External Power Supply

[martin_stojanovski93]

Posted on September 11, 2013 at 21:17

Hello dear forumers,

I have troubles finding any tutorial how to supply my stm32f3 with an external power supply.Are there any particular things i should be aware of, or should i just plug in stable 5V  between a 5V and ground pin?Im a newb, so sorry if  my question sounds obvious.Regards, Martin #external-power-supply

[jpeacock2399]

Posted on September 11, 2013 at 21:36

Is this a custom board or an eval kit?  In general the voltage in is determined by the voltage input range of the regulator on the board.  That can be anything from 5V for a linear regulator to more than 48V for a buck switching regulator, depending on the board design.

Look at the board schematics, find where power goes in, trace to the regulator, and then check the data sheet for the regulator electrical specs.   Jack Peacock