Other Parts Discussed in Thread: TPS65920
I have adesign where an OMAP 3530 is powered from a PMIC TPS65920.
The VMMC output from the PMIC is very low and the part gets overheated. There is no short-circuit on this output.
The rest of power rails to the OMAP are O.K.
Using an oscilloscpe, I observed a periodic signal of about 200uS Low time and a period of about 7mS from the OMAP SYS_NRESWARM to the PMIC NRESWARM input.
In addition, when the system is powered-up, the OMAP UART3 outputs the 40W string to the terminal, but with a slightly lower baud-rate than 115,200 (about 110,000bps).
Please advise.
Thanks -
Koby Kluger