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 onchip op amp and window comparator with
wide input commonmode range, drive and brake logic with direction
memory, Power HSwitch driver capable of 1.0 A, independently
programmable overcurrent monitor and shutdown delay, and
overvoltage 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.
OnChip Error Amp for Feedback Monitoring
Window Detector with Deadband and Self Centering
Reference Input
Drive/Brake Logic with Direction Memory
1.0 A Power HSwitch
Programmable OverCurrent Detector
Programmable OverCurrent Shutdown Delay
OverVoltage Shutdown

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MARKING
DIAGRAMS
16

16

PDIP16
P SUFFIX
CASE 648C

MC33030P
AWLYYWW
1

16
SO16W
DW SUFFIX
CASE 751G

16

MC33030DW
AWLYYWW

1
A
WL
YY
WW

= Assembly Location
= Wafer Lot
= Year
= Work Week

Motor

VCC

VCC
11

Feedback
Position 8

Error Amp

OverVoltage
Monitor

Drive/
Brake
Logic

Window
Detector
+

Power
H-Switch

Gnd

VCC

Reference
Input
Reference
Input Filter
Error Amp Output
Filter/Feedback Input

PIN CONNECTIONS

14

10

Programmable
OverCurrent
Detector
& Latch

Direction
Memory

Reference
Position 1

Error Amp
Output
Error Amp
Inverting Input
Error Amp NonInverting Input

Over-Current
Delay
Over-Current
15
Reference
Driver
14
Output A

16

2
3
4

13

12

11 VCC

10

Gnd

Driver
Output B
Error Amp
Input Filter

(Top View)
Pins 4, 5, 12 and 13 are electrical ground and heat
sink pins for IC.

ORDERING INFORMATION

2
4, 5, 12, 13

16

15

CDLY

ROC

This device contains 119 active transistors.

Device

Package

Shipping

MC33030DW

SO16W

47 Units/Rail

MC33030DWR2

SO16W

1000 Tape & Reel

MC33030P

PDIP16

25 Units/Rail

Representative Block Diagram

Semiconductor Components Industries, LLC, 2002

February, 2002 Rev. 4

Publication Order Number:

MC33030/D

MC33030
MAXIMUM RATINGS
Rating

Symbol

Value

Unit

Power Supply Voltage

VCC

36

Input
u Voltage
o age Range
a ge
Op Amp,, Comparator,, Current Limit
(Pi 1,
1 2,
2 3,
3 6,
6 7, 8,
8 9,
9 15)
1 )
(Pins

VIR

0.3
0 3 to
o VCC

VIDR

0.3
0 3 to
o VCC

IDLY(sink)
Isource

20

mA

10

mA

VDRV
IDRV(source)
IDRV(sink)

0.3 to (VCC + VF)

1.0

1.0

IF

1.0

Input
u Differential
e e a Voltage
o age Range
a ge
Op Amp, Comparator (Pins 1, 2, 3, 6, 7, 8, 9)
Delay Pin Sink Current (Pin 16)
Output Source Current (Op Amp)
Drive Output Voltage Range (Note 1)
Drive Output Source Current (Note 2)
Drive Output Sink Current (Note 2)
Brake Diode Forward Current (Note 2)

A
C/W

Power Dissipation and Thermal

Characteristics
P Suffix, Dual In Line Case 648C
Thermal Resistance, JunctiontoAir
Thermal Resistance
Resistance, Junction
JunctiontoCase
to Case
(Pins 4, 5, 12, 13)
DW Suffix, Dual In Line Case 751G
Resistance JunctiontoAir
J nction to Air
Thermal Resistance,
Thermal Resistance, JunctiontoCase
(Pins 4, 5, 12, 13)

RJA
RJC

80
15

RJA
RJC

94
18

TJ
TA
Tstg

+150

40 to +85

65 to +150

Operating Junction Temperature

Operating Ambient Temperature Range
Storage Temperature Range
Electrostatic Discharge Sensitivity (ESD)
Human Body Model (HBM)
Machine Model (MM)

ESD

V
2000
200

ELECTRICAL CHARACTERISTICS (VCC = 14 V, TA = 25C, unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

u O
se Voltage
o age (( 40C
0 C  TA  85C)
85 C)
Input
Offset
VPin 6 = 7.0 V, RL = 100 k

VIO

1.5
5

10
0

mV

Input Offset Current (VPin 6 = 1.0 V, RL = 100 k)

IIO
IIB

0.7

nA

70
7.0

nA

VICR

0 to
o (V
( CC 1.2))

Slew Rate, Open Loop (VID = 0.5 V, CL = 15 pF)

SR

0.40

V/s

UnityGain Crossover Frequency

fc
m

550

kHz

63

deg.

CommonMode Rejection Ratio (VPin 6 = 7.0 V, RL = 100 k)

CMRR

50

82

dB

Power
o e Supply
Su y Rejection
ejec o Ratio
a o
VCC = 9.0 to 16 V, VPin 6 = 7.0 V, RL = 100 k

PSRR
S

89

dB
d

IO +
IO

1.8

mA

250

VOH
VOL

12.5

13.1
0.02

V
V

ERROR AMP

Input Bias Current (VPin 6 = 7

0 V,
V RL = 100 k)
7.0
Input
u CommonMode
Co
o
ode Voltage
o age Range
a ge
VIO = 20 mV, RL = 100 k

UnityGain Phase Margin

Output Source Current (VPin 6 = 12 V)

Output Sink Current (VPin 6 = 1.0 V)
Output Voltage Swing (RL = 17 k to Ground)

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.

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MC33030
ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, TA = 25C, unless otherwise noted.)
Characteristic

Symbol

Min

Typ

Max

Unit

WINDOW DETECTOR
VH

25

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
u Functional
u c o a Co
CommonMode
o
ode Range
a ge ((Note
o e 3)
Upper Threshold
L
Lower
Threshold
Th h ld

VIH
VIL

((VCC 1.05))
0 24
0.24

VRSC

((1/2
/ VCC)

tp(IN/DRV)
(IN/DRV)

2.0
0

ROC

3.9

4.3

4.7

IDLY(source)

5.5
5
5

6.9
6
9

0.1
0
0.7
16.5
16 5

0.3

0.4

6.8
5.5

7.5
60
6.0

8.2
6
6.5

tp(DLY/DRV)

1.8

VOH(DRV)
VOL(DRV)

((VCC 2))

((VCC 0.85))
0 12
0.12

10
1.0

tr
tf

200
200

VF

1.04

2.5

ICC

14

25

mA

OverVoltage
O
e o age Shutdown
S u do
Threshold
es o d
( 40C  TA  + 85C)

Vth(OV)

16.5
65

18
8

20.5
05

OverVoltage Shutdown Hysteresis (Device off to on)

VH(OV)

0.3

0.6

1.0

VCC

7.5
5

8.0
8
0

Input Hysteresis Voltage (V1 V4, V2 V3, Figure 18)

Reference
e e e ce Input
u Self
Se Centering
Ce e g Voltage
o age
Pins 1 and 2 Open
Window
do Detector
e ec o Propagation
o aga o Delay
e ay
Comparator Input,, Pin 3,, to Drive Outputs
VID = 0
0.5 V
V, RL(DRV) = 390
OVERCURRENT MONITOR
OverCurrent Reference Resistor Voltage (Pin 15)
Delay
Source
Current
e ay Pin Sou
ce Cu
e
VDLY = 0 V, ROC = 27 k, IDRV = 0 mA
Delay
e ay Pin S
Sink Cu
Current
e ((ROC = 27 k,, IDRV = 0 mA))
VDLY = 5.0 V
83V
VDLY = 8.3
VDLY = 14 V

IDLY(sink)

Delay Pin Voltage, Low State (IDLY = 0 mA)

VOL(DLY)

OverCurrent
O
e Cu e Shutdown
S u do
Threshold
es o d
VCC = 14 V
80V
VCC = 8.0

mA

Vth(OC)

OverCurrent Shutdown Propagation Delay

Delay Capacitor Input, Pin 16, to Drive Outputs, VID = 0.5 V

V
V

POWER HSWITCH
DriveOutput
e Ou u Saturation
Sa u a o (
( 40C
0 C  TA + 85C,
85 C, Note
o e 4))
HighState
g
((Isource = 100 mA))
L
S
A)
LowState
(Isink = 100 mA)

DriveOutput
e Ou u Voltage
o age Switching
S c g Time
e (CL = 15
5 pF))
Rise Time
F ll Ti
Fall
Time

nss

Brake Diode Forward Voltage Drop (IF = 200 mA, Note 4)

TOTAL DEVICE
Standby Supply Current

Operating
O
e a g Voltage
o age Lower
o e Threshold
es o d
( 40C  TA  + 85C)

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.

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VIO = 20 mV
RL = 100 k

Vsat, OUTPUT SATURATION VOLTAGE (V)

VCC

400
800
800
400
Gnd
25

50

25

75

100

125

0
VCC
1.0

2.0

Source Saturation
RL to Gnd
TA = 25C
Sink Saturation
RL to VCC
TA = 25C

2.0
1.0

Gnd
0
30

100

1.0 k

3.0 k

IL, LOAD CURRENT ( A)

Figure 1. Error Amp Input CommonMode

Voltage Range versus Temperature

Figure 2. Error Amp Output Saturation

versus Load Current

80

Max. Pin 2 VICR so

that Pin 3 can change
state of drive outputs.

0.5

60

45
Gain

1.0

VCC

1.5

Phase

40

90

VCC = 14
Vout = 7.0 V
20 R = 100 k
L
CL = 40 pF
TA = 25C
0
1.0
10

Phase
Margin
= 63

100

1.0 k

10 k

135

180
1.0 M

100 k

0.3
0.2
0.1

Gnd

0
55

Vsat, OUTPUT SATURATION VOLTAGE (V)

V2
Upper Hysteresis

V3
VCC = 14 V
Pin 2 = 7.00 V

7.00
6.95

V1
Lower Hysteresis

6.90
6.85
55

25

25

50

50

75

100

125

Figure 4. Window Detector ReferenceInput

CommonMode Voltage Range
versus Temperature

7.15

7.05

25

TA, AMBIENT TEMPERATURE (C)

Figure 3. Open Loop Voltage Gain and

Phase versus Frequency

7.10

25

f, FREQUENCY (Hz)

VFB, FEEDBACKINPUT VOLTAGE (V)

300

TA, AMBIENT TEMPERATURE (C)

, EXCESS PHASE (DEGREES)

VICR, INPUT COMMONMODE RANGE (V)

0
55

AVOL, OPENLOOP VOLTAGE GAIN (dB)

VICR, INPUT COMMONMODE RANGE (mV)

MC33030

V4
75

100

125

0
Source Saturation
RL to Gnd
TA = 25C

VCC
1.0

1.0

0
0

Sink Saturation
RL = VCC
TA = 25C
200

Gnd
400

600

IL, LOAD CURRENT ( mA)

TA, AMBIENT TEMPERATURE (C)

Figure 5. Window Detector FeedbackInput

Thresholds versus Temperature

Figure 6. Output Driver Saturation

versus Load Current

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800

TA = 25C
400
300
200
100

0.7

0.9

1.1

1.3

1.5

600

400

200

0
0

40

60

80

100

Figure 8. Output Source CurrentLimit versus

OverCurrent Reference Resistance

VCC = 14 V

ROC = 27 k

200
ROC = 68 k

25

50

25

75

100

125

IDLY, DELAY PIN SOURCE CURRENT

(NORMALIZED)

Figure 7. Brake Diode Forward Current

versus Forward Voltage

400

1.04

1.00

0.96

0.92
VCC = 14 V
0.88
55

25

25

50

75

100

TA, AMBIENT TEMPERATURE (C)

TA, AMBIENT TEMPERATURE (C)

Figure 9. Output Source CurrentLimit

versus Temperature

Figure 10. Normalized Delay Pin Source

Current versus Temperature

125

28

1.04

1.02

1.00

0.98
VCC = 14 V
0.96
55

20

ROC, OVERCURRENT REFERENCE RESISTANCE (k)

ROC = 15 k

0
55

VCC = 14 V
TA = 25C

VF, FORWARD VOLTAGE (V)

600

Vth(OC), OVERCURRENT DELAY THRESHOLD

VOLTAGE (NORMALIZED)

Isource, OUTPUT SOURCE CURRENT (mA)

0
0.5

800

ICC, SUPPLY CURRENT (mA)

IF, FORWARD CURRENT (mA)

500

Isource, OUTPUT SOURCE CURRENT (mA)

MC33030

25

25

50

75

100

125

24
20

Pins 6 to 7
Pins 2 to 8
TA = 25C

16
12
8.0

Minimum
Operating
Voltage
Range

4.0
0

8.0

16

Over
Voltage
Shutdown
Range
24

32

VCC, SUPPLY VOLTAGE (V)

TA, AMBIENT TEMPERATURE (C)

Figure 11. Normalized OverCurrent Delay

Threshold Voltage versus Temperature

Figure 12. Supply Current versus

Supply Voltage

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40

0.98

0.96
25

25

50

75

100

125

TA, AMBIENT TEMPERATURE (C)

Figure 13. Normalized OverVoltage Shutdown

Threshold versus Temperature

RJA, THERMAL RESISTANCE

JUNCTIONTOAIR (C/W)

100

1.2
1.0
0.8
0.6
0.4
55

25

RJA

60

2.0 oz
Copper

L
3.0 mm
Graphs represent symmetrical layout

40

5.0
4.0
3.0
2.0

PD(max) for TA = 70C

20

10

20

30

1.0
0
50

40

L, LENGTH OF COPPER (mm)

Figure 15. P Suffix (DIP16) Thermal

Resistance and Maximum Power Dissipation
versus P.C.B. Copper Length

100

2.8
PD(max) for TA = 50C

90

2.4

80

Graph represents symmetrical layout

70

2.0 oz.
Copper

60

50
RJA

40

3.0 mm

10

2.0
1.6
1.2
0.8
0.4

30
0

20

30

40

L, LENGTH OF COPPER (mm)

Figure 16. DW Suffix (SOP16L) Thermal

Resistance and Maximum Power Dissipation
versus P.C.B. Copper Length

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75

100

125

Figure 14. Normalized OverVoltage Shutdown

Hysteresis versus Temperature

50

TA, AMBIENT TEMPERATURE (C)

Printed circuit board heatsink example

80

25

0
50

PD, MAXIMUM POWER DISSIPATION (W)

55

1.4

PD, MAXIMUM POWER DISSIPATION (W)

1.00

Vth(OV), OVERVOLTAGE SHUTDOWN THRESHOLD

(NORMALIZED)

1.02

RJA, THERMAL RESISTANCE

JUNCTIONTOAIR (C/W)

Vth(OV), OVERVOLTAGE SHUTDOWN THRESHOLD

(NORMALIZED)

MC33030

MC33030
OPERATING DESCRIPTION
mechanical load over temperature; refer to Figure 8. During
an overcurrent 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
overcurrent latch will go high, disabling the drive and
brake functions of the Power HSwitch. The programmable
time delay is determined by the capacitance valueselected
for CDLY.

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
Detector (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 prebiased at 1/2 VCC for
simple two position servo systems and can easily be
overridden 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 onchip Error Amp is
provided. It can be used to buffer and/or gainup 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 commonmode 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 A. Special design
considerations must be made if it is to be used for other
applications.
The Power HSwitch 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 OverCurrent Monitor is designed to distinguish
between motor startup or locked rotor conditions that can
occur when the actuator has reached its travel limit. A
fraction of the Power HSwitch source current is internally
fed into one of the two inverting inputs of the current
comparator, while the noninverting 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 runcurrent with its

DLY

DLY  7.5 C DLY  1.36 C

in F
DLY
5.5 A
DLY(source)
ref

This system allows the Power HSwitch to supply motor

startup current for a predetermined amount of time. If the
rotor is locked, the system will timeout and shutdown.
This feature eliminates the need for servo endoftravel or
limit switches. Care must be taken so as not to select too
large of a capacitance value for CDLY. An overcurrent
condition for an excessively long timeout period can cause
the integrated circuit to overheat and eventually fail. Again,
the maximum package power dissipation limits must be
observed. The overcurrent latch is reset upon powerup 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 OverVoltage Monitor circuit provides protection for
the integrated circuit and motor by disabling the Power
HSwitch 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 turnoff threshold
V2 = Comparator A turnon threshold
V3 = Comparator A turnoff threshold
V4 = Comparator B turnon threshold
V1V4 = Comparator B input hysteresis voltage
V2V3 = Comparator A input hysteresis voltage
V2V4 = Window detector input dead zone range
|(V2VPin2) (VPin2 V4)| = Window detector input voltage

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MC33030
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 overshoot 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.

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 commonmode 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
turnon [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 turnoff, activating the brake enable [4]

VCC
Motor

Gearbox and Linkage

VCC

NonInverting
Input

Input
Filter

11

7 20 k

Output

Error Amp
Output Filter/
Feedback
Input

18 V
Ref.
0.3 mA

20 k

Drive Brake Logic

Q Drive

35
A

B
R

3.0 k

Reference
Input
1 100 k

Q Brake

Direction
Latch

Power
H-Switch

Q Brake
S
Q
Q Drive

35
A

VCC

Brake Enable

+
20 k
OverCurrent
Latch

100 k
2
Reference
Input Filter

Over-Voltage
Monitor

3.0 k

10

Drive
Output A
14
+

8 20 k Error Amp
Inverting
Input

Drive
Output B

5.5
A

50 k
+

7.5 V
Ref.

Window
Detector
4, 5,12,13

Over-Current
Delay

Gnd

Over-Current
Monitor
16
CDLY

15 Over-Current
ROC Reference

Figure 17. Representative Block Diagram and Typical Servo Application

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MC33030
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
OverCurrent 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.

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 rundirection 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 overcurrent
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 F 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.

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MC33030

Comparator A
Non Inverting Input
Threshold

Window
Detector

V2
V3

Reference Input Voltage

(Desired Actuator
Position)
Comparator B
Inverting Input
Threshold

[1]
V1
V4

Feedback Input
(True Actuator
Position)
[2]

Comparator
A Output
Comparator
B Output

[3]

[4]

Brake Enable

Direction Latch
Q Output

[5]

Direction Latch
Q Output
Drive/Brake
Logic
Q Brake

[6]
Q Brake
[7]

Over-Current
Latch Reset Input
Source
Drive
Output A
Power
H-Switch

Sink
[8]

Source
Drive
Output B

Over-Current
Monitor

High Z

High Z
Sink
7.5 V

CDLY
Direction B
Feedback Input
less than V1

Dead Zone
Feedback Input
between V1 & V2

Direction A
Feedback Input
greater than V2

Figure 18. Timing Diagram

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[9]
Dead Zone
Feedback Input
between V3 & V4

Direction B
Feedback Input
less than V4

MC33030
R1, R2 - Cadium Sulphide Photocell
R1, R2 - 5M Dark, 3.0 k light resistance

VCC
R1

15
Offset

Zero Flux
Centering
20 k

R3 - 30 k, repositions servo during

R3 - darkness for next sunrise.
9
8 20 k

R3

R2

7
Servo Driven
Wheel

20 k

Error Amp
+

Linear
Hall
Effect
Sensor

VCC
3.9 k

TL173C

Error Amp

8 20 k
7

10 k

VCC

20 k
6

Gain

VCC
1

Centering
Adjust

10 k

Typical sensitivity with gain set at 3.9 k is 1.5 mV/gauss.

Servo motor controls magnetic field about sensor.

Figure 19. Solar Tracking Servo System

Figure 20. Magnetic Sensing Servo System

VCC
470
MRD3056
Latch
Drive A

9
39 k

MRD3056
Latch
Drive B

8
7

Error Amp

20 k

1
0

20 k

68 k

VCC

Input
MPS
A20

9
8
7

Error Amp

20 k
20 k

470
VCC/2

1 - Activates Drive A
0 - Activates Drive B

Overcurrent monitor (not shown) shuts down

servo when end stop is reached.

Overcurrent 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

9
VCC

Vin
9

100 k

100 k

22

8 20 k
7
100 k
130 k
+ R
C

C1

C2

8 20 k
7
6

Error Amp

20 k

f o 

1
R 2C 1C 2
2

Error Amp

20 k

R = 1.0 M
C1 = 1000 pF
C2 = 100 pF

C1

f  0.72
RC
R20k

Q 

Figure 23. 0.25 Hz SquareWave

Servo Agitator

C2

Figure 24. Second Order LowPass Active Filter

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MC33030
9

9
R

Vin

8
7

2C

notch

20 k

R/2
C
f

20 k

+
-

VA

Error Amp

R4

1
2RC

For 60 Hz R = 53.6 k, C = 0.05

Figure 25. Notch Filter

R2

R3

R4

Set
Temperature

Pin6

20 k
20 k

+
-

R + R

R2

1

VB R1

20 k

R2

R3

VA

20 k
R4

Error Amp

R
V V V 
A
B
Ref 4R
2
R

R 1  R 3, R 2  R 4, R 1  R
V

In this application the servo motor drives the

heat/air conditioner modulator door in a duct system.

Pin6

R
 4 (VAVB)
R3

Figure 27. Temperature Sensing Servo System

VRef

Error Amp

R4

1
CC R
3
R1

R3
R4 R
2  R 4 V
A R
R R
R3 B
3
1
2

Figure 26. Differential Input Amplifier

VCC

V

R1

VCC

Cabin
Temperature T
Sensor

Pin6

Error Amp

20 k

R3

VB

R2

8 20 k

R1

Figure 28. Bridge Amplifier

R 
E

VF(D )
 VF(D )VBE(ON)

1
2
IMOTORIDRV(max)

VCC


O.C.
Q

S
7.5 V

16
CDLY

4.7 k

15
ROC

RE
D1 D2

VCC

17

2
3

Vin
VRef

Motor

RE
D1 D2

A
From Drive
Outputs

LM311

470
B

This circuit maintains the brake and overcurrent

features of the MC33030. Set ROC to 15 k for
IDRV(max) 0.5 A.

A direction change signal is required at Pins 2 or 3 to

reset the overcurrent latch.

Figure 29. Remote Latched Shutdown

Figure 30. Power HSwitch Buffer

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MC33030
Gas Flow

VCC = 12 V
6.2 k

1.76 k
12 k

Zero Pressure 2.0 k

Offset Adjust

LM324 Quad
Op Amp

8.06 k

1.0 k
5.1 k

S-

200

5.1 k

MPX11DP
Silicon
Pressure
Sensor

200
20 k
Gain

1.0 k

Pressure
Port

4.12 k

2.4 k

S+

Vacuum
Port

1.0 k

2.0 V for Zero

Pressure Differential

VCC = 12 V

0.01

6.0 V for 100 kPa

(14.5 PSI)
Pressure Differential

Motor
9

11

14

10

8
7
6
+
B
R Q

DIR.
S Q

A
12 V
+
Pressure
Differential
Reference Set

5.1 k
5.0 k
1.8 k

Q R

O.C.
0.01 2

16

4, 5,12,13

0.01

Figure 31. Adjustable Pressure Differential Regulator

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15
15 k

MC33030
VCC = 12 V
+

100

TACH

100

0.002

Speed
Set
1N4001
+ 10 k
1.0

0.24
TIP42

11

100

14

10

10

1.0 k
MPS
A70
Motor

7
6

MZ2361

+
RQ

DIR.
S Q
+

12 V
Over
Current
Reset

QR
O.C.
Q S

4.7 k
2

1N753
15

16

4, 5,12,13

30 k

1.0 k

Figure 32. Switching Motor Controller With Buffered Output and Tach Feedback

VCC = 12 V
100
+
Speed
Set
10 k

2X-1N4001

10 k
1.0

+
100

1.0
11

10

14

0.24 10

100

TIP42
+

8
7

10 k

20 k 6

+
RQ

DIR.
S Q
+

Over
Current
Reset

+ 12 V

Q R
O.C.
Q S

1N753
16
1.0 k

4, 5, 12, 13

15

30 k

Figure 33. Switching Motor Controller With Buffered Output and Back EMF Sensing
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1.0 k
MPS
A70
Motor

MC33030
PACKAGE DIMENSIONS
PDIP16
P SUFFIX
CASE 648C04
ISSUE D
A

E
G
16X

0.005 (0.13)

16X

16

T B

NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

DIM
A
B
C
D
E
F
G
J
K
L
M
N

INCHES
MIN
MAX
0.744
0.783
0.240
0.260
0.145
0.185
0.015
0.021
0.050 BSC
0.040
0.70
0.100 BSC
0.008
0.015
0.115
0.135
0.300 BSC
0

10

0.015
0.040

MILLIMETERS
MIN
MAX
18.90
19.90
6.10
6.60
3.69
4.69
0.38
0.53
1.27 BSC
1.02
1.78
2.54 BSC
0.20
0.38
2.92
3.43
7.62 BSC
0

10

0.39
1.01

SEATING
PLANE

0.005 (0.13)

T A

SO16W
DW SUFFIX
CASE 751G03
ISSUE B
D
9

NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
3. DIMENSIONS D AND E DO NOT INLCUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.

16X
M

T A

h X 45

14X

0.25

A1

0.25

8X

16

SEATING
PLANE

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15

DIM
A
A1
B
C
D
E
e
H
h
L

MILLIMETERS
MIN
MAX
2.35
2.65
0.10
0.25
0.35
0.49
0.23
0.32
10.15
10.45
7.40
7.60
1.27 BSC
10.05
10.55
0.25
0.75
0.50
0.90
0

7

MC33030

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MC33030/D

This datasheet has been download from:

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