I am using MP2762A in a new application and so far everything seems fine.
I just noticed that I can’t read battery voltage (also current) when Vin is not available (no charge ongoing) unless I set OTG mode.
However when using OTG mode i loose charging capabilities (which is logical).
Is there any way to read out battery voltage when there is no VIN available?
When Vin is absent, the MP2762A powers the system from the battery through the
integrated BATTFET (Q7). When the input is absent and OTG mode is
disabled, the part is set to Battery-Only mode and I believe you can read the battery voltage via REG16~17H register in the IC.
Thanks for your reply.
Unfortunately i just tested and R16~17H are read as 0 when Vin is absent, same consideration is valid for R18~19H.
I can hereby confirm that Vsys is available.
I tested with the evaluation board and as you can see from the picture below, the same behavior is observed.