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TAS5352A in 2.1 mode

Emil Petersky
Prodigy 180 points
Other Parts Discussed in Thread: TAS5548, TAS5630B, TAS5352A, TAS5352

Dear Sirs,

I'm preparing application based on TAS5548 + TAS5352A. The system should be run in 2.1 mode (stereo + subwoofer). Is it possible to configure TAS5352A in such way, that we can run stereo in SE mode and subwoofer in BTL mode? I have seen such configuration in TAS5630B datasheet (figure 17) but not in TAS5352A.

Thank you very much.

Best regards,

Emil Petersky

  • 0
    TI__Guru**** 189399 points

    Hi, Emil,

    Welcome to e2e, and thanks for your interest in our products!

    This should be possible, but I'm not sure how exactly you need to set up the TAS5548. I have asked my colleague to comment on this next week.

    -d2 

  • 0 in reply to Don Dapkus
    Prodigy 180 points

    Hi, Don,

    thank you for your reply.

    If I understand it correctly, I should configure TA5352 as 4x SE [M3,M2,M1] = [1,0,0], than connect

    PWM1_P to PWM_A

    PWM2_P to PWM_B

    PWM3_P to PWM_C

    and finally inverted singnal form TAS5548

    PWM3_N to PWM_D.

    Am I right?

    The safest configuration of TAS5548 is to use AD modulation on all 3 channels, I think, but of course, this is not the most effective one... If you or your colleague will give me some hints, I'll really appreciate it.

    Thanks and best regards,

    Emil

  • 0 in reply to Emil Petersky
    TI__Mastermind 33420 points

    Hello Emil:

    Yes, you are correct.

    Set TAS5352 to SE mode 1 (1, 0, 0 for M3, M2, M1 respectively).  Connnect PWM_P_1 on TAS5548 to PWM_A on TAS5352.  Connect PWM_P_2 on TAS5548 to PWM_B on TAS5352.  Finally connect PWM_P_3 on TAS5548 to PWM_C on TAS5532 and PWM_M_3 on TAS5548 to PWM_D on TAS5352.

    Yes, AD modulation is the safest since TAS5352 PWM_C and PWM_D are not configured in BTL mode.

    Please let me know if you have any questions.

    Best regards,

    Tuan

  • 0 in reply to Tuan
    Prodigy 180 points

    Thanks Tuan for your answer.

    Best regards,

    Emil