Hey Ron, Yeah - the TPS5430 (or TPS5431) does look like a nicer chip for what I want. Thanks for pointing that out.
Dave Hylands On Tue, Nov 12, 2013 at 12:18 PM, Ron B <[email protected]> wrote: > Dave, I will be making schematics available for all of my projects as they > get finalized. The schematic and layout for the TPS63061 is actually pretty > straight-forward. The only tricky part is the size of the footprint (3mm x > 3mm). If you only need a buck regulator, there are other options in > friendlier footprints (like SO-8). For example, I'm considering something > like the TPS5430 for the BeagleDrone project where the power source will be > 3S or 4S LiPoly packs. > > > Thanks, Juanjo. One of my requirements for those boards was to be able > to power a BB from vehicle power. I do have another board planned which is > almost exactly what you've described: PowerCape + battery charger. It will > automatically switch to battery power on DC loss, and charge the battery on > DC restore. > > -Ron > > > On Tuesday, November 12, 2013 8:53:11 AM UTC-6, Juanjo wrote: >> >> Your PowerBar and PowerCape are great. PowerBar is quite interesting for >> Automotive applications where you got 12-14V power. >> >> I'm really looking for a UPS like cape which can give me backup power via >> a LiPo/LiIon in case main power goes out and re-charge the battery. Maybe >> is a good feature for next version of PowerCape >> >> Currently we can only have 1 LiPo/Ion backup with the included TPS but >> just limit us to 3.3V rail of the BBB and not the 5V rail which usually >> supply extra capes and USB. >> >> On Monday, November 11, 2013 7:32:22 PM UTC-3, Ron B wrote: >>> >>> Dieter, you're right, linear regulators do waste a bunch of power. Just >>> FYI, I took a *quick* look at the ADP1111 and it doesn't look to me like >>> it's going to have enough power for the BB. >>> >>> I'm using the TPS63061. It's a great part but the footprint isn't >>> exactly prototype friendly. If you're interested, I have a small write-up >>> and pic of my board here <http://andicelabs.com/beaglebone-power-bar/>. >>> >>> -Ron >>> >>> On Monday, November 11, 2013 3:22:39 PM UTC-6, Dieter Wirz wrote: >>>> >>>> Ron is perfectly right! >>>> And where do you get cheap rechargeable batteries? >>>> LIPO prices are going down >>>> alcaline prices are going up >>>> >>>> Do you really want to invest time and money in last millennium >>>> alcaline technology? >>>> >>>> 7805? If you connect 9v to an 7805 about 40% of the power is converted >>>> to heat. There are much better solutions available. >>>> >>>> BTW @Ron: What buck/boost regulators are you using. Maybe you can >>>> provide some hints to the community... I have the ADP1111 sitting on >>>> my Desktop, but I did not find the time to solder something >>>> together..... >>>> >>> > <http://www.davehylands.com> > -- 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.
