Problem with PMIC GAUX signal

[AhmedShameemM_1]

Hello,

 I am using MC34708 PMIC for i.MX 50 QS Board, and there is a problem in GAUX signal of PMIC. GAUX is supposed to be low when we give power supply,but in one of my board it becomes high after 12sec.Can any one help me to solve this problem. Waiting for reply......

Regards

Ahmed Shameem

[JorgeRama_rezRi]

Hi Ahmed,

Gaux will enable Maux when the USB charger is disconnected and Vaux is valid. It will disable Maux in case of a low voltage or over voltage condition, or if the USB charger is present. What voltage do you see at VBUS and VAUX when the issue occurs?

Best regards.

Jorge.