As I remember , BeagleBoard Xm will have a limit of power protecter . over 5.3v or lower than 4.xv (not clear about this ) You will not be able to power up the board . TPS65930 will not power up the omap3730 ATX power 5V will always have the very big ripple .
If you can boot up normally , ignore this . 2013/10/8 Charles Steinkuehler <[email protected]> > On 10/8/2013 9:37 AM, tushar gurjar wrote: > > > > > > Hello, > > > > Is it safe to power Beagleboard XM rev B with the +5V DC output of PC > > ATX SMPS directly or should a linear regulated 5V supply be used > > instead to be on the safer side? > > > > In other words, does the Beagleboard XM have circuitry to handle 5V > > SMPS supply input ? > > Well, the "wall-wart" supplies recommended for the BeagleBone are all > switching-mode power supplies, so the ATX supply should work just fine. > > Note that you do need to have enough load on the supply for it to > operate properly, there are different 'flavors' of ATX supplies and they > have different minimum load specifications. Also note that the 5V aux. > supply (that is on all the time) is rated for 2A on almost all recent > ATX supplies. I plan on running the 'Bone off the 5V aux. rail so it's > on all the time, and using the switched 5V and 12V to drive my 3D > printer so "machine power" is only active when I'm printing something. > I haven't done this yet with the 'Bone, but it's how I had the Arduino > controller hooked up, and it worked fine. > > Also, if you're _only_ using the 5V aux supply for the 'Bone, you don't > need to worry about turning the ATX supply on or having a proper load on > the higher-current 5V and 12V lines. Just hook up two wires and you're > done. :) > > -- > Charles Steinkuehler > [email protected] > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
