Brushless DC Motor Controller
The MC33033 is a high performance second generation, limited feature, monolithic brushless dc motor controller which has evolved from ON Semiconductorâs full featured MC33034 and MC33035 controllers. It contains all of the active functions required for the implementation of open loop, three or four phase motor control. The device consists of a rotor position decoder for proper commutation sequencing, temperature compensated reference capable of supplying sensor power, frequency programmable sawtooth oscillator, fully accessible error amplifier, pulse width modulator comparator, three open collector top drivers, and three high current totem pole bottom drivers ideally suited for driving power MOSFETs. Unlike its predecessors, it does not feature separate drive circuit supply and ground pins, brake input, or fault output signal.
Features
⢠10 to 30 V Operation
⢠Undervoltage Lockout
⢠6.25 V Reference Capable of Supplying Sensor Power
⢠Fully Accessible Error Amplifier for Closed Loop Servo Applications
⢠High Current Drivers Can Control External 3âPhase MOSFET Bridge
⢠CycleâByâCycle Current Limiting
⢠Internal Thermal Shutdown
⢠Selectable 60°/300°or 120°/240°Sensor Phasings
⢠Also Efficiently Control Brush DC Motors with External MOSFET HâBridge
⢠NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AECâQ100
Qualified and PPAP Capable
⢠PbâFree Packages are Available
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