DRV102 Datasheet, PDF (17/19 Pages) Burr-Brown (TI) – PWM SOLENOID/VALVE DRIVER

a)
DRV102 5
1
On/Off
Delay
Adjust
2
3
Duty
Cycle
Adjust
6
Out
4 Gnd
Heating
Element
V_S
Higher temperature results
in lower duty cycle.
Thermistor
R₁
R₂
b)
On/Off
Delay
Adjust
1 ^DRV102
5
0.1µF
2
3
6
Out
4 Gnd
Heating
Element
V_S
10µF
7, 8
100µA
REF200
100µA
Duty Cycle
Adjust
4.7V
2µF Film
1
2
0.1µF V_S
7
10MΩ
2
1kΩ
6
OPA134
3
4
or
Thermistor
5kΩ at +25°C
Integrator improves accuracy
10kΩ
IN4148⁽¹⁾
Temperature
Control
Higher temperature results
in lower duty cycle.
NOTE: (1) Or any common silicon diode suited
to the mechanical mounting requirements.
20kΩ
FIGURE 18. (a) Constant Temperature Controller. (b) Improved Accuracy Constant Temperature Controller.
®
17
DRV102