FOD8332 —
Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,
and Active Miller Clamp
December 2013
FOD8332
Input LED Drive, 2.5 A Output Current, IGBT Drive
Optocoupler with Desaturation Detection, Isolated Fault
Sensing, and Active Miller Clamp
Features
■
Input LED Drive Facilitates Receiving Digitally
Description
The FOD8332 is an advanced 2.5 A output current IGBT
drive optocoupler capable of driving medium power
IGBTs with ratings up to 1,200 V and 150 A. It is suited
for fast-switching driving of power IGBTs and
MOSFETs in motor control inverter applications and
high-performance power systems. The FOD8332 offers
protection features necessary for preventing fault condi-
tions that lead to destructive thermal runaway of IGBTs.
The device utilizes Fairchild’s proprietary Optoplanar
®
coplanar packaging technology and optimized IC design
to achieve reliable high isolation and high noise immunity,
characterized by high common-mode rejection and power
supply rejection specifications. The device is housed in a
wide-body 16-pin small-outline plastic package.
The gate-driver channel consists of an aluminum gallium
arsenide (AlGaAs) light-emitting diode (LED) optically
coupled to an integrated high-speed driver circuit with a
low-R
DS(ON)
MOSFET output stage. The fault-sense
channel consists of an aluminium gallium arsenide
(AlGaAs) LED optically coupled to an integrated high-
speed feedback circuit for fault sensing.
Encoded Signals from PWM Output
■
Optically Isolated Fault-Sensing Feedback
■
Active Miller Clamp to Shut Off IGBT During High
dv/dt without Negative Supply Voltage
■
High Noise Immunity Characterized by
Common Mode Rejection – 35 kV/µs Minimum,
V
CM
= 1500 V
PEAK
■
2.5 A Peak Output Current Driving Capability for
Medium Power IGBT
– P-Channel MOSFETs at Output Stage Enable
Output Voltage Swing Close to Supply Rail
(Rail-to-Rail Output)
– Wide Supply Voltage Range: 15 V to 30 V
■
Integrated IGBT Protection
– Desaturation Detection
– “Soft” IGBT Turn-Off
– Under-Voltage Lockout (UVLO) with Hysteresis
■
Fast Switching Speed Over Full Operating
Temperature Range
– 250 ns Maximum Propagation Delay
– 100 ns Maximum Pulse Width Distortion
■
Extended Industrial Temperate Range:
– –40°C to 100°C
■
Safety and Regulatory Approvals
– UL1577, 4,243 V
RMS
for 1 Minute
– DIN-EN/IEC60747-5-5 (Pending):
1,414 V
PEAK
Working Insulation Voltage
8,000 V
PEAK
Transient Isolation Voltage Rating
■
8 mm Creepage and Clearance Distances
Related Resources
■
FOD8316—2.5 A Output Current, IGBT Drive
Optocoupler with Desaturation, Isolated Fault Sensing
■
FOD8318—2.5 A Output Current, IGBT Drive
Optocoupler with Active Miller Clamp, Desaturation
Detection, and Isolated Fault Sensing
■
AN-3009—Standard Gate-Driver Optocouplers
■
www.fairchildsemi.com/search/tree/optoelectronics/
Applications
■
AC and Brushless DC Motor Drive
■
Industrial Inverter
■
Uninterruptible Power Supply
■
Induction Heating
■
Isolated IGBT/Power MOSFET Gate Drive
©2013 Fairchild Semiconductor Corporation
FOD8332 Rev. 1.0.1
www.fairchildsemi.com
FOD8332 —
Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,
and Active Miller Clamp
Truth Table
LED
X
On
Off
On
Note:
1. FAULT pin is connected to a pull-up resistor.
UVLO (V
DD
– V
E
)
Active
Not Active
X
Not Active
DESAT Detected?
X
Yes
X
No
FAULT
(1)
HIGH
LOW
HIGH
HIGH
V
O
LOW
LOW
LOW
HIGH
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND
V
CC
FAULT
GND
V
LED1-
V
LED1+
V
LED1+
V
LED1-
V
SS
V
CLAMP
V
O
V
SS
V
DD
DESAT
V
LED2+
V
E
Name
Ground for Fault-Sense Optocoupler
Description
Positive Supply Voltage (3 V to 15 V) for Fault Sense Optocoupler
Fault-Sense Output
Ground for Fault-Sense Optocoupler
LED1 Cathode
LED1 Anode
LED1 Anode
LED1 Cathode
Negative Output Supply Voltage
Clamp Supply Voltage
Gate-Drive Output Voltage
Negative Output Supply Voltage
Positive Output Supply Voltage
Desaturation Voltage Input
LED2 Anode (Must Be Unconnected)
Output Supply Voltage/IGBT Emitter
GND
V
CC
FAULT
GND
V
LED1–
V
LED1+
V
LED1+
V
LED1–
1
2
3
4
5
6
7
8
16
V
E
15
V
LED2+
14
DESAT
13
V
DD
12
V
SS
11
V
O
10
V
CLAMP
9
V
SS
Figure 1. Pin Configuration
©2013 Fairchild Semiconductor Corporation
FOD8332 Rev. 1.0.1
www.fairchildsemi.com
2
FOD8332 —
Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,
and Active Miller Clamp
Block Diagram
1
LED2
16
GND
V
CC
FAULT
GND
V
LED1-
V
LED1+
V
LED1+
V
LED1-
V
E
V
LED2+
DESAT
V
DD
V
SS
V
O
V
CLAMP
V
SS
2
15
3
SHIELD
FAULT IC
5
DRIVER
DESAT
UVLO
14
4
13
12
6
11
7
MILLER
CLAMP
OUTPUT IC
10
SHIELD
8
9
Figure 2. Functional Block Diagram
©2013 Fairchild Semiconductor Corporation
FOD8332 Rev. 1.0.1
www.fairchildsemi.com
3
FOD8332 —
Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,
and Active Miller Clamp
Safety and Insulation Ratings
As per DIN EN/IEC 60747-5-5, this optocoupler is suitable for “safe electrical insulation” only within the safety limit
data. Compliance with the safety ratings must be ensured by means of protective circuits.
Symbol
Parameter
Installation Classifications per DIN VDE 0110/1.89 Table 1
Rated Mains Voltage < 150 V
RMS
Rated Mains Voltage < 300 V
RMS
Rated Mains Voltage < 450 V
RMS
Rated Mains Voltage < 600 V
RMS
Rated Mains Voltage < 1000 V
RMS
Climatic Classification
Pollution Degree (DIN VDE 0110/1.89)
Min.
Typ.
I–IV
I–IV
I–IV
I–IV
I–III
40/100/21
2
Max.
Unit
CTI
V
PR
Comparative Tracking Index (DIN IEC 112/VDE 0303 Part 1)
Input to Output Test Voltage, Method b, V
IORM
x 1.875 = V
PR
,
100% Production Test with t
m
= 1 s, Partial Discharge < 5 pC
Input to Output Test Voltage, Method a, V
IORM
x 1.5 = V
PR
,
Type and Sample Test with t
m
= 60 s, Partial Discharge < 5 pC
175
2651
2121
1414
8000
8.0
8.0
0.5
150
100
600
10
9
V
peak
V
peak
V
peak
V
peak
mm
mm
mm
°C
mW
mW
Ω
V
IORM
V
IOTM
Maximum Working Insulation Voltage
Highest Allowable Over Voltage
External Creepage
External Clearance
Insulation Thickness
Safety Limit Values – Maximum Values in Failure;
T
Case
P
S,INPUT
P
S,OUTPUT
R
IO
Case Temperature
Safety Limit Values – Maximum Values in Failure;
Input Power
Safety Limit Values – Maximum Values in Failure;
Output Power
Insulation Resistance at T
S
, V
IO
= 500 V
©2013 Fairchild Semiconductor Corporation
FOD8332 Rev. 1.0.1
www.fairchildsemi.com
4
FOD8332 —
Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,
and Active Miller Clamp
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.
T
A
= 25ºC unless otherwise specified.
Symbol
T
STG
T
OPR
T
J
T
SOL
Parameter
Storage Temperature
Operating Temperature
Junction Temperature
Lead Solder Temperature
(not certified for wave immersion)
Refer to reflow temperature profile on page 31
PD
I
PD
O
I
F(AVG)
I
F(PEAK)
I
OH(PEAK)
I
OL(PEAK)
V
R
V
E
– V
SS
V
DD
– VE
V
DD
– V
SS
V
DESAT
I
DESAT
V
CLAMP
– V
SS
I
CLAMP
t
R(IN)
, t
F(IN)
V
CC
V
FAULT
I
FAULT
Input Power Dissipation
(2)(3)
Output Power Dissipation
(3)(4)
Average Input Current
Peak Transient Forward Current
(Pulse Width < 1 µs)
Peak Output High Current
(5)
Peak Output Low
Current
(5)
Reverse Input Voltage
Negative Output Supply Voltage
(6)
Positive Output Supply Voltage
Output Supply Voltage
Desaturation Voltage
Desaturation Current
Active Miller Clamping Voltage
Peaking Clamping Sinking Current
Input Signal Rise and Fall Time
Positive Input Supply Voltage
FAULT Output Voltage
FAULT Output Current
45
600
25
1.0
3.0
3.0
5.0
-0.5 to 15
-0.5 to 35 – (V
E
– V
SS
)
-0.5 to 35
-0.5 to 35
V
E
to V
E
+ 25
60
-0.5 to 35
1.7
500
-0.5 to 20
-0.5 to 20
16.0
mW
mW
mA
A
A
A
V
V
V
V
V
V
mA
V
A
ns
V
V
mA
Value
-40 to +125
-40 to +100
-40 to +125
260 for 10 s
Units
ºC
ºC
ºC
ºC
Gate Drive Channel
V
O(PEAK)
– V
SS
Gate Drive Output Voltage
Fault Sense Channel
Notes:
2. No derating required across temperature range.
3. Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected
to conditions outside these ratings.
4. Derate linearly above 25°C, free air temperature at a rate of 6.2 mW/°C.
5. Maximum pulse width = 10 µs.
6. This negative output supply voltage is optional. It is only needed when negative gate drive is implemented.
©2013 Fairchild Semiconductor Corporation
FOD8332 Rev. 1.0.1
www.fairchildsemi.com
5
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