Other Parts Discussed in Thread: TAS880021A, , TAS880021
Hi,
My customer use TAS5780M(IC mark as TAS880021A).
When running some audio, the IC issues a spk_fault and no sound output for ~1.3S.
At this moment, we found SPK_Fault changes to low as below.
Ch1: spk_fault
ch2:Vdd
from spec, spk_fault is fault for overcurrent and over temperature.
it's hard to tell that it's from over temperature. because it happens sometimes in 1 min, the ic is still cold.
I measure the current to speaker. the max current to speaker is ~4.4A. It's still under 7.5A spec.
By the way, if I use external DC power supply to 18V VPDD, there is no issue.
any clue for this?
BR,
frank
BR,
frank