FOD8321 — 2.5A Output Current, Gate Drive Optocoupler in Optoplanar
®
Wide Body SOP 5-Pin
May 2012
FOD8321
2.5A Output Current, Gate Drive Optocoupler in
Optoplanar
®
Wide Body SOP 5-Pin
Features
■
Fairchild’s Optoplanar
®
packaging technology
Description
The FOD8321 is a 2.5A Output Current Gate Drive
Optocoupler, capable of driving medium power IGBT/
MOSFETs. It is ideally suited for fast switching driving of
power IGBT and MOSFETs used in motor control
inverter applications, and high performance power
systems.
It utilizes Fairchild’s coplanar packaging technology,
Optoplanar
®
, and optimized IC design to achieve reliably
high insulation voltage and high noise immunity.
It consists of a aluminum gallium arsenide (AlGaAs) light
emitting diode optically coupled to an integrated circuit
with a high-speed driver for push-pull MOSFET output
stage. The device is housed in a wide body 5-pin small
outline plastic package.
■
■
■
■
■
■
■
provides reliable and high voltage insulation with
greater than 8mm creepage and clearance distance,
and 0.5mm internal insulation distance while still
offering a compact footprint
2.5A output current driving capability for medium
power IGBT/MOSFET
– Use of P-Channel MOSFETs at output stage
enables output voltage swing close to the supply
rail
20kV/µs Minimum Common Mode Rejection
Wide Supply Voltage range from 15V to 30V
Fast Switching Speed over full operating temperature
range
– 500ns max. propagation delay
– 300ns max. pulse width distortion
UnderVoltage LockOut (UVLO) with hysteresis
Extended industrial temperate range, -40 to 100°C
temperature range
Safety and regulatory approvals
– UL1577, 5,000V
RMS
for 1 min.
– DIN EN/IEC60747-5-5, 1,414V peak working
insulation voltage
Functional Schematic
ANODE
1
6
V
DD
5
V
O
Applications
■
AC and brushless DC motor drives
■
Industrial inverter
■
Uninterruptible power supply
■
Induction heating
■
Isolated IGBT/Power MOSFET gate drive
CATHODE
3
4
V
SS
Related Resources
■
FOD3120, High Noise Immunity, 2.5A Output Current,
Gate Drive Optocoupler Datasheet
©2010 Fairchild Semiconductor Corporation
FOD8321 Rev. 1.0.4
www.fairchildsemi.com
FOD8321 — 2.5A Output Current, Gate Drive Optocoupler in Optoplanar
®
Wide Body SOP 5-Pin
Truth Table
LED
Off
On
On
On
V
DD–
V
SS
“Positive Going”
(Turn-on)
0V to 30V
0V to 11.5V
11.5V to 14.5V
14.5V to 30V
V
DD–
V
SS
“Positive Going”
(Turn-off)
0V to 30V
0V to 10V
10V to 13V
13V to 30V
V
O
Low
Low
Transition
High
Pin Definitions
Pin #
1
3
4
5
6
Name
Anode
Cathode
V
SS
V
O
V
DD
LED Anode
LED Cathode
Negative Supply Voltage
Output Voltage
Positive Supply voltage
Description
Pin Configuration
1
6
5
3
4
ANODE
CATHODE
V
DD
V
O
V
SS
©2010 Fairchild Semiconductor Corporation
FOD8321 Rev. 1.0.4
www.fairchildsemi.com
2
FOD8321 — 2.5A Output Current, Gate Drive Optocoupler in Optoplanar
®
Wide Body SOP 5-Pin
Safety and Insulation Ratings
As per DIN EN/IEC60747-5-5. 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
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
Min.
Typ.
I–IV
I–IV
I–IIII
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
t
m
= 1 sec., Partial Discharge < 5pC
Input to Output Test Voltage, Method a,
V
IORM
x 1.5 = V
PR
, Type and Sample Test with
t
m
= 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
Insulation Thickness
Safety Limit Values – Maximum Values Allowed in the
Event of a Failure
1,414
6000
8.0
8.0
0.5
V
peak
V
peak
mm
mm
mm
T
S
I
S,INPUT
P
S,OUTPUT
R
IO
Case Temperature
Input Current
Output Power
Insulation Resistance at T
S
, V
IO
= 500V
150
200
600
10
9
°C
mA
mW
Ω
©2010 Fairchild Semiconductor Corporation
FOD8321 Rev. 1.0.4
www.fairchildsemi.com
3
FOD8321 — 2.5A Output Current, Gate Drive Optocoupler in Optoplanar
®
Wide Body SOP 5-Pin
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)
F
V
R
I
O(PEAK)
V
DD
V
O(PEAK)
t
R(IN)
, t
F(IN)
PD
I
PD
O
Storage Temperature
Parameter
Operating Temperature
Junction Temperature
Lead Solder Temperature (Refer to Reflow Temperature
Profile)
Average Input Current
Operating Frequency
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)
Value
-40 to +125
-40 to +100
-40 to +125
260 for 10 sec
25
50
5.0
3.0
0 to 35
0 to V
DD
500
45
500
Units
°C
°C
°C
°C
mA
kHz
V
A
V
V
ns
mW
mW
Notes:
1. Maximum pulse width = 10µs, maximum duty cycle = 0.2%.
2.
No derating required across operating temperature range.
3.
Derate linearly from 25°C at a rate of 5.2mW/°C
4.
Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected
to conditions outside these ratings.
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
DD
– V
SS
I
F(ON)
V
F(OFF)
Parameter
Ambient Operating Temperature
Supply Voltage
Input Current (ON)
Input Voltage (OFF)
Min.
-40
16
10
0
Max.
100
30
16
0.8
Unit
°C
V
mA
V
©2010 Fairchild Semiconductor Corporation
FOD8321 Rev. 1.0.4
www.fairchildsemi.com
4
FOD8321 — 2.5A Output Current, Gate Drive Optocoupler in Optoplanar
®
Wide Body SOP 5-Pin
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
≤
20µA, 50Hz
(5)(6)
V
I-O
= 500V
(5)
V
I-O
= 0V, Freq = 1.0MHz
(6)
Min.
5,000
Typ.
Max.
Units
V
RMS
10
11
1
Ω
pF
Notes:
5. Device is considered a two terminal device: Pins 1 and 3 are shorted together and Pins 4, 5 and 6 are shorted
together.
6. 5,000 VAC
RMS
for 1 minute duration is equivalent to 6,000 VAC
RMS
for 1 second duration.
Electrical Characteristics
Apply over all recommended conditions, typical value is measured at V
DD
= 30V, V
SS
= Ground, T
A
= 25°C unless
otherwise specified.
Symbol
V
F
Δ(V
F
/ T
A
)
BV
R
C
IN
I
OH
I
OL
V
OH
V
OL
I
DDH
I
DDL
I
FLH
V
FHL
V
UVLO+
V
UVLO-
UVLO
HYS
Parameter
Input Forward Voltage
Temperature Coefficient of
Forward Voltage
Input Reverse Breakdown
Voltage
Input Capacitance
High Level Output
Current
(1)
Low Level Output
Current
(1)
High Level Output
Voltage
(7)(8)
Low Level Output
Voltage
(7)(8)
Conditions
I
F
= 10mA
Min.
1.1
Typ.
1.5
-1.8
Max.
1.8
Units
V
mV/°C
V
Figure
16
I
R
= 10µA
f = 1MHz, V
F
= 0V
V
OH
= V
DD
– 3V
V
OH
= V
DD
– 6V
V
OL
= V
SS
+ 3V
V
OL
= V
SS
+ 6V
I
F
= 10mA, I
O
= -2.5A
I
F
= 10mA, I
O
= -100mA
I
F
= 10mA, I
O
= 2.5A
I
F
= 0mA, I
O
= 100mA
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
5
60
1.0
2.0
1.0
2.0
V
DD
– 6.25
V
DD
– 0.5
V
DD
– 2.5
V
DD
– 0.1
V
SS
+ 2.5
V
SS
+ 0.1
2.9
2.8
2.4
0.8
11.5
10.0
12.7
11.2
1.5
14.5
13.0
V
SS
+ 6.25
V
SS
+ 0.5
5
5
7.5
2.0
2.0
2.5
2.5
2.5
2.5
pF
A
A
A
A
V
V
V
V
mA
mA
mA
V
V
V
V
1, 3
1, 3, 19
4, 6
4, 6, 18
1
1, 2, 20
4
5, 21
7, 8, 22
7, 8, 23
9, 15, 24
25
17, 26
17, 26
High Level Supply Current V
O
Open, I
F
= 10 to 16mA
Low Level Supply Current
Threshold Input Current
Low to High
Threshold Input Voltage
High to Low
UnderVoltage Lockout
Threshold
UnderVoltage Lockout
Threshold Hysteresis
Notes:
7. In this test, V
OH
is measured with a dc load current of 100mA. When driving capacitive load V
OH
will approach V
DD
as I
OH
approaches zero amps.
8. Maximum pulse width = 1ms, maximum duty cycle = 20%.
©2010 Fairchild Semiconductor Corporation
FOD8321 Rev. 1.0.4
www.fairchildsemi.com
5
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