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TPA6304-Q1: Turn on using STANDBY pins

Masaru Oinaga
Expert 4525 points
Part Number: TPA6304-Q1


Hello, Team,

While the software in their system is still under development, customer would like to try TPA6304-Q1 without it.

  1. They tried to turn-on the device by putting the STANDBY pin to Hi, but did not see any output.
    Are there any diagnostic or other features that is required for the device to operate?

    Or, does STANDBY should not go Hi with VBAT&PVDD?
    When taken look at the sequence, I see STANDBY going Hi after other pins going Hi/Lo:
  2. Can we try the software in the TPA6304-Q1EVM and the PPC to turn-on the TPA6304-Q1 in the customer board?
    In that case, can we control TPA6304-Q1 in the customer's board via I2C signal?
    If so, which is need to be connected: SCL, SDA, as well as STB and DIAG?

If it is difficult to control/turn-on TPA6304-Q1 in either 1 or 2 above, they will wait for the software development.

Could you please help us out here?

Best Regards,
Masaru

  • +1
    TI__Mastermind 45085 points

    Masaru-san,

    1. The TPA6304 must use I2C to place the output stage into PLAY mode.  First the device must be taken out of STANDBY mode, then the I2C must be used to make any setup changes to your device, run Load Diagnostics, then it can be placed into PLAY mode.  
    2. You can use the EVM software, PPC3, to turn on the customer board.  Remove the jumpers J12 and J13.  Use one of the pins from the I2C source on each of these jumper pins.  J12 is SCL and J13 is SDA.

    Regards,
    Gregg Scott