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Número de pieza | MC33030 | |
Descripción | DC SERVO MOTOR CONTROLLER/DRIVER | |
Fabricantes | Motorola Semiconductors | |
Logotipo | ||
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MC33030
DC Servo Motor
Controller/Driver
The MC33030 is a monolithic DC servo motor controller providing all
active functions necessary for a complete closed loop system. This device
consists of an on–chip op amp and window comparator with wide input
common–mode range, drive and brake logic with direction memory, Power
H–Switch driver capable of 1.0 A, independently programmable over–current
monitor and shutdown delay, and over–voltage monitor. This part is ideally
suited for almost any servo positioning application that requires sensing of
temperature, pressure, light, magnetic flux, or any other means that can be
converted to a voltage.
Although this device is primarily intended for servo applications, it can be
used as a switchmode motor controller.
• On–Chip Error Amp for Feedback Monitoring
• Window Detector with Deadband and Self Centering Reference Input
• Drive/Brake Logic with Direction Memory
• 1.0 A Power H–Switch
• Programmable Over–Current Detector
• Programmable Over–Current Shutdown Delay
• Over–Voltage Shutdown
VCC
Feedback
Position 8
7
6
Representative Block Diagram
9
Error Amp
+
–
+
VCC
11
Over–
Voltage
Monitor
Motor
10 14
Power
H–Switch
3
+
VCC
Reference
Position 1
+
–
Window
Detector
+
–
Drive/
Brake
Logic
Direction
Memory
Programmable
Over–
Current
Detector
& Latch
2
4, 5, 12, 13
16
CDLY
15
ROC
This device contains 119 active transistors.
DC SERVO MOTOR
CONTROLLER/DRIVER
SEMICONDUCTOR
TECHNICAL DATA
16
1
P SUFFIX
PLASTIC PACKAGE
CASE 648C
(DIP–16)
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SOP–16L)
PIN CONNECTIONS
Reference
Input
Reference
Input Filter
Error Amp Output
Filter/Feedback Input
Gnd
1
2
3
4
5
16
Over–Current
Delay
15 Over–Current
Reference
14
Driver
Output A
13
Gnd
12
Error Amp
Output
Error Amp
Inverting Input
Error Amp Non–
Inverting Input
6
7
8
11 VCC
10
Driver
Output B
9
Error Amp
Input Filter
(Top View)
Pins 4, 5, 12 and 13 are electrical ground and heat
sink pins for IC.
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33030DW
TA = – 40° to +85°C
MC33030P
SOP–16L
DIP–16
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 2
1
1 page MC33030
Figure 7. Brake Diode Forward Current
versus Forward Voltage
500
TA = 25°C
400
300
200
100
Figure 8. Output Source Current–Limit versus
Over–Current Reference Resistance
800
VCC = 14 V
TA = 25°C
600
400
200
0
0.5 0.7 0.9 1.1 1.3 1.5
VF, FORWARD VOLTAGE (V)
0
0 20 40 60 80 100
ROC, OVER–CURRENT REFERENCE RESISTANCE (kΩ)
Figure 9. Output Source Current–Limit
versus Temperature
600
ROC = 15 k
VCC = 14 V
400
ROC = 27 k
200
ROC = 68 k
0
– 55 – 25 0
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 10. Normalized Delay Pin Source
Current versus Temperature
1.04
1.00
0.96
0.92
0.88
– 55
VCC = 14 V
– 25 0
25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
Figure 11. Normalized Over–Current Delay
Threshold Voltage versus Temperature
1.04
1.02
1.00
0.98
0.96
– 55
VCC = 14 V
– 25 0
25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
Figure 12. Supply Current versus
Supply Voltage
28
Pins 6 to 7
24 Pins 2 to 8
TA = 25°C
20
16
12
8.0
Minimum
Over–
4.0
Operating
Voltage
Voltage
Shutdown
0
Range
Range
0 8.0 16 24 32
VCC, SUPPLY VOLTAGE (V)
40
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page Figure 25. Notch Filter
RR
Vin
2C
R/2
CC
9
8 20 k
7
20 k
6
+ Error Amp
–
+fnotch
1
2pRC
For 60 Hz R = 53.6 k, C = 0.05
MC33030
Figure 26. Differential Input Amplifier
9
R1
VA
R2
R3
VB
8 20 k
7
20 k
Error Amp
+
–
ǒ Ǔ ǒ ǓR4 6
+ ))VPin 6
VA
R3
R1
R4
R2
R2
R3
–
R4
R3
VB
Figure 27. Temperature Sensing Servo System
VCC
Cabin
Temperature T R1
Sensor
R2 R3 R4
9
8 20 k
7
20 k
6
Error Amp
+
–
VCC
Set
Temperature
ǒǒ ǓǓ+ ))VPin6
VCC
R4
R3
1
R1
R2
1
1
In this application the servo motor drives the
heat/air conditioner modulator door in a duct system.
Figure 28. Bridge Amplifier
VRef
R + ∆R
R
R
VB R1
R R2
9
8 20 k
7
20 k
+ Error Amp
–
VA R3
R4 6
ǒ Ǔ* + )VA
VB
VRef
DR
4R 2DR
+ + uuR1 R3, R2 R4, R1
R
+VPin 6
R4
R3
(VA–VB)
Figure 29. Remote Latched Shutdown
QR
O.C.
QS
7.5 V
16
CDLY
+
15
ROC
4.7 k
+
VCC
17 8
2
3
Vin
4 VRef
LM311
A direction change signal is required at Pins 2 or 3 to
reset the over–current latch.
Figure 30. Power H–Switch Buffer
[ )RE
VF(D1) VF(D2)–VBE(ON)
IMOTOR–IDRV(max)
VCC
RE
D1 D2
Motor
RE
D1 D2
From Drive
Outputs
A
470
B
This circuit maintains the brake and over–current
features of the MC33030. Set ROC to 15 k for
IDRV(max) ≈ 0.5 A.
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page |
Páginas | Total 16 Páginas | |
PDF Descargar | [ Datasheet MC33030.PDF ] |
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