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TIVA MCU based BLDC motor driver solution.

utpal kumar
Expert 2340 points


Dear All,

Please suggest be a TIVA  MCU based BLDC motor driver solution.

Please find below requirements.

BLDC DRIVE REQUIREMENT

I/P VOLTAGE 50 TO 90V DC
MOTOR VOLTAGE    48VDC
MOTOR CURRENT  10A CONTINUOUS  /20A PEAK

CURRENT LIMIT SETTABLE THROUGH SOFTWARE

OPTION FOR HALL AS WELL AS ENCODER FEEDBACK(SLAVE MODE)

PROTECTION: [1] OVER VOLTAGE
        [2] UNDER VOLTAGE
        [3] OVER CURRENT
        [4] SHORT CIRCUIT
        [5] GROUND FAULT(HIGH SIDE CURRENT SENSING)
       

PROCESSOR   CORTEX-M4  (NO STELLARIS)

Looking forward for your valuable feedback.

Thanks & Regards :-

utpal

  • 0
    Guru 47900 points

    Our small group past developed such a BLDC motor control design w/LX4F231H5 device.  (64 pin, Cortex M4)

    You should be able to (still) find/read/review the past Stellaris BLDC RDK kit which used a larger pin Cortex M3.  While outside your "spec" - the points & strategy therein are fully applicable to your present objective.  User Guide for that past kit was very detailed/well-written - we'd bet you'd find it beneficial.

    Fault handling (over voltage/current) etc. (that past RDK) was too drastic/draconian for our tastes.  (i.e. even a single "transient" event "shuts-down" the controller - which often is way too harsh)  And - it fails to provide a current/torque "limiting" so often deemed helpful or even necessary.

    Power stage in that past RDK was not up to your voltage/current requirements - you'll have to survey the many new power devices which have arrived since that past RDK's introduction...

    Note that the RDK runs w/a supplied GUI (tieing you to an adjacent PC) or a simpler version.  (Basic BLDC)  We adopted the Basic version - and significantly extended & enhanced to our needs.  (thus we're "freed" from any PC attachment)  In usage - the need for a character or small graphic display became most evident.  We chose one of our firm's existing SPI input - small graphic displays - to monitor: Motor Speed, Motor Current, Torque/Current setting, power FET temperature, and key board voltages.  (among others)

    Believe this sufficient to, "Get you on your way..."