
SEMICONDUCTOR
TECHNICAL DATA
DC SERVO MOTOR
CONTROLLER/DRIVER
Order this document by MC33030/D
116
15
14
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
Reference
Input
Reference
Input Filter
Error Amp Output
Filter/Feedback Input
Gnd
Error Amp
Output
Error Amp
Inverting Input
Error Amp Non–
Inverting Input
Over–Current
Delay
Gnd
Error Amp
Input Filter
PIN CONNECTIONS
Device Operating
Temperature Range Package
ORDERING INFORMATION
MC33030DW
MC33030P TA = –40° to +85°CSOP–16L
DIP–16
P SUFFIX
PLASTIC PACKAGE
CASE 648C
(DIP–16)
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SOP–16L)
1
1
16
16
Driver
Output B
VCC
Driver
Output A
Over–Current
Reference
Pins 4, 5, 12 and 13 are electrical ground and heat
sink pins for IC.
1
MOTOROLA ANALOG IC DEVICE DATA
   

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
Motor
14
1011
VCC
ROC
CDLY 1516
Power
H–Switch
Programmable
Over–
Current
Detector
& Latch
4, 5, 12, 13
1
2
Reference
Position
VCC ++
–Direction
Memory
Window
Detector
Drive/
Brake
Logic
Over–
Voltage
Monitor
+
–
3
+
+
–
Error Amp
6
7
8
9
Feedback
Position
VCC
Representative Block Diagram
This device contains 119 active transistors.
Motorola, Inc. 1996 Rev 2
MC33030
2MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage VCC 36 V
Input Voltage Range
O A C t C t Li it
VIR –0.3 to VCC V
pgg
Op Amp, Comparator, Current Limit
(Pi 123678915)
IR
CC
(Pins 1, 2, 3, 6, 7, 8, 9, 15)
Input Differential Voltage Range
Op Amp Comparator (Pins 1236789)
VIDR –0.3 to VCC V
Op Amp, Comparator (Pins 1, 2, 3, 6, 7, 8, 9)
Delay Pin Sink Current (Pin 16) IDLY(sink) 20 mA
Output Source Current (Op Amp) Isource 10 mA
Drive Output V oltage Range (Note 1) VDRV –0.3 to (VCC + VF) V
Drive Output Source Current (Note 2) IDRV(source) 1.0 A
Drive Output Sink Current (Note 2) IDRV(sink) 1.0 A
Brake Diode Forward Current (Note 2) IF1.0 A
Power Dissipation and Thermal
Characteristics
°C/W
Ch
arac
t
er
i
s
ti
cs
P Suffix, Dual In Line Case 648C
Su , ua e Case 6 8C
Thermal Resistance, Junction–to–Air
Thermal Resistance Junction–to–Case
RθJA
RθJC
80
15
Th
erma
l
R
es
i
s
t
ance,
J
unc
ti
on–
t
o–
C
ase
(Pins 4, 5, 12, 13)
R
θJC
15
(Pins
4,
5,
12,
13)
DW Suffix, Dual In Line Case 751G
Thermal Resistance Junction to Air
RθJA
94
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case RθJA
R
θJC
94
18
Thermal
Resistance
,
Junction to Case
(Pins 4, 5, 12, 13)
RθJC
18
Operating Junction Temperature TJ+150 °C
Operating Ambient Temperature Range TA–40 to +85 °C
Storage Temperature Range Tstg –65 to +150 °C
NOTES: 1.The upper voltage level is clamped by the forward drop, VF, of the brake diode.
2. These values are for continuous DC current. Maximum package power dissipation limits must
be observed.
ELECTRICAL CHARACTERISTICS (VCC = 14 V, TA = 25°C, unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
ERROR AMP
Input Offset Voltage (– 40°C
p
TA
p
85°C)
V 7 0 V R 100 k
VIO –1.5 10 mV
VPin 6 = 7.0 V, RL = 100 k
Input Offset Current (VPin 6 = 1.0 V, RL = 100 k) IIO –0.7 – nA
Input Bias Current (VPin 6
=
7.0 V, RL
=
100 k)
IIB
–
7.0
–
nA
Input
Bias
Current
(VPi
n
6
=
7
.
0
V
,
RL
=
100
k)
IIB
–
7
.
0
–
nA
Input Common–Mode Voltage Range
∆V 20 mV R 100 k
VICR –0 to (VCC – 1.2) – V
∆VIO = 20 mV, RL = 100 k
Slew Rate, Open Loop (VID = 0.5 V, CL = 15 pF) SR – 0.40 – V/µs
Unity–Gain Crossover Frequency fc– 550 – kHz
Unity–Gain Phase Margin φm – 63 – deg.
Common–Mode Rejection Ratio (VPin 6 = 7.0 V, RL = 100 k) CMRR 50 82 – dB
Power Supply Rejection Ratio
V 90to16VV 70VR 100k
PSRR – 89 – dB
VCC = 9.0 to 16 V, VPin 6 = 7.0 V, RL = 100 k
Output Source Current (VPin 6 = 12 V) IO +–1.8 – mA
Output Sink Current (VPin 6 = 1.0 V) IO –– 250 – µA
Output Voltage Swing (RL = 17 k to Ground) VOH
VOL 12.5
–13.1
0.02 –
–V
V
NOTES: 3.The upper or lower hysteresis will be lost when operating the Input, Pin 3, close to the respective rail. Refer to Figure 4.
4.Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
MC33030
3
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, TA = 25°C, unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
WINDOW DETECTOR
Input Hysteresis Voltage (V1 – V4, V2 – V3, Figure 18) VH25 35 45 mV
Input Dead Zone Range (V2 – V4, Figure 18) VIDZ 166 210 254 mV
Input OffsetVoltage ([V2 – VPin 2] – [VPin 2 – V4] Figure 18) VIO –25 – mV
Input Functional Common–Mode Range (Note 3)
UThhld
(V 1 05)
V
pg()
Upper Threshold
LThhld
VIH
–(VCC – 1.05)
024
–
Lower Threshold VIL –0.24 –
Reference Input Self Centering Voltage
Pins 1 and 2 Open
VRSC –(1/2 VCC) – V
Pins 1 and 2 Open
Window Detector Propagation Delay
C t I t Pi 3 t D i O t t
tp(IN/DRV) –2.0 – µs
pg y
Comparator Input, Pin 3, to Drive Outputs
V 0 5 V R 390 Ω
µ
VID = 0.5 V, RL(DRV) = 390 Ω
OVER–CURRENT MONITOR
Over–Current Reference Resistor Voltage (Pin 15) ROC 3.9 4.3 4.7 V
Delay Pin Source Current
V 0 V R 27 k I 0 mA
IDLY(source) –5.5 6.9 µA
VDLY = 0 V, ROC = 27 k, IDRV = 0 mA
Delay Pin Sink Current (ROC = 27 k, IDRV = 0 mA)
V50V
IDLY(sink)
01
mA
y(
OC DRV )
VDLY = 5.0 V
V83V
– 0.1
07
–
VDLY = 8.3 V
V14V
– 0.7
16 5
–
VDLY = 14 V – 16.5 –
Delay Pin V oltage, Low State (IDLY = 0 mA) VOL(DLY) – 0.3 0.4 V
Over–Current Shutdown Threshold
V14V
Vth(OC)
68
75
82
V
VCC = 14 V
V80V
6.8
55
7.5
60
8.2
65
VCC = 8.0 V 5.5 6.0 6.5
Over–Current Shutdown Propagation Delay
Delay Capacitor Input, Pin 16, to Drive Outputs, VID = 0.5 V tp(DLY/DRV) – 1.8 – µs
POWER H–SWITCH
Drive–Output Saturation (– 40°C
p
TA
p
+ 85°C, Note 4)
Hi h St t (I 100 A)
(V 2)
(V 0 85)
V
p(
A)
High–State (Isource = 100 mA)
L St t (I 100 A)
VOH(DRV)
(VCC – 2) (VCC – 0.85)
012
–
10
Low–State (Isink = 100 mA)
VOL(DRV) – 0.12 1.0
Drive–Output Voltage Switching Time (CL = 15 pF)
Ri Ti
200
ns
pg g(
L
p)
Rise T ime
FllTi
tr
– 200
200
–
Fall T ime tf– 200 –
Brake Diode Forward Voltage Drop (IF = 200 mA, Note 4) VF– 1.04 2.5 V
TOTAL DEVICE
Standby Supply Current ICC –14 25 mA
Over–Voltage Shutdown Threshold
(40°C
p
T
p
85°C)
Vth(OV) 16.5 18 20.5 V
(– 40°C
p
TA
p
+ 85°C)
Over–Voltage Shutdown Hysteresis (Device “off” to “on”) VH(OV) 0.3 0.6 1.0 V
Operating Voltage Lower Threshold
(40°C
p
T
p
85°C)
VCC –7.5 8.0 V
(– 40°C
p
TA
p
+ 85°C)
NOTES: 3.The upper or lower hysteresis will be lost when operating the Input, Pin 3, close to the respective rail. Refer to Figure 4.
4.Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
MC33030
4MOTOROLA ANALOG IC DEVICE DATA
VCC
∆
VIO = 20 mV
RL = 100 k
Gnd
25 3.0 k100 1.0 k300
VCC
30
0
1.0
– 2.0
2.0
– 1.0
0
IL, LOAD CURRENT (
± µ
A)
10050 750– 25 TA, AMBIENT TEMPERA TURE (
°
C)
– 55
0
400
800
– 800
– 400
Figure 1. Error Amp Input Common–Mode
Voltage Range versus Temperature Figure 2. Error Amp Output Saturation
versus Load Current
0
Vsat, OUTPUT SATURATION VOLT AGE (V)
VICR
, INPUT COMMON–MODE RANGE (mV)
VCC
0 255075100
0
0
– 0.5
– 1.0
– 1.5
0.3
0.2
0.1 Gnd
– 25 TA, AMBIENT TEMPERATURE (
°
C) 125
Max. Pin 2 VICR so that
Pin 3 can change
state of drive outputs.
– 55
180
135
90
45
0
Figure 3. Open Loop Voltage Gain and
Phase versus Frequency
Phase
VCC = 14
Vout = 7.0 V
RL = 100 k
CL = 40 pF
TA = 25
°
C
Phase
Margin
= 63
°
1.0 10 100 10 k 100 k 1.0 M1.0 k
f, FREQUENCY (Hz)
60
80
40
20
0
Gain
Figure 4. Window Detector Reference–Input
Common–Mode Voltage Range
versus Temperature
AVOL, OPEN–LOOP VOLTAGE GAIN (dB)
VICR, INPUT COMMON–MODE RANGE (V)
φ
, EXCESS PHASE (DEGREES)
IL, LOAD CURRENT (
±
mA)
VCC = 14 V
Pin 2 = 7.00 V
6.85
V3
V2
TA, AMBIENT TEMPERATURE (
°
C)
6.95
6.90
7.10
7.05
7.00
7.15
0 25 50 75 100
0
– 1.0
1.0
0
VCC
Sink Saturation
RL = VCC
TA = 25
°
C
V1
– 55 – 25 125
Gnd
Figure 5. Window Detector Feedback–Input
Thresholds versus Temperature
0 200 400 600 800
Lower Hysteresis
Figure 6. Output Driver Saturation
versus Load Current
VFB, FEEDBACK–INPUT VOLT AGE (V)
Vsat, OUTPUT SATURATION VOLTAGE (V)
Source Saturation
RL to Gnd
TA = 25
°
C
Upper Hysteresis
V4
Gnd
Source Saturation
RL to Gnd
TA = 25
°
C
Sink Saturation
RL to VCC
TA = 25
°
C
125
MC33030
5
MOTOROLA ANALOG IC DEVICE DATA
Figure 7. Brake Diode Forward Current
versus Forward Voltage
VF, FORWARD VOLTAGE (V)
TA = 25
°
C
Figure 8. Output Source Current–Limit versus
Over–Current Reference Resistance
1.5
ROC, OVER–CURRENT REFERENCE RESISTANCE (k
Ω
)
VCC = 14 V
TA = 25
°
C
800
806040020
600
400
1.10.90.70.5
01.3
100
200
300
400
100
0
200
Isource, OUTPUT SOURCE CURRENT (mA)
IF, FORWARD CURRENT (mA)
500
TA, AMBIENT TEMPERATURE (
°
C)
Figure 9. Output Source Current–Limit
versus Temperature
– 55
VCC = 14 V
– 25 0
TA, AMBIENT TEMPERATURE (
°
C)
1.00
0.96
0.92
0.88
– 55 12525 50 10075
1.04
25
ROC = 27 k
ROC = 68 k
ROC = 15 k
12575500– 25 100
VCC = 14 V
0
400
600
200
Figure 10. Normalized Delay Pin Source
Current versus Temperature
Isource, OUTPUT SOURCE CURRENT (mA)
IDLY(source), DELAY PIN SOURCE CURRENT
(NORMALIZED)
Figure 11. Normalized Over–Current Delay
Threshold Voltage versus Temperature Figure 12. Supply Current versus
Supply Voltage
75 1005025– 55
0.96
0.98
1.04
1.00
0– 25
VCC = 14 V
Pins 6 to 7
Pins 2 to 8
TA = 25
°
C
125
28
24
20
1.02
24
16
32 40
0
4.0
8.0
12
VCC, SUPPLY VOLTAGE (V)
TA, AMBIENT TEMPERATURE (
°
C)
Over–
Voltage
Shutdown
Range
8.0016
V
th(OC), OVER–CURRENT DELAY THRESHOLD VOLTAGE
(NORMALIZED)
ICC, SUPPLY CURRENT (mA)
Minimum
Operating
Voltage
Range
MC33030
6MOTOROLA ANALOG IC DEVICE DATA
R , THERMAL RESISTANCE
JA
θ
JUNCTION–T O–AIR ( C/W)
°
Vth(OV), OVER–VOLT AGE SHUTDOWN THRESHOLD
(NORMALIZED)
PD(max) for TA = 50
°
C
R
θ
JA
PD(max) for TA = 70
°
C
R
θ
JA
Figure 13. Normalized Over–Voltage Shutdown
Threshold versus Temperature
– 25 0– 55 125
1.00
TA, AMBIENT TEMPERATURE (
°
C)
– 25 0 75 10050
TA, AMBIENT TEMPERATURE (
°
C)
– 55 12525 50 100 75 25
Figure 14. Normalized Over–Voltage Shutdown
Hysteresis versus Temperature
0.4
0.6
0.8
1.0
1.2
1.4
1.02
0.98
0.96
Vth(OV), OVER–VOLT AGE SHUTDOWN THRESHOLD
(NORMALIZED)
30
40
50
60
70
80
90
0
0.4
0.8
1.2
1.6
2.0
2.4
02030504010
L, LENGTH OF COPPER (mm)
100 2.8
PD, MAXIMUM POWER DISSIPATION (W)
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
2.0 oz.
Copper
Graph represents symmetrical layout
3.0 mmL
L
Figure 15. P Suffix (DIP–16) Thermal
Resistance and Maximum Power Dissipation
versus P.C.B. Copper Length
00
ÎÎÎ
ÎÎÎ
Graphs represent symmetrical layout
3.0 mm
Printed circuit board heatsink example
L
L
100
80
60
40
20
10 20 30 40 50
L, LENGTH OF COPPER (mm)
PD, MAXIMUM POWER DISSIPATION (W)
5.0
4.0
3.0
2.0
1.0
0
2.0 oz
Copper
ÎÎÎ
ÎÎÎ
R , THERMAL RESISTANCE
JA
θ
JUNCTION–T O–AIR ( C/W)
°
Figure 16. DW Suffix (SOP–16L) Thermal
Resistance and Maximum Power Dissipation
versus P.C.B. Copper Length
MC33030
7
MOTOROLA ANALOG IC DEVICE DATA
OPERATING DESCRIPTION
The MC33030 was designed to drive fractional horsepower
DC motors and sense actuator position by voltage feedback. A
typical servo application and representative internal block
diagram are shown in Figure 17. The system operates by
setting a voltage on the reference input of the Window
Dectector (Pin 1) which appears on (Pin 2). A DC motor then
drives a position sensor, usually a potentiometer driven by a
gear box, in a corrective fashion so that a voltage
proportional to position is present at Pin 3. The servo motor
will continue to run until the voltage at Pin 3 falls within the
dead zone, which is centered about the reference voltage.
The Window Detector is composed of two comparators, A
and B, each containing hysteresis. The reference input,
common to both comparators, is pre–biased at 1/2 VCC for
simple two position servo systems and can easily be
overriden by an external voltage divider. The feedback
voltage present at Pin 3 is connected to the center of two
resistors that are driven by an equal magnitude current
source and sink. This generates an offset voltage at the input
of each comparator which is centered about Pin 3 that can
float virtually from VCC to ground. The sum of the upper and
lower offset voltages is defined as the window detector input
dead zone range.
To increase system flexibility, an on–chip Error Amp is
provided. It can be used to buffer and/or gain–up the actuator
position voltage which has the effect of narrowing the dead
zone range. A PNP differential input stage is provided so that
the input common–mode voltage range will include ground.
The main design goal of the error amp output stage was to be
able to drive the window detector input. It typically can source
1.8 mA and sink 250 µA. Special design considerations must
be made if it is to be used for other applications.
The Power H–Switch provides a direct means for motor
drive and braking with a maximum source, sink, and brake
current of 1.0 A continuous. Maximum package power
dissipation limits must be observed. Refer to Figure 15 for
thermal information. For greater drive current requirements,
a method for buffering that maintains all the system features
is shown in Figure 30.
The Over–Current Monitor is designed to distinguish
between motor start–up or locked rotor conditions that can
occur when the actuator has reached its travel limit. A
fraction of the Power H–Switch source current is internally
fed into one of the two inverting inputs of the current
comparator, while the non–inverting input is driven by a
programmable current reference. This reference level is
controlled by the resistance value selected for ROC, and must
be greater than the required motor run–current with its
mechanical load over temperature; refer to Figure 8. During
an over–current condition, the comparator will turn off and
allow the current source to charge the delay capacitor , CDLY.
When CDLY charges to a level of 7.5 V, the set input of the
over–current latch will go high, disabling the drive and brake
functions of the Power H–Switch. The programmable time
delay is determined by the capacitance value–selected for
CDLY.
tDLY
+
Vref CDLY
IDLY(source)
+
7.5 CDLY
5.5 µA
+
1.36 CDLY in µF
This system allows the Power H–Switch to supply motor
start–up current for a predetermined amount of time. If the
rotor is locked, the system will time–out and shut–down. This
feature eliminates the need for servo end–of–travel or limit
switches. Care must be taken so as not to select too large of
a capacitance value for CDLY. An over–current condition for
an excessively long time–out period can cause the integrated
circuit to overheat and eventually fail. Again, the maximum
package power dissipation limits must be observed. The
over–current latch is reset upon power–up or by readjusting
VPin 2 as to cause VPin 3 to enter or pass through the dead
zone. This can be achieved by requesting the motor to
reverse direction.
An Over–Voltage Monitor circuit provides protection for
the integrated circuit and motor by disabling the Power
H–Switch functions if VCC should exceed 18 V. Resumption
of normal operation will commence when VCC falls below
17.4 V.
A timing diagram that depicts the operation of the
Drive/Brake Logic section is shown in Figure 18. The
waveforms grouped in [1] show a reference voltage that was
preset, appearing on Pin 2, which corresponds to the desired
actuator position. The true actuator position is represented
by the voltage on Pin 3. The points V1 through V4 represent
the input voltage thresholds of comparators A and B that
cause a change in their respective output state. They are
defined as follows:
V1 = Comparator B turn–off threshold
V2 = Comparator A turn–on threshold
V3 = Comparator A turn–off threshold
V4 = Comparator B turn–on threshold
V1–V4 = Comparator B input hysteresis voltage
V2–V3 = Comparator A input hysteresis voltage
V2–V4 = Window detector input dead zone range
|(V2–VPin2) – (VPin2 – V4)| = Window detector input
voltage
It must be remembered that points V1 through V4 always
try to follow and center about the reference voltage setting if
it is within the input common–mode voltage range of Pin 3;
Figures 4 and 5. Initially consider that the feedback input
voltage level is somewhere on the dashed line between V2
and V4 in [1]. This is within the dead zone range as defined
above and the motor will be off. Now if the reference voltage
is raised so that VPin 3 is less than V4, comparator B will
turn–on [3] enabling Q Drive, causing Drive Output A to sink
and B to source motor current [8]. The actuator will move in
Direction B until VPin 3 becomes greater than V1. Comparator
B will turn–off, activating the brake enable [4] and Q Brake [6]
causing Drive Output A to go high and B to go into a high
impedance state. The inertia of the mechanical system will
drive the motor as a generator creating a positive voltage on
Pin 10 with respect to Pin 14. The servo system can be
stopped quickly, so as not to over–shoot through the dead
zone range, by braking. This is accomplished by shorting the
motor/generator terminals together. Brake current will flow
into the diode at Drive Output B, through the internal VCC rail,
and out the emitter of the sourcing transistor at Drive Output
A. The end of the solid line and beginning of the dashed for
VPin 3 [1] indicates the possible resting position of the
actuator after braking.
MC33030
8MOTOROLA ANALOG IC DEVICE DATA
Inverting
Input
Over–Voltage
Monitor
Drive Brake Logic
+
Drive
Output A
Drive
Output B
VCC Motor
10
11
Power
H–Switch
Q Brake
Q Brake
Over–Current
Monitor
Over–Current
Reference
ROC
15
+
16
CDLY
Over–Current
Delay
5.5
µ
A
7.5 V
Ref.
50 k
R
S
Over–
Current
Latch
Q Drive
S
Q Drive
R
Brake Enable
Direction
Latch
18 V
Ref.
Gearbox and Linkage
Gnd
4, 5,12,13
+
Window
Detector
VCC
Reference
Input Filter
20 k
35
µ
A
A
B
3.0 k
3.0 k
35
µ
A
20 k
Non–
Inverting
Input 9
Input
Filter
+
VCC
Output
20 k
0.3 mA
820 k Error Amp
Error Amp
Output Filter/
Feedback
Input
Figure 17. Representative Block Diagram and Typical Servo Application
14
Q
Q
Q
100 k
2
1
Q
3
6
Reference
Input
7
100 k
If VPin 3 should continue to rise and become greater than V2,
the actuator will have over shot the dead zone range and cause
the motor to run in Direction A until VPin 3 is equal to V3. The
Drive/Brake behavior for Direction A is identical to that of B.
Overshooting the dead zone range in both directions can cause
the servo system to continuously hunt or oscillate. Notice that the
last motor run–direction is stored in the direction latch. This
information is needed to determine whether Q or Q Brake is to be
enabled when VPin 3 enters the dead zone range. The dashed
lines in [8,9] indicate the resulting waveforms of an over–current
condition that has exceeded the programmed time delay. Notice
that both Drive Outputs go into a high impedance state until VPin
2 is readjusted so that VPin 3 enters or crosses through the dead
zone [7, 4].
The inputs of the Error Amp and Window Detector can be
susceptible to the noise created by the brushes of the DC
motor and cause the servo to hunt. Therefore, each of these
inputs are provided with an internal series resistor and are
pinned out for an external bypass capacitor. It has been
found that placing a capacitor with
short leads
directly across
the brushes will significantly reduce noise problems. Good
quality RF bypass capacitors in the range of 0.001 to 0.1 µF
may be required. Many of the more economical motors will
generate significant levels of RF energy over a spectrum that
extends from DC to beyond 200 MHz. The capacitance value
and method of noise filtering must be determined on a
system by system basis.
Thus far, the operating description has been limited to
servo systems in which the motor mechanically drives a
potentiometer for position sensing. Figures 19, 20, 27, and 31
show examples that use light, magnetic flux, temperature,
and pressure as a means to drive the feedback element.
Figures 21, 22 and 23 are examples of two position, open
loop servo systems. In these systems, the motor runs the
actuator to each end of its travel limit where the Over–Current
Monitor detects a locked rotor condition and shuts down the
drive. Figures 32 and 33 show two possible methods of using
the MC33030 as a switching motor controller. In each
example a fixed reference voltage is applied to Pin 2. This
causes Vpin 3 to be less than V4 and Drive Output A, Pin 14,
to be in a low state saturating the TIP42 transistor. In Figure
32, the motor drives a tachometer that generates an ac
voltage proportional to RPM. This voltage is rectified, filtered,
divided down by the speed set potentiometer, and applied to
Pin. 8. The motor will accelerate until VPin 3 is equal to V1 at
which time Pin 14 will go to a high state and terminate the
motor drive. The motor will now coast until VPin 3 is less than
V4 where upon drive is then reapplied. The system operation
of Figure 31 is identical to that of 32 except the signal at Pin
3 is an amplified average of the motors drive and back EMF
voltages. Both systems exhibit excellent control of RPM with
variations of VCC; however, Figure 32 has somewhat better
torque characteristics at low RPM.
MC33030
9
MOTOROLA ANALOG IC DEVICE DATA
Drive/Brake
Logic
Power
H–Switch
Over–Current
Monitor CDLY Direction B
Feedback Input
less than V4
Dead Zone
Feedback Input
between V3 & V4
Direction A
Feedback Input
greater than V2
Dead Zone
Feedback Input
between V1 & V2
Reference Input Voltage
(Desired Actuator
Position)
Feedback Input
(T rue Actuator
Position)
Direction Latch
Q Output
Brake Enable
Q Brake
Q Brake
Direction Latch
Q Output
Sink
Source
Over–Current
Latch Reset Input
High Z
Sink
High Z
Source
Drive
Output A
[1]
7.5 V
V4
V3
V2
Comparator A
Non Inverting Input
Threshold
Comparator B
Inverting Input
Threshold
Comparator
B Output
[9]
[8]
[7]
[5]
Drive
Output B
[6]
[4]
[3]
[2]
Figure 18. Timing Diagram
Direction B
Feedback Input
less than V1
Comparator
A Output
Window
Detector
V1
MC33030
10 MOTOROLA ANALOG IC DEVICE DATA
10 k
Gain
3.9 k 20 k
TL173C
Linear
Hall
Effect
Sensor
VCC
B
9
Zero Flux
Centering
VCC
6
7
8
10 k
20 k
Error Amp
–
+
9
Centering
Adjust
Figure 19. Solar Tracking Servo System
R3 – 30 k, repositions servo during
R3 – darkness for next sunrise.
R1, R2 – Cadium Sulphide Photocell
R1, R2 – 5M Dark, 3.0 k light resistance
20 k
VCC
1
6
7
8
20 k
20 k
Error Amp
R3
R2
R1
≈
15
°
Offset
Figure 20. Magnetic Sensing Servo System
VCC
Typical sensitivity with gain set at 3.9 k is 1.5 mV/gauss.
Servo motor controls magnetic field about sensor .
Servo Driven
Wheel
0
1Input
MPS
A20
VCC
470
470
7
6
1 – Activates Drive A
0 – Activates Drive B
1
VCC/2
39 k
68 k
VCC
7
8
20 k
Error Amp 8
20 k
Error Amp
20 k
20 k
9
9
MRD3056
Latch
MRD3056
Latch
Over–current monitor (not shown) shuts down
servo when end stop is reached.
Over–current monitor (not shown) shuts down
servo when end stop is reached.
Figure 21. Infrared Latched Two Position
Servo System Figure 22. Digital Two Position Servo System
Drive A
Drive B
VCC
100 k
100 k
22 C
+
20 k
R
20 k
130 k
8
7
Vin
6
7
8
C2
C1
R
20 k
6
100 k
Error Amp 20 k
RError Amp
9
9
f
[
0.72
RC
fo
+
1
R2C1C2
Ǹ
2
p
R
q
20 k
Q
+
C1
C2
Ǹ
2
R = 1.0 M
C1 = 1000 pF
C2 = 100 pF
Figure 23. 0.25 Hz Square–Wave
Servo Agitator Figure 24. Second Order Low–Pass Active Filter
MC33030
11
MOTOROLA ANALOG IC DEVICE DATA
20 k
20 k
For 60 Hz R = 53.6 k, C = 0.05
Vin
20 k
7
8
VB
R2
R3
R4
VA
R
C
R/2
2C
C
R8
7
6
Figure 25. Notch Filter Figure 26. Differential Input Amplifier
Error Amp
Error Amp
–
9
R1
6
+
9
–
+
20 k
fnotch
+
1
2
p
RC
VPin 6
+
VA
ǒ
R3
)
R4
R1
)
R2
Ǔ
R2
R3–
ǒ
R4
R3VB
Ǔ
R1
R
R
VRef
R +
∆
RRVB
6
20 k R2
Set
Temperature
Cabin
Temperature
Sensor
VCC
R4
R3
R2
TR1
VCC
1
6
7
88
7
VA
20 k
20 k
20 k
Figure 27. Temperature Sensing Servo System
–
R4
–
Error Amp +
9
+Error Amp
In this application the servo motor drives the
heat/air conditioner modulator door in a duct system.
9
R3
VPin 6
+
R4
R3(VA–VB)
VPin 6
+
VCC
ǒ
R4
R3
)
1
Ǔ
ǒ
R1
R2
)
1
Ǔ
VA
*
VB
+
VRef
ǒ
D
R
4R
)
2
D
R
Ǔ
R1
+
R3,R
2
+
R
4
,R
1
uu
R
Figure 28. Bridge Amplifier
CDLY
16
4.7 k
VCC
LM311
ROC
15 7
18
4
2
3VRef
Vin
+
O.C.R
SQ
7.5 V
470
A
D2
D1D1
Q
RED2
RE
Figure 29. Remote Latched Shutdown
VCC
Motor
A direction change signal is required at Pins 2 or 3 to
reset the over–current latch.
RE
[
VF(D1)
)
VF(D2)–VBE(ON)
IMOTOR–IDRV(max)
+
B
This circuit maintains the brake and over–current
features of the MC33030. Set ROC to 15 k for
IDRV(max) ≈ 0.5 A.
From Drive
Outputs
Figure 30. Power H–Switch Buffer
MC33030
12 MOTOROLA ANALOG IC DEVICE DATA
6.0 V for 100 kPa
(14.5 PSI)
Pressure Differential
4, 5,12,13
Pressure
Differential
Reference Set
1.8 k
5.0 k
5.1 k
12 V
0.01 2
1
+
15 k
15
0.01
+
16
+
+
Motor14
O.C.
VCC = 12 V
11 10
DIR.
Q
S
QR
A
B
+
3
0.01
9
6
7
8
2.0 V for Zero
Pressure Differential
Figure 31. Adjustable Pressure Differential Regulator
1.0 k
Zero Pressure
Offset Adjust 2.0 k
VCC = 12 V
Pressure
Port
1.76 k
Gas Flow
MPX11DP
Silicon
Pressure
Sensor
Vacuum
Port
S +
1.0 k
LM324 Quad
Op Amp
2.4 k 4.12 k
S –
8.06 k
1.0 k
200
200
6.2 k
5.1 k
12 k
5.1 k
20 k
Gain
Q
Q
R
S
MC33030
13
MOTOROLA ANALOG IC DEVICE DATA
1.0 +10 k
1N4001
Speed
Set
MZ2361
1.0 k
4.7 k
Figure 32. Switching Motor Controller With Buffered Output and Tach Feedback
TACH +
+10 +
0.24
VCC = 12 V
+
3
9
6
7
8
16
14
1.0 k
MPS
A70
TIP42
100
+
1
2
1N753
Over
Current
Reset
0.002
10
11 Motor
100
4, 5,12,13
S
R
Q
Q
O.C.
+
Q
DIR.
R
SQ
+
15 30 k
12 V
100
MC33030
14 MOTOROLA ANALOG IC DEVICE DATA
+
+
+
S
R
Q
Q
O.C.
+
Q
DIR.
R
SQ
+
Figure 33. Switching Motor Controller With Buffered Output and Back EMF Sensing
+
2X–1N4001
10 k
1N753
+ 12 V
1.0 k
16
8
7
6
9
3
Speed
Set
4, 5, 12, 13
2
1
15
1011
30 k
14
10 k
Over
Current
Reset
1.0 10 k
20 k
1.0
+
100 +
VCC = 12 V
100 100
MPS
A70
1.0 k
Motor
TIP42
0.24 +
10
MC33030
15
MOTOROLA ANALOG IC DEVICE DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648C–03
(DIP–16)
DW SUFFIX
PLASTIC PACKAGE
CASE 751G–02
(SOP–16L)
18
916
MIN MINMAX MAX
MILLIMETERS INCHES
DIM
A
B
C
D
F
G
J
K
M
P
R
10.15
7.40
2.35
0.35
0.50
0.25
0.10
0
°
10.05
0.25
10.45
7.60
2.65
0.49
0.90
0.32
0.25
7
°
10.55
0.75
0.400
0.292
0.093
0.014
0.020
0.010
0.004
0
°
0.395
0.010
0.411
0.299
0.104
0.019
0.035
0.012
0.009
7
°
0.415
0.029
1.27 BSC 0.050 BSC
–A–
–B– P 8 PL
G 14 PL
–T–
D 16 PL K
C
SEATING
PLANE
M
R X 45°
0.25 (0.010) B
M M
0.25 (0.010) T A B
MS S
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.
F
J
0.13 (0.005) T A
MS
0.13 (0.005) T B
MS
MIN MINMAX MAX
MILLIMETERS
DIM
A
B
C
D
E
F
G
J
K
L
M
N
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD
FLASH.
5. INTERNAL LEAD CONNECTION, BETWEEN 4
AND 5, 12 AND 13.
18.80
6.10
3.69
0.38
1.02
0.20
2.92
0
°
0.39
21.34
6.60
4.69
0.53
1.78
0.38
3.43
10
°
1.01
0.740
0.240
0.145
0.015
0.040
0.008
0.115
0
°
0.015
0.840
0.260
0.185
0.021
0.070
0.015
0.135
10
°
0.040
1.27 BSC
2.54 BSC
7.62 BSC
0.050 BSC
0.100 BSC
0.300 BSC
–A–
–B–
18
916
NOTE 5
–T–
SEATING
PLANE
FE
G
D 16 PL
NK
C
L
M
J 16 PL
INCHES
OUTLINE DIMENSIONS
MC33030
16 MOTOROLA ANALOG IC DEVICE DATA
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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MC33030/D
*MC33030/D*
◊