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TPA3128D2: PSpice model

Part Number: TPA3128D2

Hello! 

I installed the PSpice for TI. I would like to simulate TPA3128D2, but I can't find it, although on the product's page it is mentioned PSpice. 

My real requirements are: 

3x mono amplifiers, 8-10W on 8 Ohm speakers;
1x mono amplifier, 20W on 4 Ohm speaker; 
All these should work on 12V.

If you could suggest any other chip or design, I'll appreciate it. 

Best regards,
Svetoslav Valkov

  • Hi Svetoslav,

    I have a few follow up questions:

    - I'm assuming you want to also have an analog input device?

    - Would the power levels you are wanting be for 1% THD or 10% THD?

    - Can the device be a pad-up or needs to be pad-down? (need a heatsink or pcb is the heatsink)

    - Is the only reason why you might not go with TPA3128D2 is you can't find a Pspice model?

    Best Regards,

    Robert Clifton

  • Hi Robert!

    Yes, the input device is the speakers out (or line out) of a PC. We are already manufacturing an amplifier based on TPA3128D2 (actually 2 pcs of it). Now I have to design an amplifier with 4 mono outputs (L and R will be combined before the amplifier). Three outputs have to be 8-10W on 8Ohm and the 4-th -> 20W on 4Ohm. So, my idea was to simulate it, because the power supply requirement now is 12V. Of course, I can perform some testing on a real amplifier, but it is much more time consuming.

    The THD is not an issue, I presume. Nor is the heatsink. The sounds played are sporadic.

    I preffer to use the same chip, because of the warehouse stock. 

    Best regards,
    Svetoslav

  • Hi Svetoslav,

    Thanks for clarifying. I don't believe we have a pspice model for that device. In fact a lot of our devices don't have spice models due to their complex nature. Also a lot of customers tend to test on the real amplifier to verify sound quality.

    Regards,

    Robert Clifton