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CCS: DRV8305 to control the BLDC motor.

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Prodigy 10 points
Other Parts Discussed in Thread: DRV8305, DRV8301, CONTROLSUITE

Tool/software: Code Composer Studio

when i test the 28035+DRV8305 to control the BLDC motor.  there are some problem to issue. 

i use the SPI configure the DRV8305 . when i choose the 3PWM model, the GHA Output is right. but when i choose 6PWM model ,the GHA Output is wrong. the Output Value is like add 24V .

and when i choose 6pwm model. if INA is low and ILA is also low,the GHA is high as 24V  the GLA is low. why the GHA  output is 24V?

  • 0
    TI__Guru** 112840 points

    Please refer to the PWM configuration in "PM_Sensorless" project in controlSUITE even though the project is for DRV8301, you need to configure the PWM of C2000 to the complementary mode enabling dead band for 6-pwm mode of DRV8305. 

    C:\ti\controlSUITE\development_kits\DRV830x-HC-C2-KIT_v105\PM_Sensorless