Hello dear e2e-Community,
We are planning a motor control project, and for the first steps, we want to use the DRV8301-69M-KIT, where a DRV8301 is applied as motor driver.
Now, one very important functionality is the direct control of the mosfets for tests and measurements. I need to be able to set a specific combination, for example:
Phase A, top -> high, or ON
Phase A, bot -> low, or OFF
Phase B, top -> low, or OFF
Phase B, bot -> high, or ON
Phase C, top -> low, or OFF
Phase C, bot -> high, or ON
Then, I want to perform some measurements with the motor over some seconds, or even minutes, and switch to another mosfet-combination, and so on.
Am I right that this will be difficult with the DRV8301 driver because of the bootstrap circuit? Is it even possible?
And the next step would be the block commutation without PWM and without any current control, just switching the mosfets as the hall sensors dictate. At low speeds, this would be nearly the same as the above, and it should also be difficult with a normal bootstrap circuit.
And what is the maximum and minimum duty cycle with the DRV8301-driver?
What do you say?
Thank you for your help!
Best regards,
Philipp L.