Can anyone from Gumstix comment on this?
From: Vinod Kumar [mailto:vinodsaharan@...]
Sent: Thursday, December 01, 2011 3:31 PM
Subject: [Gumstix-users] Voltage on VSYSTEM when VBUS is connected
I have designed a base board for OVERO FIRE COM which supports USB battery
charging. When USB cable is connected but no other power is applied, there
is ~0.9V on VSYSTEM pins from COM. Here only power applied to COM is VBUS
from USB which goes to PMIC on COM.
What can be the reason for this? I think that it is through PMIC that ~0.9
is coming on VSYSTEM. Is there any way to resolve it?