Part Number: TPA3136D2
Hello team,
I received a question from the customer.
When the LC filter constant is configured with 10uH and 2.2uF, no audio is output. Could you please investigate the cause?
The conditions are as follows.
[1] Based on the evaluation results of EMI measurement, an LC filter was implemented in the audio output section of the TPA3136D2 as an emission countermeasure.
[2] The filter is configured with the recommended constants of 33uH and 1uF in the data sheet for a speaker impedance of 8Ω.
[3] Confirmation of normal operation
[4] Changed the constants in consideration of the mounting conditions, and changed the configuration to 10uH, 2.2uF, which is close to the constants and cutoff frequency on the data sheet.
[5] Output voltage became 6V constant for both positive and negative, and no sound was output.
Regards,
Masa
