VO4158M Vishay, VO4158M Datasheet - Page 6

• Manufacturer Part Number: VO4158M
• Description: Triac & SCR Output Optocouplers Zero Crossing Photo Triac 800V 3mA
• Manufacturer: Vishay

Specifications of VO4158M

• Isolation Voltage: 5300 Vrms
• Configuration: 1
• Maximum Continuous Output Current: 300 mA
• Maximum Input Current: 60 mA
• Maximum Operating Temperature: + 100 C
• Maximum Power Dissipation: 600 mW
• Maximum Reverse Diode Voltage: 6 V
• Minimum Operating Temperature: - 55 C
• Output Type: AC
• Package / Case: PDIP-6
• Typical Input Voltage: 1.2 V
• Zero-crossing Circuit: Yes
• Zero-crossing Voltage: 20 V
• Output Device: Triac
• Peak Output Voltage (vdrm): 800 V
• Maximum Input Voltage: 1.4 V
• Maximum Output Voltage: 560 VAC
• Minimum Trigger Current: 3 mA (Max)
• No. Of Channels: 1
• Optocoupler Output Type: Phototriac
• Input Current: 10mA
• Output Voltage: 800V
• Opto Case Style: DIP
• No. Of Pins: 6
• Input Current Max: 10mA
• Forward Voltage: 1.2V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

VO4157, VO4158
Vishay Semiconductors
www.vishay.com
952
21613
20005
21614
Fig. 12 - Basic Power Triac Driver Circuit
18
16
14
12
10
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Fig. 11 - I
8
6
4
2
0
10
0
Fig. 10 - I
- 40 ºC
50
20
85 °C
FT
50 °C
Trigger Pulse Width (µs)
25 ºC
vs. V
FT
100 150 200 250
85 ºC
30
vs. LED Pulse Width
RMS
V
RMS
For technical questions, please contact: [e-mail]
40
100 °C
and Temperature
100 ºC
(V)
25 °C
50
Optocoupler, Phototriac Output,
Zero Crossing, High dV/dt, Low
60
300 350
70
Input Current
POWER FACTOR CONSIDERATIONS
As a zero voltage crossing optotriac, the commutating dV/dt
spikes can inhibit one half of the TRIAC from turning on. If the
spike potential exceeds the inhibit voltage of the zero-cross
detection circuit, half of the TRIAC will be held-off and not
turn-on. This hold-off condition can be eliminated by using a
capacitor or RC snubber placed directly across the power
triac as shown in figure 11. Note that the value of the
capacitor increases as a function of the load current.
The hold-off condition also can be eliminated by providing a
higher level of LED drive current. The higher LED drive
provides
phototransistor to turn-on before the commutating spike has
activated the zero-cross detection circuit. For example, if a
device requires 1.5 mA for a resistive load, then 2.7 mA
(1.8 times) may be required to control an inductive load
whose power factor is less than 0.3.
a
larger
photocurrent
Document Number: 84634
which
Rev. 1.5, 03-Nov-08
causes
the