MC33033 Motorola, MC33033 Datasheet - Page 16

• Manufacturer Part Number: MC33033
• Description: BRUSHLESS DC MOTOR CONTROLLER
• Manufacturer: Motorola

16
Sensor Inputs
Sensor Inputs
Bottom Drive
Power Switch
Motor Drive
Conducting
Transistors
Select Pin
Select Pin
Grounded
Top Drive
Current
60 /120
60 /120
Outputs
Outputs
Open
A
B
C
Code
Code
S C
S A
S B
S B
A B
B T
B B
C B
S C
A T
C T
S A
O
O
O
+
–
+
–
+
–
Figure 35. Three Phase, Six Step, Full Wave Commutation Waveforms
0
Q 1 + Q 6
100
100
60
Q 2 + Q 6
110
110
120
Full Speed (No PWM)
Q 2 + Q 4 Q 3 + Q 4 Q 3 + Q 5 Q 1 + Q 5 Q 1 + Q 6
111
010
180
011
011
MC33033
240
Rotor Electrical Position (Degrees)
001
001
300
101
000
FWD/REV = 1
360
100
100
420
MOTOROLA ANALOG IC DEVICE DATA
Q 2 + Q 6 Q 2 + Q 4 Q 3 + Q 4 Q 3 + Q 5
110
110
Reduced Speed ( 50% PWM)
480
111
010
540
011
011
600
001
001
660
Q 1 + Q 5
101
000
720