VO4157M Vishay, VO4157M Datasheet - Page 6

• Manufacturer Part Number: VO4157M
• Description: PHOTOTRIAC ZC 700V 1.6MA 6DIP
• Manufacturer: Vishay

Specifications of VO4157M

• Isolation Voltage: 5300 Vrms
• Voltage - Isolation: 5300Vrms
• Number Of Channels: 1
• Voltage - Off State: 700V
• Output Type: AC, Triac, Zero Cross
• Current - Gate Trigger (igt) (max): 3mA
• Current - Hold (ih): 500µA
• Current - Dc Forward (if): 60mA
• Current - Output / Channel: 300mA
• Mounting Type: Through Hole
• Package / Case: 6-DIP (0.300", 7.62mm)
• 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
• Typical Input Voltage: 1.2 V
• Zero-crossing Circuit: Yes
• Zero-crossing Voltage: 20 V
• Output Device: Triac
• Peak Output Voltage (vdrm): 700 V
• Maximum Input Voltage: 1.4 V
• Maximum Output Voltage: 490 VAC
• Minimum Trigger Current: 3 mA (Max)
• No. Of Channels: 1
• Optocoupler Output Type: Phototriac
• Input Current: 10mA
• Output Voltage: 700V
• 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
6
Control
21609-1
1
2
3
Fig. 12 - Basic Power Triac Driver Circuit
ZC
U1
6
5
4
330
R
G
R1
360
For technical questions, contact:
R
C
S
S
Crossing, High dV/dt, Low Input Current
Optocoupler, Phototriac Output, Zero
Inductive load
220/240
VAC
Hot
Nutral
[e-mail]
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 fig. 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. 1.6, 20-Oct-10
causes
the