Part Number:DRV10983
I need guidance in selecting the correct 3-phase motor controller.
(Ultimately, a common low cost IC with minimal external components)
Motor Specs:
We plan to use a low cost, 3phase (3 wire /sensorless), small motor (about the size of an Oreo cookie)
It draws about 250ma through it's speed range with a max draw of 650ma if you manually stall the rotor.
It has 9 stator poles wound with a fine gauge wire.
We do not need much torque at all. We just need to start, stop & vary the speed of the motor between 50 RPM through 3,000 RPM
(With this particular "generic'ish" motor we will need to supply about 25 volts to reach 3,000 rpm)
The minimal mechanical load on the motor will remain constant.
Preliminary testing with a TI DRV11873 controller almost did the job but at speeds below 150 RPM it stalls.
Further a DRV11873 is not well suited for MCU control.
Ultimately for production, we will need to control the speed with a "garden variety" Atmel Tiny MCU.
Hopefully, to solve the stalling problem and MCU control issue we looked at the DRV10983.
It appears from the datasheet that it supports InstaSPIN.
If I understand InstaSPIN, control down to very low RPMs should be possible and "fairly" easy ?
Am I correct that pursing the DRV10983 is the right path for us ??
MOTOR:
