DRV102 Datasheet, PDF (15/23 Pages) Burr-Brown (TI) – PWM SOLENOID/VALVE DRIVER

APPLICATION CIRCUITS
+5V
5kΩ
Flag
7
Thermal Shutdown
Over/Under Current
5
V_S
V_S
Microprocessor
TTL Control Input 1
On
Off
Delay
2
24kHz
Oscillator
PWM
3
6
Out
DRV102
4 Gnd
NOTE: (1) Duty cycle can be programmed by
a resistor, analog voltage, or D/A converter.
Do not drive below 0.1V.
Delay
Adjust
C_D R_PWM
Duty Cycle
Adjust⁽¹⁾
(10% to 90%)
Can drive most types
of solenoid-actuated
valves and actuators
Pinch Valve
Flexible Tube
Plunger
Solenoid Coil
FIGURE 14. Fluid Flow Control System.
Brighter light results in
increased duty cycle
On/Off
DRV102
1
5
V_S
6
Out
2
3
4
Delay
Adjust
Lamp
Aimed at
λ ambient
light
10kΩ
Cadmium Sulfide
Optical Detector
(Clairex CL70SHL
or CLSP5M)
FIGURE 15. Instrument Light Dimmer Circuit.
Input
(On/Off)
4-20mA
DRV102
1
5
V_S
6
Out
2
34
Delay
Adjust
100Ω
Duty Cycle Adjust
187Ω
(1)
Coil
Twisted Pair
NOTE: (1) Rectifier diode required for inductive
loads to conduct load current during the off cycle.
FIGURE 16. 4-20mA Input to PWM Output.
DRV102
15
SBVS009A
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