DRV8323: Block BLDC Motor using DRV8323 in 1XPWM mode

Abhijeet Chahal

Part Number: DRV8323

I am operating a BLDC motor using DRV8323 motor driver in 1 X PWM mode. After my motor stops, it remains free and can be moved by external mechanical force. But I want my motor to get hard locked/jammed when it stops. I tried doing this using brake bit in driver control register but it is for stopping the motor not for locking or blocking it.
If I could get a help here.
Thanks in advance.

9 months ago

0 Yara Al Shami 9 months ago

TI__Expert 8735 points

Hi Abhijeet,

We have a good FAQ that covers the types of motor stop options:

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1212192/faq-sensorless-bldc-trap-and-field-oriented-control-foc-motor-stop-options

Active Spin down may be what you are looking to implement

Regards,

Yara

0 Abhijeet Chahal 9 months ago in reply to Yara Al Shami

Prodigy 20 points

Thanks for your reply but the motor driver in the link shared by you is different whereas I am using DRV8323. So it didn't help me to block my bldc motor.

Can we do something to hard lock or jam the bldc motor using drv8323?

0 Yara Al Shami 9 months ago in reply to Abhijeet Chahal

TI__Expert 8735 points

Hi Abhijeet,

I'll have to consult my team and see what options we have for DRV8323

Regards,

Yara

0 Abhijeet Chahal 9 months ago in reply to Yara Al Shami

Prodigy 20 points

Thanks Yara.
Will be waiting for some solution

0 Yara Al Shami 9 months ago in reply to Abhijeet Chahal

TI__Expert 8735 points

Hi Abhijeet,

It looks like you already have a thread open regarding this question.

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1331032/drv8323-hard-lock-jam-bldc-at-0-speed-motor-using-drv8323

I'm closing this thread to eliminate duplicate threads.

Regards,

Yara

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DRV8323: Block BLDC Motor using DRV8323 in 1XPWM mode