IL33035
B
RUSHLESS
DC M
OTOR
C
ONTROLLER
The IL33035 is a high performance second generation
monolithic brushless DC motor controller containing all of
the active functions required to implement a full featured
open loop, three or four phase motor control system. This
device consists of a rotor position decoder for proper
commutation sequencing, temperature compensated
reference capable of supplying sensor power, frequency
programmable sawtooth oscillator, three open collector
top drivers, and three high current totem pole bottom
drivers ideally suited for driving power MOSFETs.
Also included are protective features consisting of
undervoltage lockout, cycle-by-cycle current limiting with a
selectable time delayed latched shutdown mode, internal
thermal shutdown, and a unique fault output that can be
interfaced into microprocessor controlled systems.
Typical motor control functions include open loop speed,
forward or reverse direction, run enable, and dynamic
braking. The MC33035 is designed to operate with
electrical sensor phasings of 60°/300° or 120°/240°, and
can also efficiently control brush DC motors
F
EATURES
•
10 to 30 V Operation
• Undervoltage Lockout
• 6.25V Reference Capable of Supplying Sensor Power
• Fully Accessible Error Amplifier for Closed Loop Servo Applications
• High Current Drivers Can Control External 3-Phase MOSFET Bridge
• Cycle-By-Cycle Current Limiting
• Pinned-Out Current Sense Reference
• Internal Thermal Shutdown
• Selectable 60°/300° or 120°/240° Sensor Phasings
• Can Efficiently Control Brush DC Motors with External MOSFET H-Bridge
1
INTEGRAL [ INTEGRAL CORP. ]
