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TIDA-00875: Suggestions for High Voltage Single Phase BLDC control

user4008740
Intellectual 915 points
Part Number: TIDA-00875
Other Parts Discussed in Thread: DRV8701, UCC27714, DRV8701EVM, TIDA-00778, TMS320F28027F, DRV832X, MSP-EXP430F5529LP

Dear TI Experts:

For Single Phase BLDC control, it seems that TI does not provide many reference designs.

I can only find the TIDA-00875.

For the target application: Single Phase BLDC with AC230V input and rated 330W, could you kindly guide me in the design approach?

Thanks for your reply in advance!

Wish you the best!

Tang Han

  • 0
    TI__Guru** 114905 points
    Hi Tang Han,

    Devices like the DRV8701 used in TIDA-00875 operate at 60V or less.

    If you need higher voltages, you will need to use half bridge gate drivers like the UCC27714.

    The concepts used in TIDA--00875 can be used at higher voltages.
  • 0 in reply to Rick Duncan
    Intellectual 915 points

    Dear Rick Duncan:

    Thanks for your kind and professional reply.

    1. Based on your suggestion (UCC27717), I have drawn the following circuit. Could you kindly check it for me?

    2. I add the Rshunt and found that COM pin (pin5 of UCC27717)  is connected to Vss pin (pin3 of UCC27717).  Is it correct when I add the Rshunt?

    3. Could you kindly show me how to determine the values of these resistors and capacitors? 

    4. For my target application with 230 or 220 Vac input, rated 330W, and 500~6000 rpm, can I also use MSP430 as the MCU?

    5. For the DRV8701EVM design with MSP430, can I run the program provided by TI to test my target application?

    How great you are!  I found you are the author of  TIDA-00875!!!

    ^_^

    Thanks a lot! 

    Best Wishes,

    Tang Han

  • 0 in reply to user4008740
    TI__Guru** 114905 points
    Hi Tang Han,

    The UCC27714 experts have been contacted. Expect a reply from them soon.
  • 0 in reply to Rick Duncan
    Intellectual 915 points
    Dear Rick Duncan:

    Thanks for your kind and instant reply!

    ^_^

    Wish you the best!
    Tang Han
  • 0 in reply to user4008740
    TI__Genius 13445 points
    Hi Tang Han,

    Thanks for reaching out to the High Power Drivers group, my name is Mamadou Diallo, I will help address your inquiry.

    Have you looked at TIDA-00778 below? This reference uses design uses TMS320F28027F as the MCU however.

    www.ti.com/.../tiducy7.pdf

    It is 3-phase motor drive but many of the concepts and component selection are applicable to your inquiry.

    Additionally, please find attached UCC27714 user's guide highlighting typical component values used for this device.

    www.ti.com/.../sluub02a.pdf

    The third link below discusses how to select the bootstrap components in both half-bridges to provide bias to the high-side gates.

    www.ti.com/.../slua887.pdf

    When choosing this components, ensure that all the components in upper and lower half-bridge are even matched so for example if you choose a bootstrap cap of 0.1uF on the upper boot cap, ensure the same value is on the lower boot cap as well.
    Also COM and GND are essentially the same and section 1.4.2.1.1 of the TIDA-00778 discusses how to calculate the sense resistor.

    Please let us know if you have further questions or press the green button if this helped address your inquiry.

    Regards,

    -Mamadou
  • 0 in reply to Mamadou Diallo
    Intellectual 915 points
    Dear Mamadou:

    Thanks for your instant and professional reply. I am also grateful to Rick Duncan.

    Please don't close the thread until 2019/01/14. I am afraid I hope to consult you again.

    ^_^

    Wish you the best!
    Tang Han
  • 0 in reply to user4008740
    Intellectual 915 points
    Dear Rick Duncan:

    Could I ask one more question?

    I can buy DRV8701EVM, which provides hardware design and software programs for brushed motor control by MSP430.
    But the software programs are not for single-phase brushless BLDC, right?

    On the other hand. the TIDA-00875 just provides the hardware design for single-phase brushless BLDC, but software programs not included, right?

    If 'YES' for the above questions, does TI provide any software programs for single-phase brushless BLDC control?

    Look forward to your kind reply!
    Wish you the best!
    Tang Han
  • 0 in reply to user4008740
    TI__Guru** 114905 points

    Hi Tang Han,

    You are correct.

    The software for the DRV8701EVM is not for single-phase BLDC, and TI does not provide software for the TIDA-00875 single phase BLDC control?

    TIDA-00875 demonstrated a brushed DC driver could be used in different applications.

    A quick search around the TI website did not locate any software for single phase BLDC control

    Trapezoidal Sensored 3 phase BLDC software could be modified to operate a single phase BLDC motor.
    Most sensored 3 phase rely on 3 hall sensors and commutate when a hall sensor changes
    The code could be modified to look for a change on a single hall sensor.

    TI software is usually written to interface with a GUI, and may not be optimal for your application.
    The DRV832x Software may be a good place to start. It was written for the DRV832x devices using a MSP-EXP430F5529LP

  • 0 in reply to Rick Duncan
    Intellectual 915 points
    Dear Rick Duncan:

    Thanks for you instant, detailed, and professional reply!

    I have learned a lot from you~

    Wish you the best!

    Tang Han
  • 0 in reply to user4008740
    TI__Genius 13445 points
    Hi Tang Han,

    If we have addressed your inquiries at this point, we must unfortunately close the thread :(

    However if you have further questions on this topic, you may use the "Ask a related question" tool on the top right corner for further assistance and we will gladly assist you.

    Thanks for interest in our parts.

    Regards,

    -Mamadou
  • 0 in reply to Mamadou Diallo
    Intellectual 915 points
    Dear Mamadou:
    Thanks for suggesting TIDA-00778, whose hardware design seems wonderful!
    The TIDA-00778 uses an integrated 3 phase inverter bridge SK30GD066ET.
    For my target application: Single Phase BLDC with AC230V input and rated 330W, how do you think if I directly apply the Gate Driver design in TIDA-00778 and use only two phases of SK30GD066ET to modify it for a single phase BLDC control.  Do you agree with it?  Or is there a 2 phase inverter bridge?   ^_^
    Thanks for your kindness to me!
    Wish you the best!
    Tang Han
  • 0 in reply to user4008740
    TI__Genius 13445 points
    Hi Tang Han,

    I am glad that you're enjoying the functionality of our designs.

    I am not aware of a current 2 phase inverter bridge but from a gate driver perspective, you may be able to do so as the bridge side of the design will be fairly similar if not identical.

    Please let us know if you have further questions.

    Thanks again for your interest in our designs.

    Regards,

    -Mamadou
  • 0 in reply to Mamadou Diallo
    Intellectual 915 points
    Dear Mamadou:

    Thanks for your kind reply.

    You are really professional!!!

    Cheers,

    Tang Han
  • 0 in reply to Mamadou Diallo
    Intellectual 915 points
    Dear Mamadou:

    I appreciate your kind reply and help so much~

    You are really professional in motor control!

    Best Regards,

    Tang Han