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.
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>
>
>
> --
> Gerald
>
> [email protected]
> http://beagleboard.org/
> http://circuitco.com/support/
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--
Gerald
[email protected]
http://beagleboard.org/
http://circuitco.com/support/
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