IL4116-X006 데이터 시트보기 (PDF) - Vishay Semiconductors
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IL4116-X006
Vishay Semiconductors
IL4116-X006 Datasheet PDF : 8 Pages
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IL4116, IL4117, IL4118
Vishay Semiconductors Optocoupler, Phototriac Output, Zero
Crossing, Very Low Input Current
This hold-off condition can be eliminated by using a snubber
and also by providing a higher level of LED drive current. The
higher LED drive provides a larger photocurrent which
causes the triac to turn-on before the commutating spike
has activated the zero cross detection circuit. Fig. 10 shows
the relationship of the LED current for power factors of less
than 1.0. The curve shows that if a device requires 1.5 mA
for a resistive load, then 1.8 times (2.7 mA) that amount
would be required to control an inductive load whose power
factor is less than 0.3 without the snubber to dump the
spike.
1
CS (µF) = 0.0032 (µF) x 10 ^ (0.0066 IL (mA))
0.1
2.0
1.8
1.6
1.4
1.2
IFth Normalized to IFth at PF = 1.0
1.0
0.8
0
iil4116_08
0.2 0.4 0.6 0.8 1.0 1.2
PF - Power Factor
Fig. 10 - Normalized LED Trigger Current
0.01
PF = 0.3
IF = 2.0 mA
0.001
0
iil4116_07
50 100 150 200 250 300 350 400
IL - Load Current (mA)
Fig. 9 - Shunt Capacitance vs. Load Current vs. Power Factor
APPLICATIONS
Direct switching operation:
The IL4116, IL4117, IL4118 isolated switch is mainly suited
to control synchronous motors, valves, relays and
solenoids. Fig. 11 shows a basic driving circuit. For resistive
load the snubber circuit RS CS can be omitted due to the
high static dV/dt characteristic.
1
6
Control
2
5
ZC
3
4
U1
21608-1
Hot
RS
220/240
CS
VAC
Inductive load
Nutral
Fig. 11 - Basic Direct Load Driving Circuit
Indirect switching operation:
The IL4116, IL4117, IL4118 switch acts here as an isolated
driver and thus enables the driving of power thyristors and
power triacs by microprocessors. Fig. 12 shows a basic
driving circuit of inductive load. The resister R1 limits the
driving current pulse which should not exceed the maximum
permissible surge current of the IL4116, IL4117, IL4118.
The resister RG is needed only for very sensitive thyristors or
triacs from being triggered by noise or the inhibit current.
Control
21609-1
R1
360
1
6
Hot
2
ZC
3
U1
5
4
RG
330
220/240
R
S
VAC
CS
Inductive load
Nutral
Fig. 12 - Basic Power Triac Driver Circuit
www.vishay.com
6
For technical questions, contact: optocoupleranswers@vishay.com
Document Number: 83628
Rev. 1.8, 20-Oct-10
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