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DRV2510Q1EVM: Powering the board

Naser S.
Genius 11605 points
Part Number: DRV2510Q1EVM
Other Parts Discussed in Thread: DRV2511-Q1, DRV2510-Q1

We have a customer following the user guide  www.ti.com/.../slou449.pdf

( page 4 ) 2.1 Powering the board  the customer states that the following is not happening:
To power the DRV2510Q1, external power must be supplied through header, J5. The driver will power on when the external power supply provides at least 4.5 V. Thanks.

  • 0
    TI__Guru** 108765 points
    Hi Naser,

    What specifically is not happening? Do you have more details?
    Is customer providing 4.5V and the device is not powering up? What voltage do they need to supply in order to let the device to power up?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 30 points
    I powered the board with USB and saw the 3v3 LED, then I supplied 7V with a 0.5A current limit, on the J5 connector, and the FAULT LED immediately turned ON.

    I connected to the console and was able to talk to the board. I kept the J7 supply connected and began troubleshooting the signal paths. At some point the FAULT LED was no longer ON, but it seems like there is a defect with the output side of the board. I can see a 1kHz square wave on both pins of J9, but nothing on J7. I wouldn't think that 0.5A draw would kill the chip so maybe there was a defect? I was hoping it was a read error by the micro, pre-connection but that does not explain the chip being inactive now.

    As an anecdote, it seems like U6 is under-loaded. It had a 200 mVpp sawtooth riding on top of the 3v3 power which was being passed through the micro's DIO. Adding a 50 Ohm load stabilized it. Is that typical as well?
  • 0 in reply to Ken Orkis
    TI__Guru** 108765 points
    Hi Ken,

    The current consumption of the device could go above 500mA, have you tried to set a higher current limit of the supply voltage?
    Regarding the input signals to the device. Could you confirm what firmware is installed on your board?
    The latest firmware version is 1.5.4, you can download it from the EVM folder. On previous versions of the firmware there were issues that input signals were in phase so they were eliminated at the differential input of DRV2511-Q1.
    Regarding the ripple on 3V3, it is expected. Thanks for the advice, though.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 30 points

    I've updated the firmware to v1.5 and still do not see anything on the J7 connector.

  • 0 in reply to Ken Orkis
    TI__Guru** 108765 points
    Ken,

    I assume you're using the GUI to send the command and input signal to the device, right?
    When you send the input signal to the device, are D3, D4 and D5 LEDs powered on?
    In addition, if input is PWM sent from MSP430 to DRV2511-Q1, J6 and J9 should be removed (open) and J8 and J10 should be shorted on positions 1-2. Is this your setup?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 30 points
    That is my setup, the LEDs are as described, I am using the GUI.
  • 0 in reply to Ken Orkis
    TI__Guru** 108765 points
    Ken,

    DRV2510-Q1 has Class-D output, if there is no signal present at the output (J7) it would mean that the device is not operating. You're not using OUTA and OUTB test-points, correct?
    Although if J5 is properly powered and D4 and D5 LEDs are ON, it would mean that the device is operating.
    Is there a chance that you could inspect the voltage on pin 2 (EN) of the DRV2510-Q1? It should be at 3V3 to enable the device.
    Also pin 8 (STDBY) should be at 0V.
    The GUI controls should be Enable = ON, HiZ = OFF.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators