Looking at BeagleBone Black rev C schematic and TPS65217C data sheet If the battery is connected to the Rechargeable Battery access pins (TP5/6/7/8 TESTPT1), The battery feeds the USB HOST VBUS '5V' through SYS_5V, the 3V to 5V booster would have to be an inline adapter plugged into the USB HOST connector, this is slightly non trivial. In theory, a booster input could be connected to SYS_5V on P9.7 (ground to P9.1) and booster output to an USB hub power input with Wi-Fi plugged into hub, however many hubs let the 5V hub power flow back into the host.
If a battery pack is just connected to the DC in Jack, the voltage should be 4.3V to 5.8V. The battery pack could be connected to a 5V booster input and the DC jack to booster output. On Thursday, 22 October 2020 at 12:22:03 UTC+1 [email protected] wrote: > Many Wi-Fi modules are designed for a Lithium cell which is 3V to 4.2V. > The first thing the USB part does is reduce the USB 5V to 3.3V > You can boost the battery to 5V with something like > https://www.adafruit.com/product/1903 > > On Thursday, 22 October 2020 at 10:15:28 UTC+1 pfrossard wrote: > >> Hi, >> I try to find an USB Wireless adaptors working at 5v and 3.3v (When BBB >> working on battery), >> I checking a lot of key without success ... >> Someone have an idea ? >> Thanks. >> >> -- >> - >> Philippe Frossard >> >> -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/e1ee1876-909f-4aea-b3d2-94f199f52a78n%40googlegroups.com.
