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TAS5717: Schematic Review Request

Nicky Lim
Genius 3195 points
Part Number: TAS5717

Hello,

I make the TAS5717 circuit as attached.

Could you review it and let me get the result?

Regards,

Nicky

TAS5717_Sch.pdf

  • 0
    TI__Expert 6985 points
    Hello Nicky! Thanks for your message! Alex can take a look at this for you. Thanks, Jeff
  • 0
    TI__Mastermind 25845 points

    Hi Nicky,

    Overall looks good. For your 6-bit voltage translator I noticed the following in the datasheet

    1) "To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor" -- this might be something to consider.

    2) "If pull up or pull down resistors are needed, the resistor value must be over 50 kΩ." -- you have a 10K pull-up on PDN


    In the boost circuit:

    3) The application schematic has 22uF capacitors from Vout to GND next to the device before the feedback resistors. I couldn't tell if you had a reason for leaving those caps out.

    4) ILIM peak current limit is set at 3.4A whereas over current on the TAS5717 is 4.5A. This may limit your output power. I'd double check that your boost converter will output the desired power without exceeding the 3.4A current limit.


    Regards,

    Alex