A4975 Datasheet, PDF (10/13 Pages) Allegro MicroSystems – Full-Bridge PWM Microstepping Motor Driver

A4975
Full-Bridge PWM Microstepping Motor Driver
Table 4 — Step Sequencing
Full
Step
1
2
3
4
Half Quarter Eighth
Step Step Step
1
1
1
2
2
3
4
2
3
5
6
4
7
8
3
5
9
10
6
11
12
4
7
13
14
8
15
16
5
9
17
18
10
19
20
6
11
21
22
12
23
24
7
13
25
26
14
27
28
8
15
29
30
16
31
32
Bridge A
PHASE_A D_2A
D_1A
D_0A
H
H
L
L
H
L
H
H
H
L
H
L
H
L
L
H
X
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
L
H
L
L
L
H
L
H
L
H
H
L
L
H
H
H
L
H
H
H
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
X
L
L
L
H
L
L
H
H
L
H
L
H
L
H
H
H
H
L
L
H
H
L
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
L
H
Bridge B
I_LOADA PHASE_B D_2B
D_1B
D_0B
70.7%
H
H
L
L
55.5%
H
H
L
H
38.2%
H
H
H
L
19.5%
H
H
H
H
0%
H
H
H
H
-19.5%
H
H
H
H
-38.2%
H
H
H
L
-55.5%
H
H
L
H
-70.7%
H
H
L
L
-83.1%
H
L
H
H
-92.4%
H
L
H
L
-100%
H
L
L
H
-100%
X
L
L
L
-100%
L
L
L
H
-92.4%
L
L
H
L
-83.1%
L
L
H
H
-70.7%
L
H
L
L
-55.5%
L
H
L
H
-38.2%
L
H
H
L
-19.5%
L
H
H
H
0%
L
H
H
H
19.5%
L
H
H
H
38.2%
L
H
H
L
55.5%
L
H
L
H
70.7%
L
H
L
L
83.1%
L
L
H
H
92.4%
L
L
H
L
100%
L
L
L
H
100%
X
L
L
L
100%
H
L
L
H
92.4%
H
L
H
L
83.1%
H
L
H
H
I_LOADB
70.7%
83.1%
92.4%
100%
100%
100%
92.4%
83.1%
70.7%
55.5%
38.2%
19.5%
0%
-19.5%
-38.2%
-55.5%
-70.7%
-83.1%
-92.4%
-100%
-100%
-100%
-92.4%
-83.1%
-70.7%
-55.5%
-38.2%
-19.5%
0%
19.5%
38.2%
55.5%
Allegro MicroSystems, Inc.
10
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com