Application Brochure

V I S H AY I N T E R T E C H N O L O G Y, I N C .
OPTOELECTRONICS
OPTOCOUPLER
Optical Isolation for
Solar Power Applications
FEATURES
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Wide operating voltages available
High operating temperature
Broad range of surface-mount and through-hole package types
Single and dual-channel products
Low on-resistance
High isolation and high creepage distances
RESOURCES
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Optocoupler product portfolio: http://www.vishay.com/optocouplers/
Optical isolation solar power video: http://www.vishay.com/videos/optoelectronics/solar-power
Complete optoelectronics product portfolio: http://www.vishay.com/optoelectronics/
Technical support: optocoupleranswers@vishay.com
Sales contacts: http://www.vishay.com/doc?99914
A WORLD OF
SOLUTIONS
Product Overview
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V I S H AY I N T E R T E C H N O L O G Y, I N C .
OPTOELECTRONICS
OPTOCOUPLER
Isolated DC/AC Inverters
Charge
Control
Battery
– Optocoupler
Phototransistor
DC/DC
Converter
RS-232
RS-485
Phototransistor
High Speed
DC/AC
Inverter
IGBT Drivers
CANbus
µC
RF
Solid-State Relay
Meter
Relay
CAT IV Isolation
Grid
IGBT Drivers
Optically isolated IGBT drivers are used to isolate the high-voltage stage of an DC/AC inverter from the low-voltage control
circuitry. Isolation is required for safety purposes because string inverters are inverting a high-voltage DC
output from the solar panels to a high-voltage output that will be fed to the utility grid. This high voltage must be isolated from
the user accessible low-voltage circuitry. Optically isolated IGBT drivers also allow the designers to separate low-noise control
circuitry from noisy high-voltage and high-current circuitry, which improves performance, shrinks product size, and simplifies
the design process.
Features
• Widest operating voltage from 15 V to 32 V
• High operating temperature up to 110 ºC
• Low input supply current of 2.5 mA or less
• Leading isolation voltage of 5300 VRMS
• Under-voltage lockout with hysteresis
Product Overview
Part
Number
Output
Current
IO (A)
VO3120
2.5
VO3150A
0.5
VOW3120
2.5
VOL3120
2.5
Operating Pulse Width
Voltage
Distortion
Range VCC PWD max.
(V)
(%)
15 to 32
0.2
Supply
Current
ICCn (mA)
2.5
Common
Mode
Rejection
CMR min.
(kV/µs)
VIORM
(VRMS)
890
25
5300
48
1050
2/5
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External
Creepage
Distance
(mm)
>7
10
8
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V I S H AY I N T E R T E C H N O L O G Y, I N C .
OPTOELECTRONICS
OPTOCOUPLER
Isolated Communication Ports
Charge
Control
Battery
– Optocoupler
Phototransistor
DC/DC
Converter
RS-232
RS-485
Phototransistor
High Speed
DC/AC
Inverter
µC
IGBT Drivers
CANbus
RF
Solid-State Relay
Meter
Relay
CAT IV Isolation
Grid
High-Speed Analog and Digital Optocouplers
I/O communications ports in string inverters require isolation for safety and for minimizing the RF noise that can be created
when noise coupling turns communication cables into a highly efficient antenna for RF emissions. Use
of optical isolation can quickly and easily eliminate extremely expensive EMI/RFI complications and reduce design
risk. In other words, a pinch of optocouplers can be worth a pound of ferrite beads and copper shielding!
Features
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•
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RS-232/RS-485
Broad range of surface-mount package types
Single and dual channel
Data rate of 1 MBd, 5 MBd, and 10 MBd
Test isolation voltage up to 5300 VRMS
High common mode transient immunity
Very high working voltage up to 1414 V
Very high transient isolation voltage up to 8000 V
Product Overview
CANbus
µC
High Speed
RF
4 to 20 mA Loop
Part Number
Data Rate
Package
Key Features
VOM452T
VOM453T
1 MBd
SOP-5
SFH6325
1 MBd
DIP-8, SMD-8
VOW135
VOW136
1 MBd
Widebody, DIP-8,
SMD-8
SFH6721T
5 MBd
SOIC-8
CMR of 2.5 kV/μs
VO0661T
10 MBd
SOIC-8
Dual channel
CMR of 25 kV/µs
VOW137
VOW2611
10 MBd
Widebody, DIP-8,
SMD-8
3.7 kV isolation
Small package footprint
5.3 kV isolation
≥ 7 mm creepage clearance distance
Creepage > 10 mm
CMR of 1000 V/ µs
Creepage > 10 mm
CMR of 40.000 V/ µs (typ)
3/5
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V I S H AY I N T E R T E C H N O L O G Y, I N C .
OPTOELECTRONICS
OPTOCOUPLER
Isolated Relays and Alarms
Charge
Control
Battery
– Optocoupler
Phototransistor
DC/DC
Converter
RS-232
RS-485
Phototransistor
High Speed
DC/AC
Inverter
IGBT Drivers
CANbus
µC
RF
Solid-State Relay
Meter
Relay
CAT IV Isolation
Grid
Solid-State Relays and MOSFET Drivers
It is common to include relay contact outputs for actuation of external devices, such as audible alarms in case of
power outages and fans for auxiliary cooling. While mechanical relays can be used in these applications, it is more
reliable to use optically isolated solid-state relays. In addition to Vishay’s broad selection of SSRs, customers also
have the option of using MOSFET drivers to build a custom relay using discrete standard MOSFETs.
Features
• Single and dual channel options
• Packages include DIP, SMD, and SOP
• Low RON
• High open circuit voltage
• High short circuit current
Single channel
SSR: VO1464AT
• Isolation test voltage up to 5300 VRMS
MOSFET Driver: LH1262, VO1263
Part Number
Function
Package
Output
RON
Typical (Ω)
ton / toff1
(µs)
I/O
Isolation
(VRMS)
VO14642AT
SSR
Low RON
SMD-6
DIP-6
1 Form A
0.18
370.50
5300
VO1400AEFTR
SSR
Multi-purpose
SOP-4
1 Form A
2.3
52.36
1500
Package
Open
Circuit
Voltage
Typ. (V)
Short
Circuit
Current
Typ. (µA)
ton / toff1
IF = 20 mA
(µs)
I/O
Isolation
(VRMS)
SMD-8
DIP-8
13.3
10.8
35.90
5300
14.3
30
26.73
5300
SOP-4
8.7
30
53/24
4500
Part Number
Function
LH1262
VO1262
VOM1271T
Product Overview
MOSFET
Driver
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V I S H AY I N T E R T E C H N O L O G Y, I N C .
OPTOELECTRONICS
OPTOCOUPLER
CAT IV Isolation
Charge
Control
Battery
IEC/EN 61010-1 Overvoltage
Protection Category
– Optocoupler
Phototransistor
DC/DC
Converter
DC/AC
Inverter
CAT II 600 V
RS-232
RS-485
Phototransistor
High
Speed
IGBT Drivers
CAT III 600 V
RF
6000 V
CAT IV 300 V
Solid-State
Relay
Meter
4000 V
CAT III 300 V
CANbus
µC
Transient Test
Voltage
Relay
CAT III 1000 V
CAT IV Isolation
8000 V
CAT IV 600 V
Grid
High-Voltage Optocouplers
Features
Isolation requirements vary depending on the device’s installation
category. As shown in the diagram, Category IV devices are
connected to utility power. To protect low-voltage electronics from
high-voltage power, ordinary optocouplers may not be sufficient.
For CAT IV, AC isolation should be at least 8000 V.
• AC isolation of 8200 VRMS minimum
• Distance through insulation > 3 mm
• VDE 0160 and VDE 0884 for electrical power
installation
• IEC 60065 for mains-operated electronics
CNY6XX Ultra High Isolation High Creepage Couplers
Features
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•
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DTI > 3 mm
VIOTM = 12 000 V
Phototransistor output
SMD or through-hole
Creepage
CNY64x
CNY65x
CNY64xST
CNY65xST
9.5 mm
14.0 mm
CNY66x
17.0 mm
Ordering Information
Through-Hole
Package
DIP
Surface-Mount (SMD)
Current Transfer Ratio % (CTR)
50 to 300
63 to 125
100 to 200
100 to 300
CNY64
CNY64A
CNY64B
-
CNY65
CNY65A
CNY65B
-
CNY66
-
CNY66B
CNY651AGR
VOWXX Widebody, High Isolation and High
Creepage Couplers
Package
HVSMD
50 to 150
80 to 240
100 to 300
CNY64ST
CNY64AYST
CNY64ABST
CNY64AGRST
CNY65ST
CNY65AYST
CNY65ABST
CNY65AGRST
-
CNY651AYST
-
CNY651AGRST
Ordering Information
Widebody High Isolation and High Speed Optocouplers
Features
Part Number
• Widebody package with > 10 mm clearance and
creepage distance
• High working voltage up to 1414 V
• High transient voltage 8000 V
• Data rate of 1 MBd and 10 MBd
• High operating temperature up to 100 ºC
• Extreme high common mode transient immunity
up to 40 kV/ µs typ
Product Overview
Current Transfer Ratio % (CTR)
50 to 300
Data Rate
Package
VOW137
VOW2611
10 MBd
Widebody,
DIP-8,
SMD-8
• Creepage > 10 mm
• VIORM = 1414 V
• VIORM = 8000 V
VOW135
VOW136
1 MBd
Widebody,
DIP-8,
SMD-8
• Creepage > 10 mm
• VIORM = 1414 V
• VIORM = 8000 V
5/5
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Key Features
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