Datasheet

VISHAY
IL410/ IL4108
Document Number 83627
Rev. 1.4, 26-Apr-04
Vishay Semiconductors
www.vishay.com
7
Technical Information
Commutating Behavior
The use of a triac at the output creates difficulties in
commutation due to both the built-in coupled thyristor
systems. The triac can remain conducting by parasitic
triggering after turning off the control current. How-
ever, if the IL410/4108 is equipped with two separate
thyristor chips featuring high dv/dt strength, no RC cir-
cuit is needed in case of commutation.
Current commutation:
The values 100 A/ms with following peak reverse
recovery current > 80 mA should not be exceeded.
Avoiding high-frequency turn-off current
oscillations:
This effect can occur when switching a circuit. Current
oscillations which appear essentially with inductive
loads of a higher winding capacity result in current
commutation and can generate a relatively high peak
reverse recovery current. The following alternating
protective measures are recommended for the indi-
vidual operating states:
Fig. 12 Typical Static Inhibit Voltage Limit
iil410_12
V
DINHmin
=f(I
F
/I
FT
25°C),
parameter: T
j
Device zero voltage
switch can be triggered
only in hatched area
below Tj curves.
Fig. 13 1- Apply a Capacitor to the Supply Pins at the Load-Side
Fig. 14 2 - Connect a Series Resistor to the Output and Bridge Both
by a Capacitor
Fig. 15 3 - Connect a Choke of Low Winding Cap. in Series, e.g., a
Ringcore Choke, with Higher Load Currents
iil410_13
0.1 µF
220 V~
1
2
3
6
5
4
iil410_14
22 nF
220 V~
2
1
3
5
6
4
33 Ω
iil410_15
22 nF
220 V~
1
2
3
5
4
6
500 µH