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TPA3112D1: Chip permanently faults after a certain input/output threshold.

Part Number: TPA3112D1
Other Parts Discussed in Thread: TLV320AIC3109-Q1,

Hello, I am a student who is creating a hardware application for the first time! I know a lot of things I'm doing is probably not proper so I would appreciate some advice!

Context: I'm building a bluetooth amplifier using the following components.

Bluetooth CC2564MODx
DAC TLV320AIC3109-Q1
AMP TPA3112D1
AMP Breakout TSSOP-28-EXP-PAD TO DIP-28 SMT
Microcontroller MSP430F524x
33uH Inductor Abracon LLC AIUR-06-330K
0.1uF Cap BC2665CT-ND
1uF Cap 445-173257-1-ND
0.47uF Cap 399-4513-1-ND
1000pF Cap BC2659CT-ND
Power Supply Ablegrid 24v 5A DC
Speaker 8ohm RTI3 speaker



I have only been prototyping the amplifier part of the circuit on a breadboard using the sample layout provided by the documentation. I used the second order Butterworth filter for my output filter. The circuit can cleanly play audio with an output power of around 6 to 10 watts. I have run through many problems, all of which have been errors on my part so far which resulted in several damaged chips. (Shorting pins, connecting the wrong pins). However I am now stuck on this problem and do not know how to troubleshoot to proceed further.

Problem: When playing music past a certain threshold the chip permanently faults. 

Testing Setup: Using the components in the table above and the sample layout in the documentation I built this.
The resistors and the electrolytic capacitor (rated 100V) are generic parts found in lab.

My computer's aux acts as the audio source, the gain pins are grounded, and we connect the output of the circuit directly to the speakers. I raise the volume of my computer from 0 to 100. At 50% volume the chip faults. I replaced the chip and breakout board and attempted this scenario again and the chip faults at 50% volume as well. No clipping occurs, audio just cuts out. Power cycling the chip and/or lowering the volume yields no output.

When probing the FAULT pin I can see that the pin is low. Every half second I can see a brief periodic spike and hear periodic small pops through my speakers as if the chip is attempting to restart itself. Chip does not appear to be visibly damaged. 


Questions:

  • Could the distance of the components of the chip cause problems to the point where it can damage itself? I was told that there could be induced inductance on the power rail with a high enough current which might damage the chip.
  • What other troubleshooting steps should I take/measure to determine the issue?
  • Who can I contact for suggestions/advice for chips for this project

    Thank you for your time in advance for looking over this. If you have any questions please ask me!