Order this document by MC33035/D
MC33035
Brushless DC
Motor Controller
The MC33035 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.
BRUSHLESS DC
MOTOR CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
•
•
•
•
•
•
•
•
•
•
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 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
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
(SO–24L)
24
1
PIN CONNECTIONS
Top Drive
Output
B
T
1
A
T
2
24 C
T
23 Brake
22 60°/120° Select
21 A
B
20 B
B
19 C
B
18 V
C
17 V
CC
16 Gnd
15
Current Sense
Inverting Input
Bottom
Drive
Outputs
Fwd/Rev
S
A
Sensor
Inputs
S
B
S
C
Output Enable
3
4
5
6
7
8
9
ORDERING INFORMATION
Device
MC33035DW
MC33035P
T
A
= – 40° to + 85°C
Operating
Temperature Range
Package
SO–24L
Plastic DIP
Reference Output
Current Sense
Noninverting Input
Oscillator 10
Error Amp
11
Noninverting Input
Error Amp
Inverting Input 12
(Top View)
14 Fault Output
13
Error Amp Out/
PWM Input
©
Motorola, Inc. 1996
Rev 2
MOTOROLA ANALOG IC DEVICE DATA
1
MOTOROLA [ MOTOROLA, INC ]
