TPA3117D2EVM: Speaker voice is small

Roy Chou1

Part Number: TPA3117D2EVM

Hi team,

I apply the TPA3117D2EVM and I input the audio in LIN and connect a 8ohm speaker to LIFT+/-. And there is no voice output from speaker. May you let me know if there is anything we need to check?

Roy

over 4 years ago

0 Luis Fernandes de Pina over 4 years ago

TI__Genius 15200 points

Hello Roy,

have you referred to the user guide to see if your jumpers are configured correctly. Can you provide a picture on how you configured the EVM?

best regards,

Luis

0 Roy Chou1 over 4 years ago in reply to Luis Fernandes de Pina

TI__Genius 16505 points

Hi Luis,

Please see below.

Roy

0 Yanming Gong over 4 years ago in reply to Roy Chou1

TI__Mastermind 19880 points

Hi Roy,

How about the audio input connection? Did you plug in cable into RCA? if no, the RCA connector will make audio input to GND.

I suggest you can check if audio input signal on device pins.

Regards,

Derek

0 Roy Chou1 over 4 years ago in reply to Yanming Gong

TI__Genius 16505 points

Hi Derek,

We checked the LIN signal is ok, but there is no voice from EVM. May we have a short call to discuss the topic? Call me if you are available.

Regards,

Roy

+1 Yanming Gong over 4 years ago in reply to Roy Chou1

TI__Mastermind 19880 points

Hi Roy,

You should check if output pins have PWM switching signal output, on device side.

And which input signal did you plug in? From the waveform, it seem noise.

As talked, check the PWM signal and SDZ pin.

Regards,

Derek

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TPA3117D2EVM: Speaker voice is small