FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler
October 2009
FOD3120
High Noise Immunity, 2.5A Output Current,
Gate Drive Optocoupler
Features
■
High noise immunity characterized by 35kV/µs
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Description
The FOD3120 is a 2.5A Output Current Gate Drive
Optocoupler, capable of driving most 1200V/20A
IGBT/MOSFET. It is ideally suited for fast switching
driving of power IGBT and MOSFETs used in motor
control inverter applications, and high performance
power system.
It utilizes Fairchild’s
proprietary
coplanar packaging
technology, Optoplanar
®
, and optimized IC design to
achieve high noise immunity, characterized by high
common mode rejection.
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minimum common mode rejection
2.5A peak output current driving capability for most
1200V/20A IGBT
Use of P-channel MOSFETs at output stage enables
output voltage swing close to the supply rail
Wide supply voltage range from 15V to 30V
Fast switching speed
– 400ns max. propagation delay
– 100ns max. pulse width distortion
Under Voltage LockOut (UVLO) with hysteresis
Extended industrial temperate range, -40°C to 100°C
temperature range
Safety and regulatory approved
– UL1577, 5000 V
RMS
for 1 min.
– IEC60747-5-2
R
DS(ON)
of 1
Ω
(typ.) offers lower power
dissipation
>8.0mm clearance and creepage distance
(option ‘T’ or ‘TS’)
1,414V Peak Working Insulation Voltage (V
IORM
)
It consists of a gallium aluminum arsenide (AlGaAs) light
emitting diode optically coupled to an integrated circuit
with a high-speed driver for push-pull MOSFET output
stage.
Related Resources
■
FOD3150, 1A Output Current, Gate Drive
Optocoupler Datasheet
■
www.fairchildsemi.com/products/opto/
Applications
■
Industrial inverter
■
Uninterruptible power supply
■
Induction heating
■
Isolated IGBT/Power MOSFET gate drive
Functional Block Diagram
NC
1
8
V
CC
Package Outlines
8
8
1
1
ANODE
2
7
V
O2
6
V
O1
CATHODE
3
NC
4
5
V
EE
8
1
8
1
Note:
A 0.1µF bypass capacitor must be connected between pins 5 and 8
.
©2003 Fairchild Semiconductor Corporation
FOD3120 Rev. 1.17.0
www.fairchildsemi.com
FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler
Truth Table
LED
Off
On
On
On
V
CC
– V
EE
“Positive Going”
(Turn-on)
0V to 30V
0V to 11.5V
11.5V to 13.5V
13.5V to 30V
V
CC
– V
EE
“Negative Going”
(Turn-off)
0V to 30V
0V to 10V
10V to 12V
12V to 30V
V
O
Low
Low
Transition
High
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
NC
Anode
Cathode
NC
V
EE
V
O2
V
O1
V
CC
Not Connected
LED Anode
LED Cathode
Not Connected
Negative Supply Voltage
Description
Output Voltage 2 (internally connected to V
O1
)
Output Voltage 1
Positive Supply Voltage
©2003 Fairchild Semiconductor Corporation
FOD3120 Rev. 1.17.0
www.fairchildsemi.com
2
FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler
Safety and Insulation Ratings
As per IEC 60747-5-2. This optocoupler is suitable for “safe electrical insulation” only within the safety limit data.
Compliance with the safety ratings shall be ensured by means of protective circuits.
Symbol
Parameter
Installation Classifications per DIN VDE 0110/1.89 Table 1
For Rated Mains Voltage < 150Vrms
For Rated Mains Voltage < 300Vrms
For Rated Mains Voltage < 450Vrms
For Rated Mains Voltage < 600Vrms
For Rated Mains Voltage < 1000Vrms (Option T, TS)
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
Min.
Typ.
I–IV
I–IV
I–III
I–III
I–III
40/100/21
2
Max.
Unit
CTI
V
PR
Comparative Tracking Index
Input to Output Test Voltage, Method b,
V
IORM
x 1.875 = V
PR
, 100% Production Test with
tm = 1 sec., Partial Discharge < 5pC
Input to Output Test Voltage, Method a,
V
IORM
x 1.5 = V
PR
, Type and Sample Test with
tm = 60 sec.,Partial Discharge < 5 pC
175
2651
2121
V
IORM
V
IOTM
Max Working Insulation Voltage
Highest Allowable Over Voltage
External Creepage
External Clearance
External Clearance (for Option T or TS - 0.4” Lead Spacing)
Insulation Thickness
Safety Limit Values – Maximum Values Allowed in the
Event of a Failure
1,414
6000
8
7.4
10.16
0.5
V
peak
V
peak
mm
mm
mm
mm
T
Case
I
S,INPUT
P
S,OUTPUT
R
IO
Case Temperature
Input Current
Output Power (Duty Factor
≤
2.7%)
Insulation Resistance at T
S
, V
IO
= 500V
150
25
250
10
9
°C
mA
mW
Ω
©2003 Fairchild Semiconductor Corporation
FOD3120 Rev. 1.17.0
www.fairchildsemi.com
3
FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler
Absolute Maximum Ratings
(T
A
= 25ºC unless otherwise specified)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
T
STG
T
OPR
T
J
T
SOL
I
F(AVG)
I
F(PEAK)
f
V
R
I
O(PEAK)
V
CC
– V
EE
V
O(PEAK)
t
R(IN)
, t
F(IN)
PD
I
PD
O
Storage Temperature
Operating Temperature
Junction Temperature
Parameter
Value
-55 to +125
-40 to +100
-40 to +125
260 for 10sec
25
1
50
5
3.0
0 to 35
T
A
≥
90°C
0 to 30
0 to V
CC
500
45
250
Units
ºC
ºC
ºC
ºC
mA
A
kHz
V
A
V
V
ns
mW
mW
Lead Wave Solder Temperature
(refer to page 21 for reflow solder profile)
Average Input Current
Peak Transient Forward Current
(10)
Operating Frequency
(11)
Reverse Input Voltage
Peak Output Current
(1)
Supply Voltage
Peak Output Voltage
Input Signal Rise and Fall Time
Input Power Dissipation
(2)(4)
Output Power Dissipation
(3)(4)
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
T
A
V
CC
– V
EE
I
F(ON)
V
F(OFF)
Power Supply
Input Current (ON)
Input Voltage (OFF)
Parameter
Ambient Operating Temperature
Value
-40 to +100
15 to 30
7 to 16
0 to 0.8
Units
°C
V
mA
V
Isolation Characteristics
Apply over all recommended conditions, typical value is measured at T
A
= 25ºC
Symbol
V
ISO
R
ISO
C
ISO
Parameter
Input-Output Isolation
Voltage
Isolation Resistance
Isolation Capacitance
Conditions
T
A
= 25ºC, R.H.< 50%, t = 1.0min,
I
I-O
≤
10µA, 50Hz
(5)(6)
V
I-O
= 500V
(5)
V
I-O
= 0V, Freq = 1.0MHz
(5)
Min.
5000
Typ.
Max.
Units
V
RMS
10
11
1
Ω
pF
©2003 Fairchild Semiconductor Corporation
FOD3120 Rev. 1.17.0
www.fairchildsemi.com
4
FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler
Electrical Characteristics
Apply over all recommended conditions, typical value is measured at V
CC
= 30V, V
EE
= Ground, T
A
= 25°C
unless otherwise specified.
Symbol
V
F
Parameter
Input Forward Voltage
Conditions
I
F
= 10mA
Min.
1.2
Typ.
1.5
-1.8
Max.
1.8
Units
V
mV/ºC
V
∆
(V
F
/ T
A
) Temperature Coefficient of
Forward Voltage
BV
R
C
IN
I
OH
I
OL
V
OH
V
OL
I
CCH
I
CCL
I
FLH
V
FHL
V
UVLO+
V
UVLO–
Input Reverse Breakdown
Voltage
Input Capacitance
High Level Output
Current
(1)
Current
(1)
I
R
= 10µA
f = 1MHz, VF = 0V
V
O
= V
CC
– 3V
V
O
= V
CC
– 6V
Low Level Output
V
O
= V
EE
+ 3V
V
O
= V
EE
+ 6V
High Level Output Voltage
I
F
= 10mA, I
O
= -2.5A
I
F
= 10mA, I
O
= -100mA
Low Level Output Voltage
I
F
= 0mA, I
O
= 2.5A
I
F
= 0mA, I
O
= 100mA
High Level Supply Current
Low Level Supply Current
Threshold Input Current
Low to High
Threshold Input Voltage
High to Low
Under Voltage Lockout
Threshold
V
O
= Open, I
F
= 7 to 16mA
V
O
= Open, V
F
= 0 to 0.8V
I
O
= 0mA, V
O
> 5V
I
O
= 0mA, V
O
< 5V
I
F
= 10mA, V
O
> 5V
I
F
= 10mA, V
O
< 5V
0.8
11.5
10.0
-1
-2.0
1
2.0
V
CC
– 6.25V
V
CC
– 0.25V
5
60
-2.0
-2.5
-2.5
2.0
2.5
2.5
V
CC
– 2.5V
V
CC
– 0.1V
V
EE
+ 2.5V
V
EE
+ 0.1V
2.8
2.8
2.3
V
EE
+ 6.25V
V
EE
+ 0.25V
3.8
3.8
5.0
pF
A
A
V
V
mA
mA
mA
V
12.7
11.2
1.5
13.5
12.0
V
V
V
UVLO
HYS
Under Voltage Lockout
Threshold Hysteresis
©2003 Fairchild Semiconductor Corporation
FOD3120 Rev. 1.17.0
www.fairchildsemi.com
5
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