资 源 简 介
The MC33035 is a high performance second generaTIon monolithicbrushless DC motor controller containing all of the acTIve funcTIonsrequired to implement a full featured open loop, three or four phasemotor control system. This device consists of a rotor posiTIon decoderfor proper commutation sequencing, temperature compensatedreference capable of supplying sensor power, frequencyprogrammable sawtooth oscillator, three open collector top drivers,and three high current totem pole bottom drivers ideally suited fordriving power MOSFETs.Also included are protective features consisting of undervoltagelockout, cycle−by−cycle current limiting with a selectable timedelayed latched shutdown mode, internal thermal shutdown, and aunique fault output that can be interfaced into microprocessorcontrolled systems.Typical motor control functions include open loop speed, forward orreverse direction, run enable, and dynamic braking. The MC33035 isdesigned to operate with electrical sensor phasings of 60°/300° or120°/240°, and can also efficiently control brush DC motors.
