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DRV8353: DRV8353SRTAT

Mert Tuna
Prodigy 35 points
Part Number: DRV8353
Other Parts Discussed in Thread: MSP430F5132,

Tool/software:

Hi,

I am currently working on building a motor controller to drive 72V 3kW BLDC motor, I am following TIDA 00774 reference design for my goal.and considering to use DRV8353SRTAT (as it can drive up to 102V) component to drive MOSFETs. I want to ask several things about the component and general design of a motor controller.

1. Is it possible to use INHA, INLA, ... pins by just connecting to the MCU (MSP430F5132) without connecting them to HALL sensors. (because the competition that we are currently preparing for does not allow us to use automatic HALL commutation, as it will not counted as domestic product). 

2. Do you suggest using only 6 MOSFETs (IPB044N15N5), or should I do MOSFET paralleling?

3. Can I use parallel MOSFETs with this smart gate driver (24 pieces of IRFP260-N)? Should I use external components (resistors, capacitors) for each of them if I ve done Mosfet parallelling? (Because the video about DRV8353 tells that it stores external components up to 24). 

Please inform me on my design, what shouldn't I miss out, what specifically I should change to fabricate a controller that will work properly for my BLDC motor. I am also thankful that you share reference designs and documents like "Best Practices for Board Layout of Motor Drivers", and "System Design Considerations for High-Power Motor Driver Applications". 

I have created schematics, but I have concerns over it, that's why I can start for PCB design.

Regards,

Mert

Koç University 

Turkey

  • +1
    TI__Genius 9261 points

    Hi Mert, 

    Thank you for reaching out! 

    I apologize for the delay as we just had a US holiday at the start of the week. 

    Mert Tuna said:

    1. Is it possible to use INHA, INLA, ... pins by just connecting to the MCU (MSP430F5132) without connecting them to HALL sensors. (because the competition that we are currently preparing for does not allow us to use automatic HALL commutation, as it will not counted as domestic product). 

    Yes, the inputs can be connected directly to the MCU outputs, and also do not require the Hall sensors if using a Field-Oriented-Control (FOC) commutation method. 

    Mert Tuna said:
    2. Do you suggest using only 6 MOSFETs (IPB044N15N5), or should I do MOSFET paralleling?

    If the maximum current requirement is high then a parallel MOSFET configuration (12 FETs) may be suitable, but 6 should also be sufficient. 

    Mert Tuna said:
    3. Can I use parallel MOSFETs with this smart gate driver (24 pieces of IRFP260-N)? Should I use external components (resistors, capacitors) for each of them if I ve done Mosfet parallelling? (Because the video about DRV8353 tells that it stores external components up to 24). 

    I'm a little confused regarding this question and the use of 24 of the IRFP260-N? You can implement external components (resistors and capacitors for filtering/snubbing if necessary) but I would caution against using too many external components without an initial analysis/reason for each depending on the application.

    I can also help review your schematics when ready to better confirm your design if that's acceptable. 

    Please let me know if you have any further questions, comments, or concerns!

    Best Regards,

    -Joshua

  • 0 in reply to Joshua Maize
    Prodigy 35 points

    Hi Joshua,

    Thanks for your reply. I have finished my schematics. Where I can send you the related documents so you can confirm the design? Thanks in advance.

    Mert