This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

TAS5414B-Q1: PBTL

Intellectual 430 points

Replies: 8

Views: 85

Part Number: TAS5414B-Q1

Hi,

I am planning to use TAS5414B-Q1 in my system however, I wanted to check if I can use more than 2 channels in PBTL model as I am planning to output 150W but I wanted to check If I can parallel all 4 channels at 14.4V input voltage instead of 24V and achieve the 150W output power. Is a maximum of 2 channels allowed in Parallel? 

  • Hello Boppana,

    For 150W output power with PVDD=14.4V, can you also share the impedance information of the load/speaker?

    BR,

    Alix Wan

  • Naveesh,

    when amplifier set to 2 channels parallel, one of the channel's feedback loop is disabled, becasue two feedback loop working togehter may have some unstable behavior.  So from this point of view, 4 channels parallel is not a good way.  

    Dylan

  • In reply to Dylan Yao:

    Hi Navesh,

    I will add to Dylan's reply.  As it is possible to parallel 4 channels on the TAS5414B-Q1, but it is not recommended, not only for the feedback, but the protections and load diagnostics can be compromised and not respond correctly.  At 14.4Vdc, you would need a 1 ohm speaker to get to 150W. 

    Regards,
    Gregg Scott
    Senior Application Engineer
    Mid Power Audio Amplifiers

  • In reply to Gregg Scott:

    Thank you very much, 

    However, I have a query can I use channel 1&2 in parallel mode and output 150W and Parallel channel 3&4 in parallel and output another 150W. Can you kindly let me know if this is possible?

  • In reply to Naveesh Boppana:

    Hi Naveesh,

    According to the datasheet, the device can provide 150W at 10%THD into 2 ohms with a 24Vdc power supply when in PBTL.  This will meet your requirement.  Please note you will need to have a very good thermal management system in place for this power level.

    Regards,
    Gregg Scott
    Senior Application Engineer
    Mid Power Audio Amplifiers

  • In reply to Gregg Scott:

    Hi Gregg,

    So I can output 150W at 10%THD into 2 ohms with a 24Vdc power supply in PBTL(Channel1&2) and another 150W at 10%THD into 2 ohms with a 24Vdc power supply in PBTL(Channel3&4) total 300W output using 4 channels with 1&2, 3&4 in parallel? 

  • In reply to Naveesh Boppana:

    Yes, You understand correctly.

    Regards,
    Gregg Scott
    Senior Application Engineer
    Mid Power Audio Amplifiers

  • In reply to Gregg Scott:

    Thank you :)

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.