3 ms·
Huh? That DDS is a silly choice. For one thing, those chips are $27 a pop and only available in QFN44 and QFN64. (May have been smaller FF at some other point,
by cushychicken 3y ago
Huh? That DDS is a silly choice. For one thing, those chips are $27 a pop and only available in QFN44 and QFN64. (May have been smaller FF at some other point, but not any more.) The final BLDC driver he selected is like $1.50.
Not to mention that you can't adjust the drive phases of a DDS with I2C fast enough to be of any use for BLDC. Once you add in a sensor/feedback element, it definitely wouldn't have the latency performance you'd need for BLDC.