And mine. Gerald
On Fri, Nov 14, 2014 at 9:50 AM, Bremenpl <[email protected]> wrote: > Ill get it tested, thank you. If this worked it would solve my problem. > > Dnia 14 listopada 2014 16:41:30 Gerald Coley <[email protected]> > napisał(a): > >> The output voltage level is different. When the DC is contented it is >> supposed to go to the DC input and go into charge mode for the battery. >> Measure the output voltage of the PMIC. If it is 5V, then it is DC in. If >> it is 3.7V +/- then it is running on the battery. >> >> Gerald >> >> >> On Fri, Nov 14, 2014 at 9:37 AM, Bremenpl <[email protected]> wrote: >> >>> How can I know either it switched without taking the battery out? >>> >>> Dnia 14 listopada 2014 16:35:42 Gerald Coley <[email protected]> >>> napisał(a): >>> >>>> Another test here would be to connect the battery and see if after it >>>> switches to the battery if it switches back to the DC input. >>>> >>>> Gerald >>>> >>>> >>>> On Fri, Nov 14, 2014 at 9:31 AM, Bremenpl <[email protected]> wrote: >>>> >>>>> I understand, thank you for the info. I will make more attempts at >>>>> monday with another bbb board. For now I have a 10k resistor on the TS pin >>>>> because I intend to use the battery to. If the voltage is measured on the >>>>> resistor ill swap it to lower value one. I hope ill get it working using >>>>> meanwell power supply. >>>>> >>>>> Dnia 14 listopada 2014 16:16:30 Gerald Coley <[email protected]> >>>>> napisał(a): >>>>> >>>>>> Not likely. As I said we need more boards that fail and the power >>>>>> supply that is used with them. What I have seen is that it tries to >>>>>> switch >>>>>> to the battery, that is not there, for whatever reason. Theory is it >>>>>> sees a >>>>>> voltage drop due to the inrush limit on certain power supplies. I have >>>>>> fixed this on a few boards by connecting the TS signal hard to ground >>>>>> using >>>>>> the battery pins on the board. >>>>>> >>>>>> What I see when the board "does not power up" is the PMIC cycling on >>>>>> and off. You can look at the 5V output rail of the PMIC for this >>>>>> condition. >>>>>> >>>>>> Gerald >>>>>> >>>>>> >>>>>> On Fri, Nov 14, 2014 at 9:03 AM, Bremenpl <[email protected]> wrote: >>>>>> >>>>>>> I dont agree here, and this is the weird part. A cheap 5V wall >>>>>>> plug adapter works great and a certified meanwell supply does not. Can >>>>>>> it >>>>>>> be a case related to linear/ switching power supply? >>>>>>> >>>>>>> Dnia 14 listopada 2014 16:01:26 Gerald Coley <[email protected]> >>>>>>> napisał(a): >>>>>>> >>>>>>>> We are working on one if we can collect enough information to >>>>>>>> confirm the issue. it appears to be a power supply issue that creates a >>>>>>>> condition that the TPS65217C does not like. If you use a good power >>>>>>>> supply, >>>>>>>> the issue is not there. >>>>>>>> >>>>>>>> >>>>>>>> Gerald >>>>>>>> >>>>>>>> >>>>>>>> On Fri, Nov 14, 2014 at 8:31 AM, Bremenpl <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> Is there a workaround for this? I thought that pre charged >>>>>>>>> capacitors could help but in my application power to the BeagleBone >>>>>>>>> Black >>>>>>>>> is aplied in the same time as to the rest of the circuit. >>>>>>>>> >>>>>>>>> W dniu 2014-11-14 o 15:19, Gerald Coley pisze: >>>>>>>>> >>>>>>>>> The power management IC, TPS65217C. >>>>>>>>> >>>>>>>>> Gerald >>>>>>>>> >>>>>>>>> >>>>>>>>> On Fri, Nov 14, 2014 at 8:15 AM, Bremenpl <[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> What is the exact circuit that requires a fast ramp? >>>>>>>>>> >>>>>>>>>> W dniu 2014-11-14 o 14:48, evilwulfie pisze: >>>>>>>>>> >>>>>>>>>> As Gerald has said before, check the ramp up of the power supply. >>>>>>>>>> Some of the lab supplys have slow ramp ups. >>>>>>>>>> Yes they are very stable and VERY good regulation but >>>>>>>>>> the BBB design requires a fast ramp up supply. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On 11/14/2014 3:03 AM, bremenpl wrote: >>>>>>>>>> >>>>>>>>>> Hello there, >>>>>>>>>> I have a very strange problem with powering up BeagleBone Black >>>>>>>>>> (rev C).... When i try to power it up from some cheap AC adapter it >>>>>>>>>> works >>>>>>>>>> fine, but when I connect to to my labolatory power supply the power >>>>>>>>>> LED on >>>>>>>>>> board is lid for a second and then doesnt power up the MCU and turns >>>>>>>>>> off >>>>>>>>>> intead. I have connected both supplys to osciloscope and they are >>>>>>>>>> both >>>>>>>>>> stable, the laboratory one even more. Why is the power controller on >>>>>>>>>> the >>>>>>>>>> BeagleBone Black refusing to power up the MCU when powered from lab >>>>>>>>>> supply? >>>>>>>>>> I have no idea what is this about. I would aprichiate any help. >>>>>>>>>> -- >>>>>>>>>> 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/d/optout. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>>> --- >>>>>>>>>> You received this message because you are subscribed to a topic >>>>>>>>>> in the Google Groups "BeagleBoard" group. >>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>>> . >>>>>>>>>> To unsubscribe from this group and all its topics, send an email >>>>>>>>>> to [email protected]. >>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Bremenpl >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> 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/d/optout. >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> Gerald >>>>>>>>> >>>>>>>>> [email protected] >>>>>>>>> http://beagleboard.org/ >>>>>>>>> http://circuitco.com/support/ >>>>>>>>> -- >>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>> --- >>>>>>>>> You received this message because you are subscribed to a topic in >>>>>>>>> the Google Groups "BeagleBoard" group. >>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>>> . >>>>>>>>> To unsubscribe from this group and all its topics, send an email >>>>>>>>> to [email protected]. >>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> Bremenpl >>>>>>>>> >>>>>>>>> -- >>>>>>>>> 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/d/optout. >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Gerald >>>>>>>> >>>>>>>> [email protected] >>>>>>>> http://beagleboard.org/ >>>>>>>> http://circuitco.com/support/ >>>>>>>> >>>>>>>> -- >>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to a topic in >>>>>>>> the Google Groups "BeagleBoard" group. >>>>>>>> To unsubscribe from this topic, visit >>>>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>>>> . >>>>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>>>> [email protected]. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> -- >>>>>>> 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/d/optout. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Gerald >>>>>> >>>>>> [email protected] >>>>>> http://beagleboard.org/ >>>>>> http://circuitco.com/support/ >>>>>> >>>>>> -- >>>>>> For more options, visit http://beagleboard.org/discuss >>>>>> --- >>>>>> You received this message because you are subscribed to a topic in >>>>>> the Google Groups "BeagleBoard" group. >>>>>> To unsubscribe from this topic, visit >>>>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe >>>>>> . >>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>> [email protected]. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> -- >>>>> 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/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Gerald >>>> >>>> [email protected] >>>> http://beagleboard.org/ >>>> http://circuitco.com/support/ >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to a topic in the >>>> Google Groups "BeagleBoard" group. >>>> To unsubscribe from this topic, visit >>>> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. >>>> To unsubscribe from this group and all its topics, send an email to >>>> [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> 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/d/optout. >>> >> >> >> >> -- >> Gerald >> >> [email protected] >> http://beagleboard.org/ >> http://circuitco.com/support/ >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/xRPC_39ju9Y/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > -- > 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/d/optout. > -- Gerald [email protected] http://beagleboard.org/ http://circuitco.com/support/ -- 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/d/optout.
