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Motorola Electronic Components Datasheet

MC33035 Datasheet

BRUSHLESS DC MOTOR CONTROLLER

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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.
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
Device
MC33035DW
MC33035P
ORDERING INFORMATION
Operating
Temperature Range
TA = – 40° to + 85°C
Package
SO–24L
Plastic DIP
BRUSHLESS DC
MOTOR CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
(SO–24L)
24
1
PIN CONNECTIONS
Top Drive
Output
BT 1
AT 2
Fwd/Rev 3
Sensor
Inputs
SA 4
SB 5
SC 6
Output Enable 7
Reference Output 8
Current Sense
Noninverting Input
9
Oscillator 10
Error Amp
Noninverting Input
Error Amp
Inverting Input
11
12
24 CT
23 Brake
22 60°/120° Select
21 AB
20 BB
19 CB
Bottom
Drive
Outputs
18 VC
17 VCC
16 Gnd
15
Current Sense
Inverting Input
14 Fault Output
13
Error Amp Out/
PWM Input
(Top View)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 2
1


Motorola Electronic Components Datasheet

MC33035 Datasheet

BRUSHLESS DC MOTOR CONTROLLER

No Preview Available !

MC33035
Representative Schematic Diagram
4
Fwd/Rev
60°/120°
Enable
Vin
5
6
3
2
7
17
18
8
Speed
Set
11
Faster 12
RT
13
CT 10
Rotor
Position
Decoder
Undervoltage
Lockout
Reference
Regulator
Error Amp
PWM
Oscillator
Thermal
Shutdown
R
Q
S
S
Q
R
16
Fault
14
2
1
VM
24
Output
Buffers
23
Brake
21
20
19
9
15
Current Sense
Reference
This device contains 285 active transistors.
N
SS
N
Motor
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33035
Description BRUSHLESS DC MOTOR CONTROLLER
Maker Motorola
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MC33035 Datasheet PDF





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