Other Parts Discussed in Thread: TPA3111D1
Hello,
My customer is facing problem on the target board.
The device should be shout down when speaker output OUTN and OUTP are shorted. but over current protection doesn't work at the time, then filter after SP_L2_OUT_DB1 pin is burned out. (please see below schematic) AT the time, no FAULT asserted.
On their experiment,
If SP_L2_OUT_DB1 connects direct to GND, no over current protection work, SP_L1_OUT_DB1 is the same. No FAULT asserted.
If these signal shorted in TPA3112D1 side from LC filter, then over current protection work well, FAULT asserted.
Please check below schematic and give your comment. That relay device at speaker output is always ON.
Best regards, Katsu
