Hello all,
I am new to motor control and am building a sensor-less 3-phase BLDC motor controller with the DRV8301. The plan is to use 120 degrees square wave commutation in 6 PWM mode to drive 3 half bridges (similar design to Figure 7 in data sheet for typical application). I am having a hard time finding out what exactly what the DRV8301 accepts for PWM signals. I have looked at the data sheet and see Table 1 in 6 PWM Mode.
I plan to have a 2kHz switching sequence frequency and 20kHz PWM frequency (might need some tweaking). Am I right in understanding this is what the DRV8301 wants as an input? Or do the low phases need a inverse signals? Or am I completely out to lunch here?
I plan on inserting the dead time between switching through SPI with the DRV8301 setting.
