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TAS5751M: PVDD Capacitance mono amp

Alan Hoehn
Intellectual 460 points
Part Number: TAS5751M

Hello,  I am using a two 390UF / 35V caps on the PVDD.  The design is close to the reference design for the TAS5751MDCAR being used as a mono amp.  We are having a difficult time sourcing that value capacitor.  Could the two caps be substituted with a 470UF/35V and have no impact on functionality of the TAS5751MDCAR?  

  • 0
    TI__Mastermind 31900 points

    Hi Alan

       It's better to have two Aluminum Cap, put at each side of the PVDD, and close to the pin. It will help to the THD performance. If 390uF is hard to find, use 330uF is also fine. If your PCB size is really limited and can't put two Aluminum Cap, put the one cap at the middle point, and try to close to both of the PVDD pins.