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TAS5630B Schematic Review

Graeme Bridge
Prodigy 30 points
Other Parts Discussed in Thread: TL7715A

Hi Guys

I have just started working with the 5630B and im looking to get my schematic reviewed beofre i move onto board layout. 

I have attached the PDF of the schematic and could appreciate if an application engineer could look it over and advise any changes.

Many thanks

Graeme1588.MAD-AMP.pdf

  • 0
    TI__Mastermind 37045 points

    Hi Graeme,

    That is the supply level, speaker load impedance, inductor spec, and intended mode of operation? Is there any difference between this and the EVM schematic?

    Thanks.

     

    reg,

    Paul.

     

  • 0 in reply to user5276421
    Prodigy 30 points

    Hi Paul,

    I took the schematic from the eval board schematic. I believe it should be set to run in Differential-Input BTL With BD Modulation Filter.

    PVDD will be 50V and impedance of the drive units will be 6Ω and 8Ω

    I have omitted the LED's for Ready,Reset, thermal etc as i dont  need these (amp will be installed in an active speaker)

    I also left the reset section as i was going to ask if this needs a reset chip or any ther circuitry rather than what looks to be a switch and transistor.

    The amp will be fed from a DSP/DAC combination from Analog Devices which has a 1.76V RMS / 4.96V p-p output

    Many thanks

    Graeme

  • 0 in reply to Graeme Bridge
    TI__Mastermind 37045 points

    Hi Graeme,

    Good job following the EVM schematic. There is no special requirement on the RESET pin just follow the DS digital IO spec for this.

    Layout is really the key to a good reliable system. Please try to copy the EVM layout. Also make sure that the inductors meet the DS spec of min 7uH under all conditions.

    reg,

    Paul.

     

  • 0 in reply to user5276421
    Prodigy 30 points

    Hi Paul

    Would the TL7715A be suitable for controlling the reset line? if not do you have a recommendation ?

    Many thanks

    Graeme