A3980(2011) View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
Manufacturer
A3980 Datasheet PDF : 18 Pages
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A3980
Automotive DMOS Microstepping Driver
with Translator
Table 3. Step Sequencing Settings
Home microstep position at Step Angle 45º; DIR = H
Full
Step
#
1
2
Half
Step
#
1
2
3
4
1/8
Step
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1/16
Step
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Phase 1
Current
[% ItripMax]
(%)
100.00
Phase 2
Current
[% ItripMax]
(%)
0.00
99.52
9.80
98.08
19.51
95.69
29.03
92.39
38.27
88.19
47.14
83.15
55.56
77.30
63.44
70.71
70.71
63.44
77.30
55.56
83.15
47.14
88.19
38.27
92.39
29.03
95.69
19.51
98.08
9.80
99.52
0.00
100.00
–9.80
99.52
–19.51 98.08
–29.03 95.69
–38.27 92.39
–47.14 88.19
–55.56 83.15
–63.44 77.30
–70.71 70.71
–77.30 63.44
–83.15 55.56
–88.19 47.14
–92.39 38.27
–95.69 29.03
–98.08 19.51
–99.52
9.80
Step
Angle
(º)
0.0
5.6
11.3
16.9
22.5
28.1
33.8
39.4
45.0
50.6
56.3
61.9
67.5
73.1
78.8
84.4
90.0
95.6
101.3
106.9
112.5
118.1
123.8
129.4
135.0
140.6
146.3
151.9
157.5
163.1
168.8
174.4
Full
Step
#
3
4
Half
Step
#
5
6
7
8
1/8
Step
#
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1/16
Step
#
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Phase 1
Current
[% ItripMax]
(%)
–100.00
Phase 2
Current
[% ItripMax]
(%)
0.00
–99.52 –9.80
–98.08 –19.51
–95.69 –29.03
–92.39 –38.27
–88.19 –47.14
–83.15 –55.56
–77.30 –63.44
–70.71 –70.71
–63.44 –77.30
–55.56 –83.15
–47.14 –88.19
–38.27 –92.39
–29.03 –95.69
–19.51 –98.08
–9.80 –99.52
0.00 –100.00
9.80
–99.52
19.51 –98.08
29.03 –95.69
38.27 –92.39
47.14 –88.19
55.56 –83.15
63.44 –77.30
70.71 –70.71
77.30 –63.44
83.15 –55.56
88.19 –47.14
92.39 –38.27
95.69 –29.03
98.08 –19.51
99.52
–9.80
Step
Angle
(º)
180.0
185.6
191.3
196.9
202.5
208.1
213.8
219.4
225.0
230.6
236.3
241.9
247.5
253.1
258.8
264.4
270.0
275.6
281.3
286.9
292.5
298.1
303.8
309.4
315.0
320.6
326.3
331.9
337.5
343.1
348.8
354.4
Allegro MicroSystems, Inc.
7
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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