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TAS6424E-Q1: TAS6424EQDKQRQ1

Roy Chan
Expert 3265 points
Part Number: TAS6424E-Q1

Hi Expert:

    May I know do we have Power consumption & thermal data with the following conditions of TAS6424E-Q1 ? 

Conditions:

1. PVDD=VBAT=12V .

2. 4channel BTL mode for 2-ohm speaker. 

3. Max power :45W for each channel , Total =4channel. 

thank you 

  • 0
    TI__Mastermind 40705 points

    Roy,

    First of all, you will have difficulty reaching 45W with a 12V power supply.  A typically car voltage while running is 14.4Vdc and you will reach the power values you state.  You can determine the power dissipation of the graphs in the datasheet.  The power level is 4 x 45W or 180W.  Graph 7-9, 7-10, and 7-11 have the data you require.  For example, the power dissipation at 180w at 2 ohms is approximately 37W. So the maximum power consumed is 180W +35W= 215W.

    Regards,
    Gregg Scott

  • 0 in reply to Gregg Scott
    TI__Expert 3265 points

    Hi Scott:

       Appreciate your explanation , it's very clear, thank you  

    I'm study thermal modeling of the part would like to training customers but not clearly understanding , can you give thermal modeling example on this power dissipation conditions ?

    thank you very much

  • 0 in reply to Roy Chan
    TI__Mastermind 42330 points

    Hi Roy

       We can provide simplified model to our customer, but can't give the model that contains any detail inside structures. It's highly confidential. Will the simplified model suit your need?

  • 0 in reply to Shadow He
    TI__Expert 3265 points

    Hi Shadow:

      Sure, can you give the simplified model example for the 45Wx4 application ?  thank you very much , 

  • +1 in reply to Roy Chan
    TI__Mastermind 42330 points

    Hi Roy

      I'll send the model to you trough e-mail. The thermal model doesn't contain any electrical parameter. Our customer can put our device model in their simulation project, and can type in any power dissipation value they needed. 

  • 0 in reply to Shadow He
    TI__Expert 3265 points

    Hi Shadow:

       I already provide calculation example to customer & will provide the mode to customer , thank you