DRV101_15 Datasheet, PDF (16/27 Pages) Texas Instruments – PWM SOLENOID/VALVE DRIVER

+12V
5
DRV101
M
6
Input
1
(On/Off)
4
3 _{Duty Cycle}
dc Tachometer Coupled to Motor
T
Speed Control⁽¹⁾
R₁
R₂
NOTE: (1) Select R₁/R₂ ratio based on tachometer output voltage.
FIGURE 17. Constant Speed Motor Control.
+40V
+15V
22kΩ
1nF _100kΩ
47kΩ
2N2222
Speed Control Input
0V to +10V
Open circuit will
provide 3.4V
“on” signal
1
5
DRV101
M
DC
Motor
6
4
40kΩ
2
3 _{Duty Cycle}
Delay Adjust
Adjust
470kΩ
Frequency In
10kΩ
+15V
One-Shot
0.5µF
1kΩ
V_OUT
AC
T ^Tachometer
Coupled to Motor
5nF
–15V
NP0
VFC32
FIGURE 18. DC Motor Speed Control Using AC Tachometer.
16
DRV101
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