SLA7022 [SANKEN]
2-Phase Stepper Motor Unipolar Driver ICs; 2相步进电机单极驱动器IC
| 型号： | SLA7022 |
| 厂家： | 
SANKEN ELECTRIC |
| 描述： | 2-Phase Stepper Motor Unipolar Driver ICs |
| 文件： | 总7页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
2-Phase Excitation
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
2-Phase Stepper Motor Unipolar Driver ICs
ꢀAbsolute Maximum Ratings
(Ta
=25°C)
Ratings
Parameter
Symbol
Units
SLA7022MU
SLA7029M
SMA7022MU
SMA7029M
Motor supply voltage
FET Drain-Source voltage
Control supply voltage
TTL input voltage
V
CC
46
100
46
7
V
V
VDSS
V
S
V
V
IN
V
Reference voltage
Output current
V
REF
2
V
I
O
1
4.5 (Without Heatsink)
35 (T =25°C)
1.5
1
4.0 (Without Heatsink)
28(T =25°C)
1.5
A
P
D1
D2
W
W
°C
°C
Power dissipation
P
C
C
Channel temperature
Storage temperature
T
ch
+150
T
stg
−40 to +150
ꢀElectrical Characteristics
(Ta=25°C)
Ratings
Parameter
Symbol
SLA7022MU
SLA7029M
SMA7022MU
SMA7029M
Units
min
typ
10
max
15
min
typ
10
max
15
min
typ
10
max
15
min
typ
10
max
I
S
15
Control supply current
mA
V
Condition
V
S
=44V
V
S
=44V
V
S
=44V
24
V
S
=44V
Control supply voltage
FET Drain-Source
voltage
V
S
10
24
44
10
24
44
10
44
10
24
44
V
DSS
100
100
100
100
V
Condition
V
V
V
S
=44V, IDSS=250 µA
V
V
V
S
=44V, IDSS=250 µA
V
S
=44V, IDSS=250 µA
V
S
=44V, IDSS=250 µA
V
DS
0.85
0.6
0.85
0.6
FET ON voltage
V
Condition
I
D
=1A, V
S
=14V
I
D
=1A, V
S
=14V
I
D
=1A, V
S=14V
I
D
=1A, V =14V
S
I
DSS
4
4
4
=44V
1.2
4
FET drain leakage current
mA
V
Condition
DSS=100V, V
S
=44V
DSS=100V, V
S
=44V
V
DSS=100V, V
S
V
DSS=100V, V
S
=44V
FET diode forward
voltage
V
SD
1.2
1.1
1.1
Condition
I
D
=1A
I
D
=1A
I
D
=1A
I =1A
D
I
IH
40
40
40
40
µ A
mA
Condition
IH=2.4V, V
S
=44V
IH=2.4V, V
S
=44V
V
IH=2.4V, V
S
=44V
−0.8
=44V
V
IH=2.4V, V
S
=44V
−0.8
=44V
TTL input current
I
IL
−0.8
−0.8
Condition
V
IL=0.4V, V
S=44V
V
IL=0.4V, V
S=44V
V
IL=0.4V, V
S
V
IL=0.4V, V
S
VIH
2
2
2
2
TTL input voltage
(Active High)
Condition
I
D
=1A
I
D
=1A
I
D
=1A
I =1A
D
V
V
VIL
0.8
0.8
0.8
0.8
0.8
0.8
Condition
V
DSS=100V
DSS=100V
V
DSS=100V
DSS=100V
V
DSS=100V
DSS=100V
V
DSS=100V
DSS=100V
VIH
2
2
2
2
TTL input voltage
(Active Low)
Condition
V
V
V
V
VIL
0.8
0.8
Condition
I
D
=1A
0.5
=24V, I
0.7
I
D
=1A
0.5
=24V, I
I
D
=1A
0.5
=24V, I
0.7
I
D
=1A
0.5
=24V, I
0.7
T
r
Condition
V
S
D
=0.8A
V
S
D
D
D
=1A
=1A
=1A
V
S
D
=0.8A
V
V
V
S
D
D
D
=1A
=1A
=1A
T
stg
0.7
=24V, I
0.1
Switching time
µ s
Condition
VS
=24V, I
D
=0.8A
V
S
V
S
=24V, I
D
=0.8A
S
=24V, I
T
f
0.1
0.1
0.1
Condition
VS
=24V, I
D
=0.8A
V
S
=24V, I
V
S
=24V, I
D
=0.8A
S
=24V, I
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
5
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
ꢀInternal Block Diagram
6
1
5
8
14
10
15
1, 6, 10, 15pin
Description of pins
Excitation input
Reg
Reg
Active H
OUT A
OUT A
OUT B
OUT B
Active L
1pin
6pin
10pin
15pin
OUT A
OUT A
OUT B
OUT B
+
+
+
+
–
–
–
–
7
2
3
4
12 13 11
9
ꢀDiagram of Standard External Circuit (Recommended Circuit Constants)
Excitation signal time chart
2-phase excitation
VCC (46V max)
clock
0
1
2
3
0
1
+
INA
INB
H
L
H
H
L
L
L
H
L
H
H
H
1-2 phase excitation
Vb (5V)
8
VS
1
6
10 15
clock
INA
tdA
0
H
L
L
L
1
2
H
L
3
H
H
H
L
4
L
L
H
L
5
L
6
L
L
L
L
7
L
H
L
L
0
H
L
L
L
1
2
H
L
3
H
H
H
L
H
L
H
L
r
1
5
r3
r
4
INA
INA
INB
L
2
INB
tdB
L
H
L
H
H
L
H
L
TdA
TdB
14
INB
GB
H
H
11
C1
C2
r
ꢀꢀtdA and tdB are signals before the inverter stage.
2
RSA REFA REFB RSB
13
GA
4
r1 : 510Ω
7
3
9
12
r2 : 100Ω (VR)
r3 : 47kΩ
C3
C4
Rs
Rs
r4 : 47kΩ
r5 : 2.4kΩ
r6 : 2.4kΩ
r5
r6
Open
collector
C1 : 330 to 500pF
C2 : 330 to 500pF
C3 : 2200pF
C4 : 2200pF
tdA
tdB
(1Rtos2:W1) .8Ω typ(7022MU)
1Ω typ(7029M)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
6
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
ꢀExternal Dimensions SLA7022MU/SLA7029M
(Unit: mm)
31±0.2
24.4±0.2
16.4±0.2
Epoxy resin package
φ3.2±0.15
φ3.2±0.15×3.8
4.8±0.2
1.7±0.1
Part No.
Lot No.
2.45±0.2
R-End
+0.2
0.65
–0.1
2.2±0.4
+0.2
1.15
–0.1
+0.2
–0.1
+0.2
–0.1
+0.2
6.3±0.6
0.65
1.15
0.55
–0.1
7.5±0.6
4±0.7
14×P2.03±0.4=28.42±0.8
14×P2.03±0.7=28.42±1.0
31.3±0.2
1 2 3 ·
· · · · · · 15
123·
·
·
·
·
·
· 15
Forming No. No.853
Forming No. No.855
ꢀExternal Dimensions SMA7022MU/SMA7029MA
(Unit: mm)
Epoxy resin package
4±0.2
31±0.2
2.5±0.2
Lot No.
1.45±0.15
Part No.
0.62±0.1
1.16±0.15
1.2±0.1
(5.9)
(7.5)
+0.2
+0.2
0.65
1.16
–0.1
0.55
–0.1
+0.2
–0.1
P2.03±0.1×14=28.42
4±0.7
P2.03±0.1×14=28.42
31.3+0.2
123 ·
· · · · · · 15
1 2 3 ·
· · · · · · 15
Forming No. No.1054
Forming No. No.1055
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
7
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
Application Notes
Fig. 1 Waveform of coil current (Phase A excitation ON)
ꢀDetermining the Output Current
Fig. 1 shows the waveform of the output current (motor coil cur-
rent). The method of determining the peak value of the output
current (IO) based on this waveform is shown below.
(Parameters for determining the output current IO)
Vb: Reference supply voltage
I
O
Phase A
0
r1,r2: Voltage-divider resistors for the reference supply voltage
RS: Current sense resistor
Phase A
(1) Normal rotation mode
IO is determined as follows when current flows at the maximum
level during motor rotation. (See Fig.2.)
Fig. 2 Normal mode
Vb
r2
................................................................
(1)
IO
•
r1+r2
RS
Vb(5V)
r6
r5
(2) Power down mode
r1
The circuit in Fig.3 (rx and Tr) is added in order to decrease the
coil current. IO is then determined as follows.
3,(13)
r2
C3
Vb
1
.........................................................
(2)
7,(9)
IOPD
•
r1(r2+rX)
r2 • rX
RS
1+
RS
Equation (2) can be modified to obtain equation to determine rx.
1
rX=
1
1
Vb
−1
−
Fig. 3 Power down mode
r1
r2
Rs • IOPD
Vb(5V)
Fig. 4 and 5 show the graphs of equations (1) and (2) respec-
tively.
r6
r5
r1
3,(13)
rx
r2
7,(9)
C3
Power down
signal
Tr
RS
Fig. 4 Output current IO vs. Current sense resistor RS
Fig. 5 Output current IOPD vs. Variable current sense resistor rx
4
2.0
RS =0.5Ω
3
1.5
r
2
Vb
·
I
O
=
1
Vb
RS
IOPD=
·
r
1+r
2
RS
r
(r2+rX)
r2 · rX
1+1
r
r
r
1
2
x
=510Ω
=100Ω
=∞
2
1
0
RS =0.8Ω
RS =1Ω
1.0
0.5
0
r
1
=510Ω
=100Ω
r2
Vb=5V
Vb=5V
0
200 400 600 800 1000 1200
Variable current sense resistor r (Ω)
0
1
2
3
4
Current sense resistor RS (Ω)
X
(NOTE)
Ringing noise is produced in the current sense resistor RS when
the MOSFET is switched ON and OFF by chopping. This noise
is also generated in feedback signals from RS which may there-
fore cause the comparator to malfunction. To prevent chopping
malfunctions, r5(r6) and C3(C4) are added to act as a noise filter.
However, when the values of these constants are increased,
the response from RS to the comparator becomes slow. Hence
the value of the output current IO is somewhat higher than the
calculated value.
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
8
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
Fig. 6 Chopper frequency vs. Motor coil resistance
ꢀDetermining the chopper frequency
Determining TOFF
The SLA7000M and SMA7000M series are self-excited chop-
pers. The chopping OFF time TOFF is fixed by r3/C1 and r4/C2
connected to terminal Td.
60
15
50
TOFF can be calculated using the following formula:
40
µ
47kΩ
=
r
r
3C
OFF =12
=1Ω
1
4C
2
20
=
500pF
2
2
TOFF −r3 • C1rn (1−
=−r4 • C2rn (1−
)
T
R
L
µ
s
30
20
10
0
25
30
35
40
Vb
Vb
S
m
=1~3ms
m
R
The circuit constants and the TOFF value shown below are rec-
ommended.
TOFF = 12µs at r3=47kΩ, C1=500pF, Vb=5V
0
2
4
6
8
10
12 14
16
Motor coil resistance Rm (Ω)
ꢀChopper frequency vs. Supply voltage
ꢀChopper frequency vs. Output current
50
40
30
50
40
30
Motor : 23LM-C202
CC=24V
=1Ω
Motor : 23LM-C202
V
R
I
O
= 0.8A at VCC=24V
S
RS=1Ω
20
10
0
20
10
0
0
0.2
0.4
0.6
O (A)
0.8
1.0
0
10
20
30
CC (V)
40
50
I
V
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
9
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
ꢀThermal Design
(2)The power dissipation Pdiss is obtained using the following formula.
An outline of the method for calculating heat dissipation is shown below.
(1)Obtain the value of PH that corresponds to the motor coil
current IO from Fig. 7 "Heat dissipation per phase PH vs. Out-
put current IO."
2-phase excitation: Pdiss 2PH+0.015×VS (W)
3
2
1-2 phase excitation: Pdiss
PH+0.015×VS (W)
(3)Obtain the temperature rise that corresponds to the calcu-
lated value of Pdiss from Fig. 8 "Temperature rise."
Fig. 7 Heat dissipation per phase PH vs. Output current IO
SLA7022MU, ASMA7022MU
SLA7029M, SMA7029M
1.2
1.2
1
1.0
0.8
0.8
36V
Motor : 23LM-C202
Holding mode
Motor : 23LM-C004
Holding mode
0.6
0.6
0.4
0.2
0
0.4
0.2
0
0
0.2
0.4
0.6
0.8
1.0
0
0.2
0.4
0.6
0.8
1.0
Output current I
O
(A)
Output current
IO (A)
Fig. 8 Temperature rise
SLA7000M series
SMA7000M series
150
100
50
150
100
50
Tj
Tj
∆
∆
TC
∆
TC
Natural cooling
Without heatsink
∆
Natural cooling
Without heatsink
0
0
0
1
2
3
4
5
0
1
2
3
4
Total Power (W)
Total Power (W)
Thermal characteristics
SLA7022MU
SLA7029M
35
30
25
20
15
10
5
Without heatsink
Natural cooling
Without heatsink
Natural cooling
30
25
20
15
10
5
TC ( 4 pin)
TC ( 4 pin)
Motor : PH265-01B
Motor current I =0.8A
=25°C
CC=24V, V
2-phase excitation
Motor : PH265-01B
Motor current I =0.8A
=25°C
CC=24V, V
2-phase excitation
O
O
T
a
T
a
V
S=24V
V
S=24V
0
200
0
200
500
1K
500
Response frequency (pps)
1K
Response frequency (pps)
SMA7022MU
SMA7029MU
35
30
25
20
15
10
5
30
25
20
15
10
5
Without heatsink
Natural cooling
Without heatsink
Natural cooling
T
C
( 4 pin)
TC ( 4 pin)
Motor : PH265-01B
Motor current I =0.8A
=25°C
CC=24V, V
2-phase excitation
Motor : PH265-01B
Motor current I =0.8A
=25°C
CC=24V, V
2-phase excitation
O
O
T
a
T
a
V
S=24V
V
S=24V
0
200
0
500
1K
200
500
1K
Response frequency (pps)
Response frequency (pps)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
10
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
ꢀSupply Voltage VCC vs. Supply Current ICC
SLA7022MU, SMA7022MU
SLA7029M, SMA7029M
500
500
400
300
200
100
0
400
Motor : 23LM-C202
Motor : 23LM-C004
1-phase excitation
Holding mode
300
1-phase excitation
Holding mode
IO : Output current
IO : Output current
200
100
0
IO=1A
IO=1A
0.4A
0.2A
0.5A
0.2A
0
10
20
30
40
50
0
10
20
30
40
50
Supply voltage VCC (V)
Supply voltage VCC (V)
ꢀTorque Characteristics
SLA7022MU, SMA7022MU
SLA7029M, SMA7029M
2.0
1.5
1.0
0.5
0
2.0
1.5
1.0
0.5
0
Motor : 23LM-C202
Output current I =0.8A
Motor : PX244-02
Output current I =0.6A
Motor supply voltage VCC =24V
2-phase excitation
O
O
Motor supply voltage VCC =24V
2-phase excitation
100
500
1K
5K
100
500
1K
5K
Response frequency (pps)
Response frequency (pps)
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
11
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