I have a design using a TPS65910A3A driving an Am3352. The voltage input to the TPS65910A3A is +5V. VAux33 and VAux2 are +3.3V as desired but VMMC is about +4.2V on powerup. When I push the reset button, it drops to +3.7V. Curiously, a previous design using the same TPS65910A3A circuit has the VMMC correct at +3.3V.
I see this on at least 3 boards and don't have any idea what is causing this as there is no voltage feedback loop to the PMIC.
Burt.