speed07 1 Posted March 1, 2017 Share Posted March 1, 2017 Hi all, I'm currently doing a project consisting of msp 432 launchpad along with cc3100 BOOST. I need help in powering the msp and boosterpack from an external supply.I have a a 5v and 3.3 v regulator with me. Please help. Quote Link to post Share on other sites
Rei Vilo 695 Posted March 1, 2017 Share Posted March 1, 2017 Check the data-sheets for power consumption, especially the peek required by the CC3100 WiFi radio. 5V and 3.3V power rails are exposed. Check the schematics for the connecting the external power correctly, and for isolating the programmer/emulator part. speed07 1 Quote Link to post Share on other sites
speed07 1 Posted March 3, 2017 Author Share Posted March 3, 2017 @@Rei Vilo ,So i shud be powering both the boards separately? Can the wifi boosterpack tap power directly from the msp launchpad? Quote Link to post Share on other sites
Rei Vilo 695 Posted March 3, 2017 Share Posted March 3, 2017 What kind of external power do you plan to use? What kind of connection? USB could power both, LP + BP. The CC3100 data-sheet has a whole section about how to power. See http://www.ti.com/tool/cc3100boost. speed07 1 Quote Link to post Share on other sites
speed07 1 Posted March 4, 2017 Author Share Posted March 4, 2017 @Rei Vilo, I have 5 V and 3.3 V regulators setup with regulator ICs which are fed with a 12 V DC supply. I read in the document that while powering separately, we need to power the booster pack prior to the launchpad.So can I power the MSP launchpad with a 3.3 V and just plug in the boosterpack and place the jumpers so as to receive power from mcu. Thanks for the help, Sir. Quote Link to post Share on other sites
Rei Vilo 695 Posted March 4, 2017 Share Posted March 4, 2017 If you look at the CC3100 data-sheet, you'll see the BoosterPack has its own regulator to deliver up to 350mA. So there is no need to duplicate the 3.3V rail. Providing 5V to the LaunchPad is enough. Read section 2.4 Power of the http://www.ti.com/tool/cc3100boost data-sheet. speed07 1 Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.