Hello,
I'm currently working with the S32K144 BLDC/PMSM Development Kit, which includes the MC34GD3000 motor driver IC. According to the application circuit of the MC34GD3000, it seems to be designed for controlling 12V BLDC motors.
However, the BLDC motor that comes with this development kit is actually a 24V motor. This raises some concerns for me:
I would really appreciate any insights or recommendations from those who have experience with this kit. Thank you!
Hello,
Operational range of the S32K144 Devkit (10-18V) is derived from both boards: DEVKIT-MOTORGD at the top and S32K144EVB board at the bottom. Even though motor of the S32K144 devkit is designed for higher voltage 24V, operation is safe and motor control capabilities of the S32K144 MCU are fully demonstrated also at lower voltage level 12V. The only difference is that the maximum no-load speed at 12V is a half of the maximum no-load speed at 24V.
It's not recommended to operate the motor beyond the rated voltage range 10-18V, because higher voltage would require more changes to be implemented, particularly on the S32K144EVB. Battery voltage (12V) supplies also S32K144EVB, where the linear voltage regulator converts the battery voltage from (12V) to 5V to supply MCU. 24V might be limiting for it. Besides that, there are also some passive components around which have been selected primarily for 12V.
It should be noted that S32K144 development kit has been primarily designed for development purposes not as reference design. S32K144 devkit helps customer at very first stage to evaluate MCU capabilities.
Find some useful links below:
https://www.nxp.com/DEVKIT-MOTORGD
https://www.nxp.com/webapp/Download?colCode=AN5426
Best regards,
Marek