5-Phase Stepper Motor Driver ICs (Pentagon Connection)
SI-7502
(SLA5011/SLA6503)
sMotor
Connection
The 5-phase stepper motor supports various driving systems
and the motor connection varies depending on the driving sys-
tem used.
Use of the motor with some driving systems may be restricted
by patents. Therefore, be sure to ask the motor manufacturer
about the motor connection and driving system to be used.
sThermal
design
The driver (SLA5011/SLA6503) dissipation varies depending on
a driving system used even if the output currents (control cur-
rent) are the same. Therefore, measure the temperature rise of
the driver under the actual operating conditions to determine
the size of the heatsink.
Figure E shows an SLA5011/SLA6503 derating curve. This de-
rating curve indicates T
j
=150°C; however, when using this de-
vice, allow sufficient margin when selecting a heatsink so that
T
C
≤100°C
(AI FIN temperature on the back of the SLA) is ob-
tained.
Fig. E SLA5011/SLA6503 Derating curve
(W)
15
10
1
0
×
Power dissipation P
T
mm
×
2
00
10
50
×
5
AI
0
×
FI
N
2m
5
m
AI
N0
FI
FIN
N
0
−40
0
50
100
150 (°C)
Ambient temperature Ta
SI-7502
sHandling
Precautions
Refer to the product specifications.
Solvents- Do not use the following solvents:
Substances that can dissolve
the package
Substances that can weaken
the package
Chlorine-based solvents: Trichloroethylene, Trichloroethane, etc.
Aromatic hydrogen compounds: Benzene, Toluene, Xylene, etc.
Keton and Acetone group solvents
Gasoline, Benzine, Kerosene, etc.
108
SI-7502
(SLA5011/SLA6503)