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DRV10983: DRV10983

Dinar Prabhu
Intellectual 460 points
Part Number: DRV10983
Other Parts Discussed in Thread: TIDA-00652, UCC28180

Hello

I have built power supply  from the reference design no TIDA-00652 ( gives 23.95Vlot) and trying to to interface STM8 micro-controller(Dev board with STM8S103f3) with DRV10983, the Micro-controller turns on and loops program ( LED blink)  with my setup, but it does not accept data from the I.R sensor,but when the mricocontroller is connected to computer via a serial debugger , the system works fine and accepts data from I.R. receiver and send commands to DRV over I2C and controls it perfectly,   but when the ground is disconnected from the computer the controller does not accept data from I.R receiver. I loaded the DRV10983 EEPROM to confirm that is turns on and runs the motor,Runtian motor  supplied DRV10983 EVM.

Is there any additional filtering capacitor need to filter noise?

Thanks and Regards

Dinar

  • 0
    TI__Mastermind 18900 points

    Hello Dinar,

    From what I can tell, under certain circumstances, the STM8 MCU can communicate with the DRV10983 device successfully, load in the EEPROM, and spin the motor just fine.

    When reviewing your troubleshooting steps, it appears the DRV10983 is independent of the issues you are facing. This means, you could remove the DRV10983 from the system, and your issue will not be solved. Unfortunately, The STM8 MCU and IR sensor are not Texas Instruments parts, and therefore, Texas Instruments cannot support any issues that are occuring between them.

    With that said, there has to be a reason the serial debugger is making the system work. Try to understand how the serial debugger is interfacing with the MCU, and see how this performance can be replicated in your system.

    I apologize for the inconvience. Good luck in your troubleshooting.

    Best,

    -Cole

  • 0 in reply to Cole Macias
    Intellectual 460 points

    Hi Cole

    The issue is not DRV10983, it seam only when the reference design( TIDA-00652) buck converter power supply connected the system behaves this way, I tried using another fly-back design power supply and the circuit works with out any external connection.

    Thanks

    Dinar

  • 0 in reply to Dinar Prabhu
    TI__Mastermind 18900 points

    Hey Dinar,

    Sorry about the misunderstanding. Let's go over what the system is, please correct me if I'm wrong:

    • There is 90-265VAC coming into a Buck PFC circuit (based on TIDA-00652 using UCC28180) that outputs about 24VDC
      • The 24VDC powers the DRV10983
      • The DRV10983 V3P3 output powers the Dev board with STM8S103f3
      • The Dev board with STM8S103f3 is connected to an IR Sensor
    • You can disconnect the TIDA Buck PFC circuit and connect the DRV10983, STM8S103f3, and IR sensor to a different supply and the system works
    • Also, the STM8S103f3 and IR sensor can be powered externally (instead of using the DRV10983) and the STM8S103f3 can talk with the DRV10983
      • I'm not sure what is powering the DRV10983 in this case

    If these assumptions are right, then we've narrowed down to the DRV10983 or TIDA Buck PFC circuit.

    Best,

    -Cole

  • 0 in reply to Cole Macias
    Intellectual 460 points

    Hi Cole

    I am attaching block diagram of the set up.

    The 3.3V is from VREG of the DRV10983, the attached controller , LED and I.R sensor in total consume 60 mA, which is below the 100mA the VREG can provide.

    I have MSP4302274 dev boards as well, I replaced the stm8s with MSP430 and get similar results.

    When the Earth of the fly-back smps is disconnected , the circuit behaves like sames as on buck converter (losses data from I.R.).

    Both the micro-controllers are programmed with similar code, continues blinking LED to show that the it is not crashing or resetting, when I.R. data received to acknowledge the interrupt the led switching Off for 1 sec , when ever  the micro-controller acknowledges the I.R., there is communication with the DRV10983.

    I will try to run the controller and I.R. of battery pack and combine the GND to RET of DRV board and check if that works  for I.R.

    Thanks and Regards

    Dinar

  • 0 in reply to Dinar Prabhu
    TI__Mastermind 31580 points

    Hi Dinar,

    I suggest testing the TIDA-00652 as a stand alone power supply first to ensure there are no issues with its output voltage. It would also help if you could post waveforms of the 24V output from the TIDA-00652 when the system is not working correctly.

    Thanks

    Peter

  • 0 in reply to Cole Macias
    Intellectual 460 points

    Hello

    I have found a solution and the system works as desired.

    Thank you Cole and Peter for your quick response.

    Thanks And Regards

    Dinar