IC-GE Datasheet, PDF (7/11 Pages) IC-Haus GmbH – PWM RELAY/SOLENOID DRIVER

iC-GE
PWM RELAY/SOLENOID DRIVER
APPLICATIONS INFORMATION
preliminary
Rev A0.6, Page 7/11
Setting the coil current
The following equations can be given for the energise
and hold modes of the PWM control using Electrical
Characteristics Nos. 703 resp. 704:
Example
For a relay with a starting current of 200 mA and
100 mA hold current the following applies:
K1
RACT =
(3)
I(SW )_act
RACT = ^{5 k ΩA} = 25 k Ω
(5)
0.2 A
K2
RHOLD =
(4)
I(SW )_hold
5 kΩA
RHOLD = _{0.1 A} = 50 kΩ
(6)
Application circuits
10..36V
LED
CVB
100nF
SYNC
EN
DIAG
iC-GE
VB
SW
10..36V
CVB
100nF
SYNC
EN
LED
DIAG
iC-GE
VB
SW
GND
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
GND
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
Figure 2: Activation by switching VB
RACT = 5 kΩ for 1 A energising current and
RHOLD = 10 kΩ for 500 mA hold current
Figure 3: Activation by switching GND
10..36V
DIAG
DIAG
VB
SYNC
CVB
100nF
EN
GND
iC-GE
SW
EN
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
Figure 4: Activation via EN
feedback from DIAG with 5 V logic levels
10..36V
LED
DIAG
VB
SYNC
CVB
100nF
iC-GE
SW
EN
EN
RM
IACT
IHOLD
TACT GND
RACT RHOLD CACT
5k
10k 470nF
GND
Figure 5: 470 nF for 470 ms energising time prolon-
gation