Device Operating
Temperature Range Package

SEMICONDUCTOR
TECHNICAL DATA
CLOSED LOOP
BRUSHLESS MOTOR
ADAPTER
ORDERING INFORMATION
MC33039D
MC33039P TA = – 40° to +85°CSO–8
Plastic DIP
Order this document by MC33039/D
PIN CONNECTIONS
fout
RT/CT
Gnd
Inputs
φ
B
φ
A
φ
A
4
3
2
8
7
6
5
φ
C1
(Top View)
VCC
P SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
1
8
1
8
1
MOTOROLA ANALOG IC DEVICE DATA
  
 
The MC33039 is a high performance closed–loop speed control adapter
specifically designed for use in brushless DC motor control systems.
Implementation will allow precise speed regulation without the need for a
magnetic or optical tachometer. This device contains three input buffers
each with hysteresis for noise immunity, three digital edge detectors, a
programmable monostable, and an internal shunt regulator. Also included is
an inverter output for use in systems that require conversion of sensor
phasing. Although this device is primarily intended for use with the MC33035
brushless motor controller, it can be used cost effectively in many other
closed–loop speed control applications.
•Digital Detection of Each Input Transition for Improved Low
Speed Motor Operation
•TTL Compatible Inputs With Hysteresis
•Operation Down to 5.5 V for Direct Powering from MC33035 Reference
•Internal Shunt Regulator Allows Operation from a Non–Regulated
Voltage Source
•Inverter Output for Easy Conversion between 60°/300° and 120°/240°
Sensor Phasing Conventions
Representative Block Diagram
15 k
–
+
To Rotor
Position
Sensors
VCC
7
Gnd
φ
C
4
φ
A
+20 k
0.3 V
+
–
+
8.25 V
8
RT
fout
5
2R
R
+
R
Delay
QS
1
φ
A
φ
B
6
3
2
CT
Delay
Delay
+
Motorola, Inc. 1996 Rev 0
MC33039
2MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Value Unit
VCC Zener Current IZ(VCC)30 mA
Logic Input Current (Pins 1, 2, 3) IIH 5.0 mA
Output Current (Pins 4, 5), Sink or Source IDRV 20 mA
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ TA = + 85°C
Thermal Resistance, Junction–to–Air PD
RθJA 650
100 mW
°C/W
Operating Junction Temperature TJ+ 150 °C
Operating Ambient Temperature Range TA– 40 to + 85 °C
Storage Temperature Range Tstg – 65 to +
150 °C
ELECTRICAL CHARACTERISTICS (VCC = 6.25 V, RT = 10 k, CT = 22 nF, TA = 25°C, unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
LOGIC INPUTS
Input Threshold Voltage
High State
Low State
Hysteresis
VIH
VIL
VH
2.4
—
0.4
2.1
1.4
0.7
—
1.0
0.9
V
Input Current
High State (VIH = 5.0 V)
φA
φB, φC
Low State (VIL = 0 V)
φA
φB, φC
IIH
IIL
– 40
—
– 190
—
– 60
– 0.3
– 300
– 0.3
– 80
– 5.0
– 380
– 5.0
µA
MONOSTABLE AND OUTPUT SECTIONS
Output Voltage
High State
fout (Isource = 5.0 mA)
φA (Isource = 2.0 mA)
Low State
fout (Isink = 10 mA)
φA (Isink = 10 mA)
VOH
VOL
3.60
4.20
—
—
3.95
4.75
0.25
0.25
4.20
—
0.50
0.50
V
Capacitor CT Discharge Current Idischg 20 35 60 mA
Output Pulse Width (Pin 5) tPW 205 225 245 µs
POWER SUPPLY SECTION
Power Supply Operating Voltage Range (TA = – 40° to + 85°C) VCC 5.5 — VZV
Power Supply Current ICC 1.8 3.9 5.0 mA
Zener Voltage (IZ = 10 mA) VZ7.5 8.25 9.0 V
Zener Dynamic Impedance (∆IZ = 10 mA to 20 mA, f
p
1.0 kHz) Zka—2.0 5.0 Ω
MC33039
3
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Typical Three Phase, Six Step Motor Application
fout Output
Latch
I
Set
I
Input
φ
A Output
φ
C
120
°
Sensor
Electrical
Phasing
Input
φ
B
RT/CT
φ
C
60
°
Sensor
Electrical
Phasing
Input
φ
B
φ
A
φ
A
Vout (AVG)
Constant Motor Speed Increasing Motor
Speed
Vth
≈
0.67 VCC
24060 120 300 7206000 Rotor Electrical Position (Degrees)
180 360 480
OPERATING DESCRIPTION
The MC33039 provides an economical method of
implementing closed–loop speed control of brushless DC
motors by eliminating the need for a magnetic or optical
tachometer. Shown in the timing diagram of Figure 1, the
three inputs (Pins 1, 2, 3) monitor the brushless motor rotor
position sensors. Each sensor signal transition is digitally
detected, OR
i
ed at the Latch
i
Set
i
Input, and causes CT to
discharge. A corresponding output pulse is generated at fout
(Pin 5) of a defined amplitude, and programmable width
determined by the values selected for R T and CT (Pin 6). The
average voltage of the output pulse train increases with
motor speed. When fed through a low pass filter or integrator ,
a DC voltage proportional to speed is generated. Figure 2
shows the proper connections for a typical closed loop
application using the MC33035 brushless motor controller.
Constant speed operation down to 100 RPM is possible with
economical three phase four pole motors.
The φA inverter output (Pin 4) is used in systems where the
controller and motor sensor phasing conventions are not
compatible. A method of converting from either convention to
the other is shown in Figure 3. For a more detailed
explanation of this subject, refer to the text above Figure 39
on the MC33035 data sheet.
The output pulse amplitude VOH is constant with
temperature and controlled by the supply voltage on VCC
(Pin 8). Operation down to 5.5 V is guaranteed over
temperature. For systems without a regulated power supply,
an internal 8.25 V shunt regulator is provided.
MC33039
4MOTOROLA ANALOG IC DEVICE DATA
3
2
1
Delay
Delay
Delay
48
8.25 V
7
SQ
R
0.3 V
+
–
+
–
+
R
2R 15 k
6
5
MC33039P
RT
CT
Enable
Speed
Set
MC33035P
OSC
PWM
EA
–
+
–
+
SQ
R
R
SQ
Thermal
REF
UVLO
+
+
+
Fwd/
Rev
VCC
POS
DEC
Brake
ILIMIT
–
+
Output Buffers
Motor
φ
A
Fault
VMNS
S
N
Assy
Rotor
Figure 2. Typical Closed Loop Speed Control Application
20 k
MC33039
5
MOTOROLA ANALOG IC DEVICE DATA
Figure 3. fout, Pulse Width
versus Timing Resistor Figure 4. fout, Pulse Width Change
versus Temperature
TA , AMBIENT TEMPERATURE (
°
C)RT , TIMING RESIST OR (k
Ω
)0
1.0
10
2.0
0.1
100
20 200
0.01 – 55
– 0.8
0
– 25 + 25 + 50 + 125+ 100+ 75
– 1.6
+ 0.8
+ 1.6
tPW, OUTPUT PULSE WIDTH (ms)
tPW, OUTPUT PULSE WIDTH CHANGE (%)
∆
VCC = 6.25 V
TA = 25
°
C
CT = 220 nF
CT = 22 nF
CT = 2.2 nF
VCC = 6.25 V
RT = 10 k
CT = 22 nF
Figure 5. fout, Pulse Width Change
versus Supply Voltage Figure 6. Supply Current versus
Supply Voltage
0VCC , SUPPLY VOLTAGE (V)
4.0
4.5
+ 4.0
+ 2.0
0
– 2.0
– 4.0 5.5 6.5 7.5 8.5
VCC , SUPPLY VOLTAGE (V) 2.0 6.04.0 8.0 10
8.0
0
12
16
20
ICC , SUPPLY CURRENT (mA)
tPW, OUTPUT PULSE WIDTH CHANGE (%)
∆
TA = 25
°
CPins 1, 2, 3
Connected
together
TA = 25
°
C
TA = 125
°
C
TA = –40
°
C
+ 0.4 0
0
TA , AMBIENT TEMPERATURE (
°
C)
0 + 125
+ 0.6
+ 0.4
+ 0.2
IO , OUTPUT LOAD CURRENT (mA)
4.0 8.0 12 16
+ 0.2
– 4.0
– 2.0
0
0
0
+ 25– 25– 55
–16
– 8.0
+ 8.0
+ 50
+16
+ 75 + 100
– 0.2
Vsat , OUTPUT SATURATION VOLTAGE (V)
Vsat (sink), SINK SATURATION CHANGE (%)
∆
Vsat (SOURCE), SOURCE SATURATION CHANGE (%)
∆
Figure 7. fout, Saturation
versus Load Current Figure 8. fout, Saturation Change
versus Temperature
VCC = 6.25 V
TA = 25
°
C
Source Saturation
(Load to Ground)
VCC
Gnd
Sink Saturation
(Load to VCC)
VCC = 6.25 V
IO = 5.0 mA
∆
Sink Saturation
(Load to VCC)
∆
Source Saturation
(Load to Ground)
MC33039
6MOTOROLA ANALOG IC DEVICE DATA
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
ISSUE N
(SO–8)
OUTLINE DIMENSIONS
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
14
58
F
NOTE 2 –A–
–B–
–T–
SEATING
PLANE
H
J
GDK
N
C
L
M
M
A
M
0.13 (0.005) B M
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A9.40 10.16 0.370 0.400
B6.10 6.60 0.240 0.260
C3.94 4.45 0.155 0.175
D0.38 0.51 0.015 0.020
F1.02 1.78 0.040 0.070
G2.54 BSC 0.100 BSC
H0.76 1.27 0.030 0.050
J0.20 0.30 0.008 0.012
K2.92 3.43 0.115 0.135
L7.62 BSC 0.300 BSC
M––– 10 ––– 10
N0.76 1.01 0.030 0.040
__
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 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
SEATING
PLANE
14
58
C
K
4X P
A0.25 (0.010) MTBSS
0.25 (0.010) MBM
8X D
R
MJ
X 45
_
_
F
–A–
–B–
–T–
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A4.80 5.00 0.189 0.196
B3.80 4.00 0.150 0.157
C1.35 1.75 0.054 0.068
D0.35 0.49 0.014 0.019
F0.40 1.25 0.016 0.049
G1.27 BSC 0.050 BSC
J0.18 0.25 0.007 0.009
K0.10 0.25 0.004 0.009
M0 7 0 7
P5.80 6.20 0.229 0.244
R0.25 0.50 0.010 0.019
____
G
MC33039
7
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
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Opportunity/Af firmative Action Employer .
MC33039
8MOTOROLA ANALOG IC DEVICE DATA
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MC33039/D
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