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DRV8317: Sensored FOC control, DRV8316C or DRV8317?

Daan Boesten
Prodigy 100 points
Part Number: DRV8317
Other Parts Discussed in Thread: DRV8316C, DRV8313

Hi all,

For the sensored FOC control of a 12V 2A BLDC motor with Hall sensors, I am currently evaluating the DRV8313 chip. The chip is controlled by an STM32 MCU that drives the PWM signals and interprets the Hall sensors. Unfortunately, the DRV8313 lacks current sensing capabilities and 6x PWM, something highly desirable. Looking through TI's current portfolio, the DRV8316C and DRV8317 seem to meet these requirements.

However, other than a difference in operating voltage and peak current, I cannot find much difference between the two chips. I see that the 8316C is labeled "BLDC Drivers," while the 8317 is labeled "Integrated control BLDC drivers." Can anyone explain the differences between the two in the case of our application?

Thank you,
Daan

  • 0
    TI__Mastermind 18916 points

    Hi Daan, 

    Our team member is out of office, but we'll aim to get you an updated reply on this e2e by the end of this week 

    Best Regards, 
    Andrew 

  • 0
    TI__Mastermind 20380 points

    Hi Daan,

     

    The DRV8317 is not an integrated control BLDC driver rather it is an integrated FET driver like the DRV816C, it was mislabeled on TI.com apologies for the confusion.

     

    Aside from the DRV8317 having a lower operating voltage and peak current than the DRV8316C, the RDS(ON) (HS + LS) at 25°C is 130-mΩ for the DRV8317and 95-mΩ at 25°C for the DRV8316C which will lead to the DRV8317 producing more heat than the DRV8316C at higher currents. 

     

    Best Regards,

    Joshua