Hi there,
I'm currently using the DRV10983 Motor Driver to control a Maxon motor EC flat 12VDC wihtout Hall sensor.
The motor is used with a small impeller ( the assembly is nothing else than a fan ) .
While the motor driver is acting accordingly to expectations at first, there seem to be a problem with noise in the I2c communications at a certain point.The Problem that occurs is that at some point when the motor reaches a certain speed, the I2c communication becomes disrupted.I saw that problem both with a connected microcontroller ( STM8) and with the USB2ANY device joined into the evaluation packages. With the Microcontroller test, i operated the bus at 100KHz and i tried to reduce the i2c bus wire length(~7cm), shield the bus, and reduce the frequency to 50KHz, but it didn't show much improvement.
I have here to run a few more tests, but at first it seemed that the data line was kept low at all time, as soon as i reached a certain operation speed with the motor. Tried several workaround to reset the bus, but nothing seemed to work.
Is there here a known issue that might cause the I2C communication to get lost? Might there be a workaround or am i just missusing/missunderstanding the motor driver at some point?
Also, i find the product very nice and compact, but some would think that the I2C communication description in the datssheet is lacking a bit information about the configuration of the bus on the master side ( for example min and max bus frequency... at least i havnt seen it in the datasheet) and the read and write communication protocol specificities for that device.
Thanks,
Eric