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TAS5828M: TAS5828M Mono amplifier

Mayuresh Vaidua
Prodigy 40 points
Part Number: TAS5828M
Other Parts Discussed in Thread: , PUREPATHCONSOLE

Hi,

I am currently trying to design 4.1 system using external DSP (ADAU1701) which will output SDATA/ LRCK & BCLK. I am planing to use TAS5828M as Subwoofer amplifier. I have following questions before I place the order for PCB and goahead with the project.

1. I am following www.ti.com/.../tas5828m.pdf (9.2.4 MONO (PBTL) Systems) schematic AS IS. Is there any additional changes I need to incorporate to run the AMP? I am using external 3.3 LDO to drive DVDD.

2. Do I need to have PurePath? I was checking, and I was not sure if PurePath supports tas5828m.

3. If there is anything that I am missing.

Thank you in advance.

-Mayuresh

  • 0
    TI__Genius 14760 points

    Hello Mayuresh,

    1. Register configurations are needed to put the device into PBTL
    2. Yes there is a TAS5828M PPC3 app that you can request, we recommend using this for configuring the device registers/DSP. There's a PBTL configuration mode you can select in the app
    3. The register config is the main one.

    best regards,
    Luis

  • 0 in reply to Luis Fernandes de Pina
    Prodigy 40 points

    Hi Luis,

    Thank you for the reply. So, the schematic AS IS would work, right? Will request for PPC3. 

    Thanks
    -Mayuresh

  • 0 in reply to Mayuresh Vaidua
    TI__Genius 14760 points

    Hello Mayuresh,

    Yes. The main difference in PBTL is the output configuration. You can use 2 inductors and combine the connections before your output L-C filter as in the typical applications diagram or you can use 4 inductors and combine the post filtered output connections accordingly to your load.

    best regards,

    Luis

  • 0 in reply to Luis Fernandes de Pina
    Prodigy 40 points

    Great. Thanks. 

    Also,

    I have raised a request for PPC3. However, I would like to know if I have to purchase any EVM for TAS5828M or I can have access to PPC3 and connect it to my own designed AMP with i2c? Asking, because I read following on the PPC3 page.


    *Devices require proper credentials to download from the App Center. Refer to the device’s EVM web page on TI.com for details.

    Get started
    Order an EVM for one of the parts listed below

    I have already made a provision to connect SDA & SCL to AMP. Is there any additional provision I need to make or do I need to purchase any module from TI for the connection?

    Thanks
    -Mayuresh

  • 0 in reply to Mayuresh Vaidua
    TI__Genius 14760 points

    Hello Mayuresh,

    We greatly recommend using the TAS5828MEVM when evaluating this device for your project. There is some options for external I2C connections with the system configuration tab in the TAS5828M PPC3 app to assist in some register readouts and tuning.

    best regards,
    Luis

  • 0 in reply to Luis Fernandes de Pina
    Prodigy 40 points

    Hi Luis,

    I am little confused here. So, if I design my own PCB and would like to use PPC3 for PBTL configuration, how do I proceed? How would EVM help me apart from evaluation? And is it possible to use PPC3 without EVM? If yes, what is the process? Do I need to buy any recommended interface?

    Thanks
    -Mayuresh

  • 0 in reply to Mayuresh Vaidua
    Prodigy 40 points

    Strange, my request for PPC3 access was rejected with following comment : 

    This case is created for your request for Product number PUREPATHCONSOLE and it has been reviewed. Unfortunately you have provided information that is not valid for this type of request so it is denied. You may resubmit a new one, update your request form or MyTI account with details following the guide below:

    Information provided was correct and all the required fields were added. Not sure who to proceed with the development with such road block? 

  • 0 in reply to Mayuresh Vaidua
    TI__Genius 14760 points

    Hello Mayuresh,

    Is there a TI support contact in the SW rejection email to contact as I do not see approvals.

    best regards,
    Luis

  • 0
    Prodigy 40 points

    Hello Luis,

    My request for PPC3 is still in limbo! Do let me know it its possible to use TAS5828M without PPC3 in stereo mode? Or PPC3 is must have to use TAS5828.

    Thanks
    -Mayuresh

  • +1 in reply to Mayuresh Vaidua
    TI__Mastermind 42060 points

    Hi Mayuresh

       Your request should be approved today. Thank you.

  • 0 in reply to Shadow He
    Prodigy 40 points

    Hi,

    Yes, request is approved, great! . Thank you. 

    Will proceed with the initial fabrication of the AMP. 

    Regards
    -Mayuresh