TPA3110D2: The loudspeaker stalled when playing some music

Teddy10086

Intellectual 275 points

Part Number: TPA3110D2

Work voltage:26V

loudspeaker:20W 4Ω

volume:85%

The Loudspeaker stalled when playing some music.Like the 27.mp3.

The speaker stuck for 1 minute and 24 seconds of the music, then returned to normal after 400ms.

As can be seen from the current, there is no overpower.

I'll put the schematic down here.

Can you help me find the reason?

Best Wishs.

over 4 years ago

0 Robert Clifton56 over 4 years ago

TI__Mastermind 28240 points

Hi Teddy,

Could you look and record the output signal during the time it's no longer outputting music? This would help us determine what's going on.

Best Regards,

Robert Clifton

0 Teddy10086 over 4 years ago in reply to Robert Clifton56

Intellectual 275 points

Hi Robert,

Below is the output signal during the time it's no longer outputting music.

Figure 1 shows the voltage between the positive and negative terminals of a speaker.

Figure 2 shows the voltage between OUTPL and GND.

Best Wishs,

Teddy

0 Teddy10086 over 4 years ago in reply to Teddy10086

Intellectual 275 points

Hi Robert,

The test conditions are different in Figure 1 and Figure 2.

The test volume in Figure 2 is higher and the source gain is higher.

Best Wishs,

Teddy

0 Luis Fernandes de Pina over 4 years ago in reply to Teddy10086

TI__Genius 15260 points

Hello teddy

Can you capture a zoomed in image of the output switching during this condition where the output shuts off, can you also capture the fault line in this image.

best regards,

Luis

0 Dylan Yao over 4 years ago in reply to Luis Fernandes de Pina

TI__Genius 11100 points

Hello Teddy,

As no more feedback almost one month, i will close this topic now. If you more follow up, just post on this thread to reopen.

Dylan

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TPA3110D2: The loudspeaker stalled when playing some music