Datasheet

DRV101
17
SBVS008B
www.ti.com
FIGURE 19. Three-Phase Stepper Motor Driver Provides High-Stepping Torque.
DRV101
DRV101
DRV101
Phase 1
Stepper
Logic In
Phase 3
Stepper
Logic In
Phase 2
Stepper
Logic In
+V
S
M
Only one DRV101 is turned
on at sequence time
DRV101
Lamp
5
1
6
4
3
R
2
V
S
= +9V to +60V
R
1
R
3
4.87kΩ
R
4
4.87kΩ
C
1
20µF
+
4.3V
DIN5229
Duty Cycle Adjust
after soft start
Select R
1
and R
2
to divide
down V
S
to 5.5V max.
For example: with V
S
= 60V
R
1
= 11kΩ, R
2
= 1kΩ
V
S
V
IN
= • 60V = 5V
Sets start-up
duty cycle
1kΩ
1kΩ + 11kΩ
FIGURE 20. Soft-Start Circuit for Incandescent Lamps and Other Sensitive Loads.