5-Phase Stepper Motor Driver ICs (Pentagon Connection)
SI-7502
(SLA5011/SLA6503)
sInternal
Block Diagram (Dotted Line)
Auxiliary power
supply
Control power supply
V
b
V
S
Main power supply
V
CC
Variable current
resistor R
X
Excitation signal
Trigger pulse
generator circuit
SI-7502
SLA6503
Reference
voltage
Level shift
current control
unit
Motor
Comparator
amplifier
SLA5011
Current sense
resistor Rs
sEquivalent
Circuit Diagram
SI-7502
24
20
23
19
16
12
15
11
7
8
27
R17
1
R7
R1
Trigger pulse
generator circuit
R4
R3
R6
R12
+
R18
R19
R20
R21
R8
Tr2
Tr3
R9
Tr4
R10
Tr5
R11
Tr6
R22
R13
R23
R14
R24
R15
R25
R16
R26
26
2
R2
4
5
3
R5
Tr1
R27
R28
R29
R30
R31
25
21
22
18
17
13
14
10
6
9
SLA6503
R1
1
R2
12
2
3
4
5
6
7
8
9
10
11
R
1
≅2kΩ
Typ
R
2
≅50Ω
Typ
SLA5011
3
5
7
9
11
2
4
6
8
10
1
12
SI-7502
(SLA5011/SLA6503)
105
Home Index Pages Text
Previous Next
Pages: Home Index