Tool/software:
Hi TI team,
After performing stress test(monkey test) on audio system design with TAS6424E-Q1 audio amplifier, over current fault is detected on four channels: address = 0x10, value = 0xF0
In the mean time, the fault pin(no.26) is inactive. (Pull high)
It seems that the FAULT pin and OC fault register status is not matched logically.
It is supposed to be either: FAULT pin is active + fault register is detected or FAULT pin is inactive + fault register is not detected.
Besides, there is no reasonable condition to make OC happen based on the following setup:
a. The system is supplied from only an 2A power source. The input power is not enough to produce high current and trigger OC threshold.
b. Channel output connect to Hi-z node for output monitoring.
There are two questions we need TI's input:
Q1: Is it possible that FAULT pin is inactive while fault register is detected?
Q2: Is there any possibility to cause OC fault in our condition?