I am working with the TPA3123D2EVM. When looking at its performance over temperature I found that in a temperature chamber set to +40C the TPA3123D2EVM will not power up properly or output any audio. The chip on the board gets really hot in this scenario without any audio input/output (just quiescent current).
When the board does power up and is operational, the Iq I see is around 35-50mA. When the device fails to power up properly, the Iq of the board is between 100mA and 150mA and the IC gets very hot to the touch. In this state, injecting an audio input signal will not produce any audio output.
Are there any known issues with this audio amp IC/eval board or could I have gotten a defective eval board?