IC-JE Datasheet, PDF (6/9 Pages) IC-Haus GmbH – PWM RELAY/SOLENOID DRIVER

iC-JE
PWM RELAY/SOLENOID DRIVER
APPLICATIONS INFORMATION
Rev F1, Page 6/9
Setting the coil current
The following equations can be given for the energise
and hold modes of the PWM control using Electrical
Characteristics Nos. 403 to 408:
K2
RSET =
(4)
I(OUT )_hold
Example
For a relay with a starting current of 100 mA (66 mA
hold current) RSET is calculated as:
K1
RSET =
(3)
I(OUT )_start
RSET
=
3250 ΩA
0.1 A
=
32.5 k Ω
(5)
Application circuits
10...45 V
10...45 V
LOUT
0.01...10 H
LOUT
0.01...10 H
IN ^{LED VB}
OUT
IN
iC−JE
100 nF
CONTROL
ISET
RSET
10...60 kΩ
GND
GND
Figure 2: Driver/relay combination activated via the
external control input IN
LED VB
IN
OUT
100 nF
iC−JE
CONTROL
ISET
RSET
10...60 k Ω
GND
GND
Figure 3: Driver/relay combination activated via the
supply pin GND
10...45 V
10...45 V
LOUT
0.01...10 H
LED VB
IN
OUT
0...100 nF
iC−JE
CONTROL
ISET
RSET
10...60 kΩ
GND
GND
Figure 4: Driver/relay combination activated via the
supply pin VB
LOUT
0.01...10 H
100 nF
R1
C1
LED VB
IN
OUT
iC−JE
ISET
R2
CONTROL
GND
Figure 5: Increased energizing current due to the par-
allel RC-circuit