI (constant 5 V for USB and other peripherals)

So, accounting for voltage drops and reliable operation of SY81012, it can handle 4.5V to 16V power input. Sorry for the incorrect infomation before.