參數(shù)資料
型號(hào): SLA7022MU
廠(chǎng)商: SANKEN ELECTRIC CO LTD
元件分類(lèi): 運(yùn)動(dòng)控制電子
英文描述: 2-Phase Stepper Motor Unipolar Driver ICs
中文描述: STEPPER MOTOR CONTROLLER, 1 A, ZFM15
封裝: ZIP-15
文件頁(yè)數(shù): 5/7頁(yè)
文件大?。?/td> 77K
代理商: SLA7022MU
9
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
SLA7022MU/SLA7029M/SMA7022MU/SMA7029M
2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation)
I
Determining the chopper frequency
Determining T
OFF
The SLA7000M and SMA7000M series are self-excited chop-
pers. The chopping OFF time T
OFF
is fixed by r
3
/C
1
and r
4
/C
2
connected to terminal Td.
T
OFF
can be calculated using the following formula:
2
V
b
The circuit constants and the T
OFF
value shown below are rec-
ommended.
T
OFF
= 12
μ
s at r
3
=47k
, C
1
=500pF, V
b
=5V
60
50
40
30
20
10
00
2
4
6
8
10 12
14
16
15
20
25
30
35
40
Motor coil resistance R
m
(
)
O
O
V
CC
=24V
V
CC
=36V
C
T
OFF
=12 s
R
S
=1
L
m
=1~3ms
R
m
r
C
1
C
2
μ
47k
μ
Fig. 6 Chopper frequency vs. Motor coil resistance
I
Chopper frequency vs. Supply voltage
0
f
V
CC
(V)
50
40
30
20
10
0
10
20
30
40
50
Motor : 23LM-C202
I
O
= 0.8A at V
CC
=24V
R
S
=1
I
Chopper frequency vs. Output current
0
f
I
O
(A)
50
40
30
20
10
0
0.2
0.4
0.6
0.8
1.0
Motor : 23LM-C202
V
CC
=24V
R
S
=1
T
OFF
r
3
C
1 n
(1
=
r
4
C
2
n
(1
)
r
2
V
b
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