Hi,
I am using the reference design for the TPA3125D2 in BTL configuration with 20Vdc supply and the circuit performs just fine. I would like to drive 4ohm speakers up to 15 watts and when I tested I could get it to put out 10 watts before it would start to shut down.
I've paralleled the outputs of two of the reference designs simply by connecting the two LEFT OUTs and RIGHT OUTs. At low volumes (less than 2Vpp across outputs) it performs fine. At higher volumes there will be periodic muting of the outputs where the output will turn off for about 25ms. At even higher volumes the DC portion of the output drop to almost 0V for around 200ms.
Is there a better method for connecting the outputs than what I have done.
Thanks