DRV8880_15 Datasheet, PDF (16/48 Pages) Texas Instruments – DRV8880 2-A Stepper Motor Driver With AutoTune™

DRV8880
SLVSD18A – JUNE 2015 – REVISED JULY 2015
www.ti.com
FULL
STEP
1
2
3
1/2 STEP
1
2
3
4
5
6
Table 2. Microstepping Relative Current Per Step
1/4 STEP
1
2
3
4
5
6
7
8
9
10
11
12
1/8 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
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
ELECTRICAL ANGLE
(°)
0.000°
5.625°
11.250°
16.875°
22.500°
28.125°
33.750°
39.375°
45.000°
50.625°
56.250°
61.875°
67.500°
73.125°
78.750°
84.375°
90.000°
95.625°
101.250°
106.875°
112.500°
118.125°
123.750°
129.375°
135.000°
140.625°
146.250°
151.875°
157.500°
163.125°
168.750°
174.375°
180.000°
185.625°
191.250°
196.875°
202.500°
208.125°
213.750°
219.375°
225.000°
230.625°
236.250°
241.875°
247.500°
253.125°
258.750°
AOUT CURRENT
(% full-scale)
0%
10%
20%
29%
38%
47%
56%
63%
71%
77%
83%
88%
92%
96%
98%
100%
100%
100%
98%
96%
92%
88%
83%
77%
71%
63%
56%
47%
38%
29%
20%
10%
0%
–10%
–20%
–29%
–38%
–47%
–56%
–63%
–71%
–77%
–83%
–88%
–92%
–96%
–98%
BOUT CURRENT
(% full-scale)
100%
100%
98%
96%
92%
88%
83%
77%
71%
63%
56%
47%
38%
29%
20%
10%
0%
–10%
–20%
–29%
–38%
–47%
–56%
–63%
–71%
–77%
–83%
–88%
–92%
–96%
–98%
–100%
–100%
–100%
–98%
–96%
–92%
–88%
–83%
–77%
–71%
–63%
–56%
–47%
–38%
–29%
–20%
16
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