Another option is to look at the DRV8308. This device has speed control logic built in and simply requires one PWM/CLK "timer" to determine the speed. This device only supports hall sensored solutions though.
What is the meaning of this statement?
(2) During states where the phase is driven with a PWM signal, using asynchronous rectification, the LS gate is held off (L); using synchronous rectification, the LS gate is driven with the inverse of the HS…
Hi Eray,
For gate drivers, have you looked at the LM5107? You may need additional circuitry to invert the signal.
Also, have you investigated using the DRV8307 or DRV8308? Depending on the voltage range this may meet your needs.
Stephen, I think I understand what you're describing. Are you saying that in PWM mode, if the commanded duty cycle is small (10%), the motor doesn't turn well and the DRV8308 detects a fault?
The DRV8308 isn't designed to turn motors at around zero…
this value not working with the motor coming with EVM,
when i received my EVM , i have conect the file and i follow the instruction of DRV8308 and it work perfectly
now after i program the EVM , the default value different from the first value and motor…
Other Parts Discussed in Thread: DRV8308 , DRV10975 Hello Team,
Please allow me to ask you the motor rotating direction using DRV10975. I am understanding that DIR pin will set the motor direction, however, there were no commutation timing chart for…
Hi Jay, what if you try bringing ENABLE inactive after braking? Or with the DRV8308, set BRKMOD=1, and just toggle ENABLE to brake? Maybe that can help allow you to change direction quickly.
Thanks for sharing the video; it is interesting.
Best regards…
In order for the phase drive to align with the back-EMF, the Hall position versis stator winding is important. You can imagine that if the phase winding is energized right when the Hall signal changes, the pole versus winding position must be correct…
