stk672-050-e ON Semiconductor, stk672-050-e Datasheet - Page 12

• Manufacturer Part Number: stk672-050-e
• Description: Thick-film Hybrid Ic Unipolar Constant-current Chopper External Excitation Pwm Circuit With Built-in Microstepping Controller Stepping Motor Driver Sine Wave Drive Output Current 3.0a No Heat Sink*
• Manufacturer: ON Semiconductor

Phase States During Excitation Switching
• Excitation phases before and after excitation mode switching <clockwise direction>
B 24
B 24
B
B
25
24
24
22
26
2W1-2 phase → 2 phase
28
W1-2 phase → 2 phase
28
20
20
1-2 phase → 2 phase
2 phase → 1-2 phase
30
18
17
20
20
28
20
28
20
28
28
16
16
16
16
Excitation phase immediately before setting the excitation mode
A
A
A
A
A
0
A
0
A
0
A
0
12
12
4
12
12
4
4
4
14
2
1
12
4
4
12
10
Excitation phase according to the first clock input pulse after changing the excitation mode setting (M1 and M2)
6
9
8
8
8
8
B
B
B
B
B
B
B
B
24
24
22
26
22
22
26
2W1-2 phase → 1-2 phase
27
W1-2 phase → 1-2 phase
1-2 phase → W1-2 phase
28
20
2 phase → W1-2 phase
28
20
STK672-050-E
19
18
18
30
30
24
30
24
20
20
31
28
20
20
28
28 0 4
28 0 4
16
16
16
A
A
A
A
16
16
0
A
A
0
A
A
12
15
12
4
12
12
14
4
14
14
8
8
2
2
3
4
12
4
12
11
10
6
10
6
6
5
8
8
B
B
B
B
B 24
B
B
B
23
25
25
25
23
2W1-2 phase → W1-2 phase
26
22
W1-2 phase → 2W1-2 phase
27
1-2 phase → 2W1-2 phase
21
21
21
21
27
2 phase → 2W1-2 phase
28
20
19
29
29
19
29
29
30 31 0 1 2
18
31
24
22
17
24
22
26
20
24
26
20
20
28
18
28
18
20
17
28
17
28 0 4
17
16
A
30 0 2
16
A
30
16 14
A
A
16
14
0
A
A
A
A
12
12
2
12
12
15
15
1
4
4
4
10
10
1
6
6
14
8
8
8
3
13
13
13
13
3
12
4
5
5
5
11
5
11
10
6
No.5228-12/19
7
9
9
7
9
8
B
B
B
B
A12412