Thanks, I have been experimenting with different cap values and am not seeing any irregular voltage drop on the output of my regulator. I might decide to use a DCDC converter. Which regulator are you using?
On Wednesday, March 5, 2014 1:20:49 PM UTC-8, [email protected] wrote: > > [email protected] <javascript:> wrote: > > [-- text/plain, encoding 7bit, charset: UTF-8, 22 lines --] > > > > > > Using the Beaglebone black Revision A6A. I powering it with supplying 5V > to > > the Vdd pins. The 5V is coming from an adjustable regulator with an > enable > > line. Also I have a 10uF tantalum capacitor on the regulator's output to > > avoid sending a noisy 5V. > > > > When that enable line goes high, the beaglebone black does not power on > all > > the time. Sometimes the BBB boots properly. However, instead of > powering > > on sometimes, it seems that the power management chip on the BBB is > > switching Vdd to no load. I still have a similar result with different > > tantalum cap values. > > > > What is the state of the switch in the power management chip on a rising > > edge of Vdd? Has anyone else had a problem powering the BBB with Vdd? > > > I'm doing almost exactly what you're doing except that my regulator > chip doesn't have an enable line. So far it has worked exactly as it > should, applying power by plugging the 5v supply into pins 1 and 3 on > P9 just powers the BBB up as normal. I only have a .33uF tantalum on > my regulator input and nothing on the output. > > -- > Chris Green > ยท > > -- 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.
