DRV101 Datasheet, PDF (17/19 Pages) Burr-Brown (TI) – PWM SOLENOID/VALVE DRIVER

Phase 2
Stepper
Logic In
DRV101
M
Only one DRV101 is turned
on at sequence time
+V_S
Phase 1
Stepper
Logic In
DRV101
DRV101
Phase 3
Stepper
Logic In
FIGURE 19. Three-Phase Stepper Motor Driver Provides High-Stepping Torque.
V_S = +9V to +60V
Select R₁ and R₂ to divide
down V_S to 5.5V max.
For example: with V_S = 60V
R₁ = 11kΩ, R₂ = 1kΩ
V_IN =
1kΩ
• 60V = 5V
1kΩ + 11kΩ
V_S
5
DRV101
6
R₁
1
R₂
4
Lamp
R₃
4.87kΩ
Sets start-up
duty cycle
C₁
20µF
+
4.3V
DIN5229
3
Duty Cycle Adjust
after soft start
R₄
4.87kΩ
FIGURE 20. Soft-Start Circuit for Incandescent Lamps and Other Sensitive Loads.
®
17
DRV101