Thanks Charles & Liyoshi for your inputs! Btw. , Are there any chips which will specifically remove the high ripples @5V yet allow around 1.5 A current to flow ? Would a low ESR 10uF/100uF/1000uF cap between SMPS & Beagleboard XM do the job?
Best Regards, Tushar Date: Wed, 9 Oct 2013 09:07:29 +0800 Subject: Re: [beagleboard] Is it safe to power Beagleboard XM Rev B with 5V Supply of PC ATX SMPS? From: [email protected] To: [email protected] 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. -- 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.
