Closed-Loop Brushless Motor Adapter

MC33039, NCV33039
Closed Loop Brushless
Motor Adapter
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.
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MARKING
DIAGRAMS
PDIP−8
P SUFFIX
CASE 626
1
1
MC33039P
AWL
YYWWG
Features
• 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
Pb−Free Packages are Available
1
1
A
WL, L
YY, Y
WW, W
G or G
φA
Inputs
8
RT
6
8.25 V
+
+
+
φA
3
CT
R
20 k
2R
Delay
To Rotor
Position
Sensors
φB
+
15 k
S Q
R
1
+
Delay
φC 1
8 VCC
φB 2
7 GND
φA 3
6 RT/CT
φA 4
5 fout
(Top View)
fout
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
2
Delay
φC
5
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
VCC
4
33039
ALYW
G
SOIC−8
D SUFFIX
CASE 751
+
0.3 V
7
GND
Representative Block Diagram
© Semiconductor Components Industries, LLC, 2012
June, 2012 − Rev. 6
1
Publication Order Number:
MC33039/D
MC33039, NCV33039
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
30
mA
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
RqJA
650
100
mW
°C/W
Operating Junction Temperature
TJ
+150
°C
Operating Ambient Temperature Range
MC33039
NCV33039
TA
Storage Temperature Range
Tstg
VCC Zener Current
I
Logic Input Current (Pins 1, 2, 3)
Z(V
CC
)
°C
−40 to +85
−40 to +125
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS (VCC = 6.25 V, RT = 10 k, CT = 22 nF, TA = 25°C, unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
VIH
VIL
VH
2.4
−
0.4
2.1
1.4
0.7
−
1.0
0.9
Unit
LOGIC INPUTS
V
Input Threshold Voltage
High State
Low State
Hysteresis
Input Current
High State (VIH = 5.0 V)
φA
φB, φC
Low State (VIL = 0 V)
φA
φB, φC
IIH
mA
− 40
−
− 60
− 0.3
− 80
− 5.0
− 190
−
− 300
− 0.3
− 380
− 5.0
IIL
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
V
3.60
4.20
3.95
4.75
4.20
−
−
−
0.25
0.25
0.50
0.50
VOL
Capacitor CT Discharge Current
Idischg
20
35
60
mA
tPW
205
225
245
ms
Power Supply Operating Voltage Range
MC33039 (TA = −40° to +85°C)
NCV33039 (TA = −40° to +125°C)
VCC
5.5
−
VZ
V
Power Supply Current
ICC
1.8
3.9
5.0
mA
Zener Voltage (IZ = 10 mA)
VZ
7.5
8.25
9.0
V
⎥ Zka⎥
−
2.0
5.0
W
Output Pulse Width (Pin 5)
POWER SUPPLY SECTION
Zener Dynamic Impedance (DIZ = 10 mA to 20 mA, f p 1.0 kHz)
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2
MC33039, NCV33039
Rotor Electrical Position (Degrees)
0
60
120
180
240
300
360
480
600
720
φA
60° Sensor
Electrical
Phasing
Input
φB
φC
φA
120° Sensor
Electrical
Phasing
Input
φB
φC
φA Output
Latch ISetI Input
Vth ≈ 0.67 VCC
RT/CT
Vout (AVG)
fout Output
Constant Motor Speed
Increasing Motor
Speed
Figure 1. Typical Three Phase, Six Step Motor Application
OPERATING DESCRIPTION
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.
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, ORied at the Latch iSeti 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 RT 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
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3
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4
1
2
3
20 k
Delay
Delay
Delay
φA
4
7
8.25V
8
R
S Q
MC33039P
+
2R
R
15k
0.3V
+
-
+
-
5
6
CT
RT
Speed
Set
Enable
VCC
Fwd/
Rev
Figure 2. Typical Closed Loop Speed Control Application
OSC
EA
MC33035P
+
-
REF
+
PWM
UVLO
R
S
S
R
Q
Q
Thermal
+
+
+
POS
DEC
+
-
Brake
ILIMIT
Fault
VM
S
N
S
Motor
Assy N
Rotor
MC33039, NCV33039
Output Buffers
Δ t PW , OUTPUT PULSE WIDTH CHANGE (%)
MC33039, NCV33039
VCC = 6.25 V
TA = 25°C
10
CT = 220 nF
1.0
CT = 22 nF
0.1
CT = 2.2 nF
0.01
2.0
20
RT , TIMING RESISTOR (kW)
200
+1.6
VCC = 6.25 V
RT = 10 k
CT = 22 nF
+0.8
0
-0.8
-1.6
- 55
- 25
Δ t PW , OUTPUT PULSE WIDTH CHANGE (%)
Figure 3. fout, Pulse Width
versus Timing Resistor
+ 100
+ 125
Figure 4. fout, Pulse Width Change
versus Temperature
+ 4.0
20
ICC , SUPPLY CURRENT (mA)
TA = 25°C
+ 2.0
0
- 2.0
- 4.0
4.5
Pins 1, 2, 3
Connected
together
16
12
8.0
TA = -40°C
4.0
TA = 125°C
0
5.5
6.5
7.5
VCC , SUPPLY VOLTAGE (V)
8.5
0
2.0
Figure 5. fout, Pulse Width Change
versus Supply Voltage
0
VCC
- 2.0
VCC = 6.25 V
TA = 25°C
Source Saturation
(Load to Ground)
- 4.0
+ 0.4
Sink Saturation
(Load to VCC)
+ 0.2
GND
0
0
4.0
8.0
12
IO , OUTPUT LOAD CURRENT (mA)
TA = 25°C
4.0
6.0
VCC , SUPPLY VOLTAGE (V)
8.0
10
Figure 6. Supply Current versus
Supply Voltage
Δ V sat (sink), SINK SATURATION CHANGE (%)
V sat , OUTPUT SATURATION VOLTAGE (V)
0
+ 25
+ 50
+ 75
TA , AMBIENT TEMPERATURE (°C)
16
ΔV sat (SOURCE), SOURCE SATURATION CHANGE (%)
t PW , OUTPUT PULSE WIDTH (ms)
100
+ 0.6
+16
VCC = 6.25 V
IO = 5.0 mA
+ 0.4
+8.0
+ 0.2
0
D Sink Saturation
(Load to VCC)
D Source Saturation
(Load to Ground)
0
- 8.0
- 0.2
-16
- 55
Figure 7. fout, Saturation
versus Load Current
- 25
0
+ 25
+ 50
+ 75
TA , AMBIENT TEMPERATURE (°C)
+ 100
Figure 8. fout, Saturation Change
versus Temperature
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5
+ 125
MC33039, NCV33039
ORDERING INFORMATION
Device
Operating Temperature Range
Package
MC33039D
98 Units / Rail
MC33039DG
MC33039DR2
MC33039DR2G
SOIC−8
TA = −40°C to +85°C
2500 / Tape & Reel
MC33039P
MC33039PG
NCV33039DR2*
NCV33039DR2G*
Shipping†
TA = −40°C to +125°C
PDIP−8
50 Units / Rail
SOIC−8
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV33039: Tlow = −40C, Thigh = +125C. Guaranteed by design. NCV prefix is for automotive and other applications requiring
site and change control.
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6
MC33039, NCV33039
PACKAGE DIMENSIONS
P SUFFIX
CASE 626−05
ISSUE M
D
A
D1
E
8
5
E1
1
4
NOTE 5
F
c
E2
END VIEW
TOP VIEW
NOTE 3
e/2
A
L
A1
C
SEATING
PLANE
E3
e
8X
SIDE VIEW
b
0.010
M
C A
END VIEW
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7
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: INCHES.
3. DIMENSION E IS MEASURED WITH THE LEADS RESTRAINED PARALLEL AT WIDTH E2.
4. DIMENSION E1 DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
DIM
A
A1
b
C
D
D1
E
E1
E2
E3
e
L
INCHES
NOM
MAX
−−−− 0.210
−−−− −−−−
0.018 0.022
0.010 0.014
0.365 0.400
−−−− −−−−
0.310 0.325
0.250 0.280
0.300 BSC
−−−−
−−−− 0.430
0.100 BSC
0.115 0.130 0.150
MIN
−−−−
0.015
0.014
0.008
0.355
0.005
0.300
0.240
MILLIMETERS
MIN
NOM
MAX
−−−−
−−−−
5.33
0.38
−−−− −−−−
0.35
0.46
0.56
0.20
0.25
0.36
9.02
9.27 10.02
0.13
−−−− −−−−
7.62
7.87
8.26
6.10
6.35
7.11
7.62 BSC
−−−−
−−−− 10.92
2.54 BSC
2.92
3.30
3.81
MC33039, NCV33039
PACKAGE DIMENSIONS
SOIC−8 NB
CASE 751−07
ISSUE AK
−X−
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION 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.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
A
8
5
S
B
0.25 (0.010)
M
Y
M
1
4
−Y−
K
G
C
N
DIM
A
B
C
D
G
H
J
K
M
N
S
X 45 _
SEATING
PLANE
−Z−
0.10 (0.004)
H
D
0.25 (0.010)
M
Z Y
S
X
M
J
S
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.33
0.51
1.27 BSC
0.10
0.25
0.19
0.25
0.40
1.27
0_
8_
0.25
0.50
5.80
6.20
INCHES
MIN
MAX
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.050 BSC
0.004
0.010
0.007
0.010
0.016
0.050
0 _
8 _
0.010
0.020
0.228
0.244
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
4.0
0.155
0.6
0.024
1.270
0.050
SCALE 6:1
mm Ǔ
ǒinches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
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reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
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limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
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MC33039/D
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