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BLDC motor controller selection

Daniel De Sousa
Intellectual 580 points
Other Parts Discussed in Thread: DRV8304, DRV8323R, DRV8323, DRV8353R, DRV8353, DRV8353F, DRV8353M, DRV8316, MCT8316Z, MCT8316A, MCF8316A

Hi there, we are looking for a TI BLDC solution for a 3 phase motor with the following specifications:
Max Voltage Supply: > 24V
Output RMS current > 5A
3 x current sensing

We are looking at the following:
DRV8304
DRV8323 / DRV8323R
DRV8353 / DRV8353R
DRV8353F
DRV8353M

What is the difference between DRV8353 and DRV8353F and DRV8353M. Please specify all differences.

What is the difference between DRV8304 and DRV8323 and DRV8353. Please specify all differences.

Thank you in advance! 

  • 0
    TI__Mastermind 26046 points

    Hi Daniel,

    Please clarify: max voltage supply > 24V. Is the max supply 24V, or a higher value? A minimum of 24V doesn't make sense, I think you may have meant maximum supply of 24V. 

    DRV8304 - Three phase gate driver, 40-V abs max, 3x CSAs, recommended for 12-V applications
    DRV8323 - Three phase gate driver, 60-V abs max, 3x CSAs, recommended for 12-V/24-V applications
    DRV8323R - Three phase gate driver, 60-V abs max, 3x CSAs, integrated buck regulator, recommended for 12-V/24-V applications
    DRV8353 - Three phase gate driver, 100-V abs max, 3x CSAs, split supply allowed for IC and MOSFETs, recommended for 12-V/24-V/48-V applications
    DRV8353R -     Three phase gate driver, 100-V abs max, 3x CSAs, split supply allowed for IC and MOSFETs, integrated buck regulator, recommended for 12-V/24-V/48-V applications
    DRV8353F - Functional safety certified three phase gate driver, 100-V abs max, 3x CSAs, split supply allowed for IC and MOSFETs, recommended for 12-V/24-V/48-V applications
    DRV8353M - Three phase gate driver with extended low temp (-55C instead of -40C), 100-V abs max, 3x CSAs, split supply allowed for IC and MOSFETs, recommended for 12-V/24-V/48-V applications

    If your supply is <24V maximum, you could use DRV8316, this is an integrated MOSFET driver with 3x current sensing and works up to 8-A peak current, 40-V abs max. You may also use MCT8316Z, MCT8316A, or MCF8316A; these are integrated MOSFET and control drivers so no current sensing is required since closed loop control occurs in the motor driver, and works up to 8-A peak current, 40-V abs max. 

    Thanks,
    Aaron

  • 0 in reply to Aaron Barrera
    Intellectual 580 points

    Thanks. We are currently using the DRV8316 for other BLDC drives within our system but unfortunately, it cannot handle the current needed for this app.

    When I said ">24V", I was talking about the driver requirements. Our system is a 24V Li Ion system.

    Questions:
    It says in the datasheet for the DRV8304 that it is suited for both 12 and 24V applications. Please clarify
    Besides the voltage ratings and split supply ability, are there other functional differences?
    For the F and M variants, are there functional differences between these two parts and the DRV8353? What is implied by functional safety?

    Thanks

  • 0 in reply to Daniel De Sousa
    TI__Mastermind 21500 points

    Hello Daniel,

    Thanks for the clarification on the 24V system.

    Regarding your questions:

    The suited for both 12V and 24V applications just means the voltage range that the DRV8304 can handle is suitable for applications in this range.

    DRV8353 is the only device from the other two that can perform split supply. Other than than we have different pinouts with the DRV8304 having a 40 pin package while DRV8323 and DRV8353 can either be 40 or 48 pins depending on which option is selected. Similar register configurations but different settings. The DRV8323 and DRV8353 have more options for IDRIVE settings over DRV8304. Other than that the main differences are in the voltage ratings.

    The DRV8353M is not a functional safety device it is just an extended temperature range and performance is the same so no functional difference here. The DRV8353F is the functional safety variant also has no functional difference either, but it is verified as a functional safety device so it has other supportive documentation that would be needed in some applications that require functional safety.

    Best,

    Isaac

  • 0 in reply to Isaac Lara
    Intellectual 580 points

    Great, is it possible to go forward with the DRV8323R and have the DRV8353R as a P2P compatible part for backup?

    Is it HW compatible and SW compatible?

  • 0 in reply to Daniel De Sousa
    TI__Mastermind 21500 points

    Hello Daniel,

    DRV8323R and DRV8353R are not pin to pin compatible, so if you ever need a replacement the board would need to be reworked. And they are also not SW compatible. The devices are similar but are not exactly the same, so they are not made to be direct drop in replacements.

    I hope this helps!

    Best,

    Isaac

  • 0 in reply to Isaac Lara
    Intellectual 580 points

    I see. Can you confirm whether the DRV8304S and the DRV8323S are fully HW compatible? Based on their FP, it looks like they would be...

  • 0 in reply to Daniel De Sousa
    TI__Mastermind 21500 points

    Hello Daniel,

    DRV8304S and DRV8323S are pin to pin compatible. Software is similar but not equivalent, but that is always easier to modify compared to a hardware change. For future reference a lot of parts have equivalent footprints so it is usually necessary to compare the pinouts to ensure that there is not any differences between them.

    Best,

    Isaac

  • 0 in reply to Isaac Lara
    Intellectual 580 points

    Sorry yes. I meant pinout - not FP.

    Thanks for confirming.