A3986
Dual Full-Bridge MOSFET Driver
with Microstepping Translator
Table 3. Step Sequencing Settings
Home microstep position at Step Angle 45º; DIR = H
Full
Step
(#)
Half
Step
(#)
1
1/4
Step
(#)
1
1/16
Phase 2
Phase 1
Step
Step
Current
Current
Angle
(#) (% I
TRIP(max)
) (% I
TRIP(max)
)
(°)
1
2
3
4
2
5
6
7
8
1
2
3
9
10
11
12
4
13
14
15
16
3
5
17
18
19
20
6
21
22
23
24
2
4
7
25
26
27
28
8
29
30
31
32
5
9
33
0.00
9.38
18.75
29.69
37.50
46.88
56.25
64.06
70.31
76.56
82.81
87.50
92.19
95.31
98.44
100.00
100.00
100.00
98.44
95.31
92.19
87.50
82.81
76.56
70.31
64.06
56.25
46.88
37.50
29.69
18.75
9.38
0.00
100.00
100.00
98.44
95.31
92.19
87.50
82.81
76.56
70.31
64.06
56.25
46.88
37.50
29.69
18.75
9.38
0.00
–9.38
–18.75
–29.69
–37.50
–46.88
–56.25
–64.06
–70.31
–76.56
–82.81
–87.50
–92.19
–95.31
–98.44
–100.00
–100.00
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
180.0
1
1
16
4
8
15
14
7
13
12
3
6
11
10
Full
Step
(#)
Half
Step
(#)
5
1/4
Step
(#)
9
1/16
Phase 2
Phase 1
Step
Step
Current
Current
Angle
(#) (% I
TRIP(max)
) (% I
TRIP(max)
)
(°)
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
1
0.00
–9.38
–18.75
–29.69
–37.50
–46.88
–56.25
–64.06
–70.31
–76.56
–82.81
–87.50
–92.19
–95.31
–98.44
–100.00
–100.00
–100.00
–98.44
–95.31
–92.19
–87.50
–82.81
–76.56
–70.31
–64.06
–56.25
–46.88
–37.50
–29.69
–18.75
–9.38
0.00
–100.00
–100.00
–98.44
–95.31
–92.19
–87.50
–82.81
–76.56
–70.31
–64.06
–56.25
–46.88
–37.50
–29.69
–18.75
–9.38
0.00
9.38
18.75
29.69
37.50
46.88
56.25
64.06
70.31
76.56
82.81
87.50
92.19
95.31
98.44
100.00
100.00
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
360.0
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
7
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
