Reply 4# sylwek2k |
Thank a lot. It means that banana pi (AXP209) not cut correctly ACIN, VBAT even BAT (Accu) from IPSOUT after shutdown. A20 switch of the STEP-UP driver but not switch-off IPSOUT. I need find way to switch off IPSOUT. Right now after banana shutdown (with connected LiIo accu) it drain accu over USB Wifi-Stick. Also shutdown is not possible because it make restart (I thing because of IRQ from AXP209). In AXP209 (english translation) PDF even AXP202 they write "When you push-and-hold PEK longer than IRQLEVEL, HOST can write “1” into“REG32H ” to inform AXP202 to shutdown, which can disable all power output except LDO1." and in electrical specification we can read about RDSON - Rds(on) On Resistance(BAT to IPSOUT) 75 mΩ" with means that is one MOSFET transistor between BAT input and IPSOUT output.
Thank you for your help