Archive for 2nd March 2014

Testing of Two Three-Phase BLDC Motor Drivers

I was doing a project that needed a driver for hard disk spindle motors. While I could use a microcontroller to generate the required driving waveform sequence, keeping the waveform in sync with the motor rotation is actually quite tricky especially at higher rotation speeds. To ensure the correct timing sequence, a back-EMF controller is required for these sensorless three-phase BLDC motors. Continue reading ‘Testing of Two Three-Phase BLDC Motor Drivers’ »