IC-GE Datasheet, PDF (8/11 Pages) IC-Haus GmbH – PWM RELAY/SOLENOID DRIVER

iC-GE
PWM RELAY/SOLENOID DRIVER
preliminary
Rev A0.6, Page 8/11
CVB
100nF
LED
DIAG
VB
SYNC
iC-GE
SW
EN
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
10..36V
CVB
100nF
SYNC
EN
LED
DIAG
iC-GE
VB
SW
10..36V
GND
GND
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
Figure 6: High-side driver for relays with free- Figure 7: Low-side driver for relays with free-wheeling
wheeling diode
diode
10..36V
CVB
100nF
CSG
1nF
RS
100K
RSG
2MEG
SYNC
EN
EN
LED
DIAG
iC-GE
CSP
10P
CSN
10P
ACN
VB
50Hz
RL
SW
ACP
RM
IACT
IHOLD
RACT RHOLD
5k
10k
TACT GND
GND
The benefit from synchronous switching may be
utilised, if the switching times are short and repro-
ducible.
V(AC)
Time
V(EN)
Time
Figure 8: Utilising the SYNC input
By means of resistors RS* and capacitors CS* a phase
shifted signal at SYNC is derived from the 50 Hz load
supply.
V(SYNC)
I(SW )
Thus the relay is activated resp. deactivated with zero
crossing of the load supply after sworking EN.
I(RL)
Time
IACT
IHOLD
Time
Time
The phase shift is used to compensate the switching
delay of the relay so that the load can be switched at
zero current.
TRelon
Figure 9: Utilising the SYNC input