AM3358: Power leakage

Zachary Zelenka

Part Number: AM3358

Custom design. Symptoms below. Trying to find the root cause, because I'm not able to use my USB0 or USB1.

VDDSHV_3P3V measures ~4.1VDC instead of 3.3VDC; SYS_RTC_1P8V measures a little over 2VDC

0 Biser Gatchev-XID over 6 years ago

Hi,

I would suggest that you check these possible reasons:

1. Incorrect power supply design.

2. Make sure that no external voltages are present on AM335x I/O pins before the device power supplies have fully ramped-up and stabilized.

Processors forum