John, thank you for your feedback! Looks like the central question what is the "correct power supply", moreover what is the standard to protect from overcurrent by power supply.
1). Oldest method is: fuse. 2). Old method is: if the load heavy than power supply capability then limit current to maximum (decrease output voltage). 3). if the load heavy than power supply capability then decrease output voltage using diffrent characteristic. 4). If power supply detect overcurrent, then switch of output voltage for specifyed time and then try it again. Next question is: how long overcurrent is overcurrent? a). Overcurrent for 1ms? b). Overcurrent for 100ms? c). Overcurrent for 1s? Present method used by BBB is match just for power suppy which use method 2b and c. That is why I say, moving "CAP" from TPS2051 IN to OUT make board compatible power suppy which use method 1-4 (near all). But the main probelm is: manufacturers not specify what is the current protection method for its power supply. Therefore you cannot select "correct power supply" which use method 2. Othersides I understand your cost problem. But current board has enough space to place one more 10uF 10V capacitor (see C7, C8, C10, C13). And it is cost less than 0,01USD. I think is this worh for mouch wide power supply compatbility. -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/2cab5de7-371e-4af5-aaae-1d5068f3e855%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
