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TAS5622A: TAS5622A or

Andre Strul
Expert 1330 points
Part Number: TAS5622A
Other Parts Discussed in Thread: TAS5624A, , TAS5558

We are looking at TAS5622a or TAS5624A in PBTL configuration but we don't have the THD+N graph for 8Ohm...can you please share it ?

  • 0
    TI__Guru 62390 points

    Andre,

    Operation in PBTL with 8 ohm load will be very similar to the BTL performance. The only difference would be that you are using more inductors for the same power level as BTL and therefore you might see some small differences due to inductor. 

    Could you explain the need for 8 ohms in PBTL mode? Usually PBTL is used for lower ohm loads where we need more current. Since PBTL doesn't give you any more output power than BTL for the 8 ohm case, it's curious why you would not use BTL and have twice the channels available. 

    Regards,

    -Adam

  • 0 in reply to Adam Sidelsky
    Expert 1330 points

    hi Adam and thank you for the reply.

    see comments form engineers here:

    we want to use PBTL (dual mono) since the power supply becomes more manageable (22v instead of 32V). But from what we understand , BTL or PBTL will give you the same power in 8Ohm ? Usually the power in PBTL is increasing by almost 2x

    Regards and thanks for your efforts.

  • 0 in reply to Andre Strul
    TI__Guru 62390 points
    Andre,

    Power in PBTL is increased over BTL because twice the current is available. This is relevant for lower ohm loads. With a higher ohm load such as that which the customer is using, they don't need the current provided by PBTL.

    What power level is the customer trying to reach at 8 ohms?

    Regards,

    -Adam
  • 0 in reply to Adam Sidelsky
    Expert 1330 points

    hello Adam,

    see reply here:

    75W at 1% Thd+n

    regards

    Andre

  • 0 in reply to Andre Strul
    Expert 1330 points
    Adam,

    on another note... Concerning the TAS5558
    can you please assist with this:

    we require the Linux drivers. Are they available anywhere?

    we also downlaoded purepath...
    But confusion is: they have 3 purepath softwares (console 3, console 2 & console 1) and TAS5558 is not list in any of these 3 consoles.

    Can you please get information on which purepath console software to be used for TAS5558 chip.

    thank you again
    Andre
  • 0 in reply to Andre Strul
    TI__Guru 62390 points

    Andre,

    PPC 1.16 is the correct one. I can give you access to it if you don't have it. Please send me an email at adamsidelsky(at)ti(dot)com.

    Regards,

    -Adam