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Encoder support for DRV8301-69M-KIT

Adeeb Ahmed
Prodigy 20 points

Other Parts Discussed in Thread: MOTORWARE, CONTROLSUITE, DRV8301, TMDSCNCD28069ISO, LAUNCHXL-F28069M, BOOSTXL-DRV8301, BOOSTXL-DRV8305EVM

Hello,

I’m planning to use DVR8301-69M kit  (www.ti.com/.../drv8301-69m-kit)  for controlling my PMSM.  But I’ll be using my own sensored motor control algorithm and probably will not be using the InstaSPIN BLDC GUI. My question is –

i)        Is it possible to use the kit but use regular vector control using optical encoder (with index pulse) for position sensing?

ii)        I couldn’t find any schematic for the 69M kit. Is there any available schematic of the board? My primary concern is the accessibility of ADC channels and QEP pins from the control board. 

Regards

 

Adeeb

 

 

 

  • 0
    TI__Guru** 119680 points

    I) yes. in fact, the kit you have supports InstaSPIN-MOTION which is primarily an encoder based velocity and position control solution. You can use MotorWare and proj_lab12 and 13 in InstaSPIN-MOTION focus on sensored control.

    ii) you will need controlSUITE installed and then the DRV8301 EVM schematics are at

    C:\ti\controlSUITE\development_kits\DRV830x-HC-C2-KIT_v105\~DRV830x-HC-EVM-HWdevPkg\DRV830x_RevD_HWDevPKG

    and the 69MISO controlCARD schematics are at

    C:\ti\controlSUITE\development_kits\~controlCARDs\TMDSCNCD28069ISO_v1_1\R0_4

    Do you really need the 40A of this board?  If not, a cheaper (and better) option is to use

    LAUNCHXL-F28069M

    and then either

    BOOSTXL-DRV8301 24V/10A

    BOOSTXL-DRV8305EVM 42V/15A

    you can even use 2 of these inverters on each LaunchPad

    these combinations are also supported in MotorWare for InstaSPIN-MOTION

    If you want an example in controlSUITE for sensored control for Low Voltage I recommend

    C:\ti\controlSUITE\development_kits\TIDM-SERVO-LAUNCHXS

    which uses LAUNCHXL-F28377S and either of the BOOSTXL-DRV mentioned above

  • 0 in reply to ChrisClearman
    Prodigy 20 points

    Thanks a lot Chris. Yes I actually need that high current. We are developing a low speed high torque motor and initial plan is to use low voltage battery to drive it.