FOD3181 — 0.5A Ouput Current, High Speed MOSFET Gate Driver Optocoupler
August 2008
FOD3181
0.5A Ouput Current, High Speed MOSFET Gate Driver
Optocoupler
Features
■
Guaranteed operating temperature range of -20°C to
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Description
The FOD3181 is a 0.5A Output Current, High Speed
MOSFET Gate Drive Optocoupler. It consists of a
gallium aluminum arsenide (AlGaAs) light emitting diode
optically coupled to a CMOS integrated circuit with a
power stage. The power stage consists of a PMOS pull-
up and a NMOS pull-down power transistor. It is ideally
suited for high frequency driving of MOSFETs used in
Plasma Display Panels (PDPs), motor control invertor
applications, and high performance DC/DC converters.
The device is packaged in an 8-pin dual in-line housing
compatible with 260°C reflow processes for lead free
solder compliance.
+85°C
0.5A minimum peak output current
High speed response: 500ns max propagation delay
over temperature range
Wide V
CC
operating range: 10V to 20V
5000Vrms, 1 minute isolation
Minimum creepage distance of 7.0mm
Minimum clearance distance of 7.0mm
C-UL, UL and VDE* approved
10kV/µs minimum common mode rejection (CMR) at
V
CM
= 1,500V
R
DS(ON)
of 1.5
Ω
(typ.) offers lower power dissipation
Applications
■
Plasma Display Panel
■
High performance DC/DC convertor
■
High performance switch mode power supply
■
High performance uninterruptible power supply
■
Isolated Power MOSFET gate drive
*Requires ‘V’ ordering option
Functional Block Diagram
FOD3181
Package Outlines
NO CONNECTION
1
8
VCC
8
ANODE
2
7
OUTPUT
1
CATHODE
3
6
OUTPUT
NO CONNECTION
4
5
VEE
8
1
8
1
Note:
A 0.1µF bypass capacitor must be connected between pins 5 and 8
.
©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
www.fairchildsemi.com
FOD3181 — 0.5A Ouput Current, High Speed MOSFET Gate Driver Optocoupler
Absolute Maximum Ratings
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(tr)
I
F(TRAN)
V
R
I
OH(PEAK)
I
OL(PEAK)
V
CC
– V
EE
V
O(PEAK)
P
O
P
D
Storage Temperature
Parameter
Operating Temperature
Junction Temperature
Lead Solder Temperature
Average Input Current
(1)
Minimum Rate of Rise of LED Current
Peak Transient Input Current (<1µs pulse width, 300pps)
Reverse Input Voltage
“High” Peak Output Current
(2)
“Low” Peak Output Current
(2)
Supply Voltage
Output Voltage
Output Power Dissipation
(4)
Total Power Dissipation
(4)
Value
-40 to +125
-20 to +85
-20 to +125
260 for 10 sec.
25
250
1.0
5
1.5
1.5
-0.5 to 25
0 to V
CC
250
300
Units
°C
°C
°C
°C
mA
ns
A
V
A
A
V
V
mW
mW
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
V
CC
– V
EE
I
F(ON)
V
F(OFF)
T
OPR
Power Supply
Input Current (ON)
Input Voltage (OFF)
Parameter
Value
10 to 20
12 to 18
0 to 0.8
-20 to +85
Units
V
mA
V
°C
Operating Temperature
©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
www.fairchildsemi.com
2
FOD3181 — 0.5A Ouput Current, High Speed MOSFET Gate Driver Optocoupler
Electrical-Optical Characteristics (DC)
Symbol
Parameter
I
OH
I
OL
V
OH
V
OL
I
CCH
I
CCL
I
FLH
V
FHL
V
F
High Level Output Current
(2)(3)
Low Level Output Current
(2)(3)
High Level Output Voltage
(5)(6)
Low Level Output Voltage
(5)(6)
High Level Supply Current
Low Level Supply Current
Threshold Input Current Low to High
Input Forward Voltage
Temperature Coefficient of
Forward Voltage
Input Reverse Breakdown Voltage
Input Capacitance
(T
A
= -20°C to +70°C)
Over recommended operating conditions unless otherwise specified.
Test Conditions
V
OH
= (V
CC
– V
EE
– 1V)
V
OL
= (V
CC
– V
EE
– 1V)
I
O
= -100mA
I
O
= 100mA
Output Open
I
F
= 7 to 10mA
Output Open
V
F
= 0 to 0.8V
I
O
= 0mA, V
O
> 5V
Min.
0.5
0.5
V
CC
– 0.5
Typ.*
Max.
Unit
A
A
V
V
EE
+ 0.5
4.8
5.0
6.0
6.0
10
0.8
1.2
1.5
-1.5
5
60
1.8
V
mA
mA
mA
V
V
mV/°C
V
pF
Threshold Input Voltage High to Low I
O
= 0mA, V
O
< 0.5V
I
F
= 10mA
I
F
= 10mA
I
R
= 10µA
f = 1MHz, V
F
= 0V
∆
V
F
/ T
A
BV
R
C
IN
Switching Characteristics
(T
A
= -20°C to +70°C)
Over recommended operating conditions unless otherwise specified.
Symbol
t
PLH
t
PHL
t
r
t
f
| CM
H
|
| CM
L
|
Parameter
Test Conditions
Min.
50
50
Typ.*
135
105
75
55
Max.
500
500
Unit
ns
ns
ns
ns
kV/µs
kV/µs
Propagation Delay Time to High I
F
= 10mA, R
g
= 10
Ω
, f = 250kHz,
Output Level
(7)
Duty Cycle = 50%, C
g
= 10nF
Propagation Delay Time to Low
Output Level
(7)
Rise Time
Fall Time
Output High Level Common
Mode Transient Immunity
(8)(9)
Output Low Level Common
Mode Transient Immunity
(8)(10)
T
A
= +25°C, I
f
= 7 to 10mA,
V
CM
= 1.5kV, V
CC
= 20V
T
A
= +25°C, V
f
= 0V, V
CM
= 1.5kV,
V
CC
= 20V
C
L
= 10nF, R
g
= 10
Ω
10
10
Isolation Characteristics
(T
A
= -20°C to +70°C)
Symbol
V
ISO
R
I-O
C
I-O
Parameter
Withstand Isolation Voltage
(11)(12)
Resistance (input to output)
(12)
Capacitance (input to output)
Test Conditions
T
A
= 25°C, R.H. < 50%,
t = 1min., I
I-O
≤
20 µA
V
I-O
= 500V
Freq. = 1MHz
Min.
5000
Typ.*
Max.
Unit
V
rms
10
11
1
Ω
pF
* All typical values at T
A
= 25°C
©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
www.fairchildsemi.com
3
FOD3181 — 0.5A Ouput Current, High Speed MOSFET Gate Driver Optocoupler
Notes:
1. Derate linearly above +70°C free air temperature at a rate of 0.3mA/°C.
2. The output currents I
OH
and I
OL
are specified with a capacitive current limited load = (3 x 0.01µF) + 0.5Ω,
frequency = 8kHz, 50% DF.
3. The output currents I
OH
and I
OL
are specified with a capacitive current limited load = (3 x 0.01µF) + 40Ω,
frequency = 8kHz, 50% DF.
4. No derating required across operating temperature range.
5. In this test, V
OH
is measured with a dc load current of 100mA. When driving capacitive load V
OH
will approach V
CC
as I
OH
approaches zero amps.
6.
7.
Maximum pulse width = 1ms, maximum duty cycle = 20%.
t
PHL
propagation delay is measured from the 50% level on the falling edge of the input pulse to the 50% level of the
falling edge of the V
O
signal. t
PLH
propagation delay is measured from the 50% level on the rising edge of the input
pulse to the 50% level of the rising edge of the V
O
signal.
Pin 1 and 4 need to be connected to LED common.
Common mode transient immunity in the high state is the maximum tolerable dV
CM
/dt of the common mode pulse
V
CM
to assure that the output will remain in the high state (i.e. V
O
> 10.0V).
8.
9.
10. Common mode transient immunity in a low state is the maximum tolerable dV
CM
/dt of the common mode pulse,
V
CM
, to assure that the output will remain in a low state (i.e. V
O
< 1.0V).
11. In accordance with UL 1577, each optocoupler is proof tested by applying an insulation test voltage > 6000Vrms,
60Hz for 1 second (leakage detection current limit I
I-O
< 5µA).
12. Device considered a two-terminal device: pins on input side shorted together and pins on output side shorted
together.
©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
www.fairchildsemi.com
4
FOD3181 — 0.5A Ouput Current, High Speed MOSFET Gate Driver Optocoupler
Typical Performance Curves
Fig. 1 Input Forward Current vs. Forward Voltage
100
6
Fig. 2 Low To High Input Current Threshold
vs. Ambient Temperature
V = 10 to 20V
CC
V
EE
= 0
Output = Open
I
FLH
– LOW TO HIGH INPUT CURRENT
THRESHOLD (mA)
I
F
– FORWARD CURRENT (mA)
10
5
4
1
T
A
= 100°C
T
A
= -40°C
3
0.1
T
A
= 25°C
2
0.01
1
0.001
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
0
-40
-20
0
20
40
60
80
100
V
F
– FORWARD VOLTAGE (V)
T
A
– AMBIENT TEMPERATURE (°C)
Fig. 3 Output Low Voltage vs. Ambient Temperature
0.30
V
F
(OFF) = -3.0V to 0.8V
I
OUT
= 100mA
V = 10V to 20V
CC
Fig. 4 High Output Voltage Drop vs. Ambient Temperature
(V
OH
- V
CC
) – HIGH OUTPUT VOLTAGE DROP (V)
0.00
V
-0.05
CC
= 10 to 20V, V
EE
= 0
V
OL
– OUTPUT LOW VOLTAGE (V)
0.25
I
F
= 10mA to 16mA
I
OUT
= -100 mA
V
EE
= 0
0.20
-0.10
0.15
-0.15
0.10
-0.20
0.05
-0.25
0.00
-40
-20
0
20
40
60
80
100
-0.30
-40
-20
0
20
40
60
80
100
T
A
– AMBIENT TEMPERATURE (°C)
T
A
– AMBIENT TEMPERATURE (°C)
Fig. 5 Supply Current vs. Ambient Temperature
6.2
V
5.8
CC
Fig. 6 Supply Current vs. Supply Voltage
6.2
I
F
= 10mA (for I
CCH
)
I
F
= 0mA (for I
CCL
)
T
A
= 25
o
C, V
EE
= 0V
= 20V, V
EE
= 0
I
CC
– SUPPLY CURRENT (mA)
5.4
I
CCL
5.0
I
CCH
4.6
I
CC
– SUPPLY CURRENT (mA)
I
F
= 10mA (for I
CCH
)
I
F
= 0mA (for I
CCL
)
5.8
5.4
5.0
I
CCL
I
CCH
4.6
4.2
4.2
3.8
-40
-20
0
20
40
60
80
100
3.8
10
12
14
16
18
20
T
A
– AMBIENT TEMPERATURE (°C)
V
CC
– SUPPLY VOLTAGE (V)
©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
www.fairchildsemi.com
5
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