DRV8312: How to drive sensored BLDC with DRV8312-C2-KIT

Sophia Yao

Part Number: DRV8312

Hi team,

My customer want to use DRV8312-C2-KIT to drive their sensored BLDC. The voltage of customer's motor is 12V and its speed is 20000 rpm. So I can't drive the motor with GUI. I tried to run "BLDC_sensored" program with CCS. But the default PWM frequency produced by c2000 is 50Hz. It is too low for the application. So I need your support to locate the right sentences for PWM frequency and duty cycle in above mentioned program. Or can you provide me a method to drive the customer motor. It is an emergency case, so I am looking forward your reply. Thanks very much.

best regards,

Sophia Yao

over 4 years ago

0 Adam Sidelsky over 4 years ago

TI__Guru 61280 points

Sophia,

The EVM does not run at 50Hz, this may be some startup frequency or similar.

Did you use the User Guide located here: www.ti.com/.../sprabn7.pdf

Did the process fail at some step?

Regards,

-Adam

0 Sophia Yao over 4 years ago in reply to Adam Sidelsky

TI__Prodigy 701 points

Hi Adam,

Because the customer want to use hall sensor for their BLDC motor. I can't use our InstaSPIN GUI. I run the "BLDC_sensored" program with CCS and operate DRV8312-C2-KIT EVM based on “DRV8312-C2-KIT” How to Run Guide". Do you have any idea how to use DRV8312 EVM to drive the sensored_BLDC up to 20000 rpm? Thanks very much.