CT3120
2.5A MOSFET/IGBT Gate Driver Optocoupler
Features
•
•
•
Peak Output Current : IOP = ±2.5A (max)
Threshold Input Current: IFLH = 5 mA (max)
Common mode transient immunity : ±20kV/µs
Description
The CT3120 consists of a GaAsP LED optically
coupled to an integrated circuit with a power output
stage. This optocoupler is ideally suited for driving
power IGBTs and MOSFETs used in motor control
inverter applications. The high operating voltage
range of the output stage provides the drive
voltages required by gate controlled devices.
•
Under voltage lock out (UVLO) protection with
hysteresis
•
Pb free and RoHS compliant.
Applications
•
•
•
•
Isolated IGBT/Power MOSFET gate drive
Industrial Inverter
AC brushless and DC motor drives
Induction Heating
Package Outline
Note: Different lead forming options available. See package
dimension.
CT Micro
Proprietary & Confidential
）
(min
Schematic
Page 1
Rev 1
Aug, 2013
CT3120
2.5A MOSFET/IGBT Gate Driver Optocoupler
Truth Table
LED
Off
On
On
On
Vcc-V
EE
Positive Going
0 to 30 V
0 to 11.5V
11.5 to 13.5V
13.5 to 30V
Vcc-V
EE
Negative Going
0 to 30V
0 to 10V
10 to 12V
12 to 30V
Output
Low
Low
Transition
High
Absolute Maximum Rating at 25
o
C
Symbol
V
ISO
T
OPR
T
STG
T
SOL
P
T
f
OPR
Isolation voltage
Operating temperature
Storage temperature
Soldering temperature
Total Power Dissipation
Operating Frequency
Parameters
Ratings
5000
-40 ~ +100
-55 ~ +125
260
300
50
Units
V
RMS
0
C
0
C
0
C
Notes
1
2
mW
kHz
3
Emitter
I
F
I
FP
V
R
Forward current
Peak forward current (50% duty, 1ms P.W)
Reverse voltage
25
1
5
mA
A
V
Detector
P
D
V
O(PEAK)
I
OPH
I
OPL
V
CC
Notes
1.
2.
3.
4.
AC for 1 minute, RH = 40 ~ 60%.
For 10 second peak
Exponential Waveform, IO(PEAK)
≤
|2.5A|, Pulse Width
≤
0.3us
Pulse Width = 10uS, DC = 1.0%
Power dissipation
Peak Output Voltage
Output High Peak Current
Output Low Peak Current
Supply voltage
250
35
2.5
2.5
0 to 30
mW
V
A
A
V
4
4
CT Micro
Proprietary & Confidential
Page 2
Rev 1
Aug, 2013
CT3120
2.5A MOSFET/IGBT Gate Driver Optocoupler
Electrical Characteristics
Typical values are measured at Vcc=30V, V
EE
= Gnd, T
A
= 25
0
C(unless otherwise stated)
Emitter Characteristics
Symbol
V
F
V
R
V
F
/ T
A
Parameters
Forward voltage
Reverse Voltage
Temperature coefficient of
IF =10mA
forward voltage
-
-1.8
-
mV/°
C
Test Conditions
IF = 10mA
IR = 10µA
Min
-
5.0
Typ
1.45
-
Max
1.7
-
Units
V
V
Notes
Detector Characteristics
Symbol
I
CCL
I
CCH
Parameters
Logic Low Supply Current
Logic High Supply Current
Test Conditions
V
F
= 0 to 0.8V, V
O
= Open
I
F
= 7mA to 10mA, V
O
= Open
Min
-
-
Typ
1.5
1.7
Max
3.7
3.7
Units
mA
Notes
Transfer Characteristics
Symbol
Parameters
Test Conditions
I
F
= 10mA, I
O
= -2.5A
6.25
Min
V
CC
-
Typ
-
Max
-
Units
Notes
V
OH
High Level Output Voltage
V
CC
-
I
F
= 10mA, I
O
= -100mA
0.25
V
EE
I
F
= 0mA, I
O
= 2.5A
-
-
+6.25
-
-
V
V
OL
Low Level Output Voltage
V
EE
I
F
= 0mA, I
O
= 100mA
V
O
= V
CC
-3V
-
-1
-2
1
2
-
0.8
11
10
-
+0.25
-
-
-
-
2.0
-
-
-
-
V
I
OPH
High Level Output Current
V
O
= V
CC
-6V
V
O
= V
EE
+3V
-
-
A
I
OPL
I
FHL
V
FHL
V
UVLO+
V
UVLO-
Low Level Output Current
V
O
= V
EE
+6V
Input Threshold Current
Input Threshold Voltage
Under Voltage Lockout
Threshold
I
O
= 0mA, V
O
> 5V
I
O
= 0mA, V
O
< 5V
I
O
= 10mA, V
O
> 5V
I
O
= 10mA, V
O
< 5V
-
5.0
-
13.5
A
mA
V
V
12.2
CT Micro
Proprietary & Confidential
Page 3
Rev 1
Aug, 2013
CT3120
2.5A MOSFET/IGBT Gate Driver Optocoupler
Electrical Characteristics
Typical values are measured at Vcc=30V, V
EE
= Gnd, T
A
= 25
0
C(unless otherwise stated)
Switching Characteristics
Symbol
T
PHL
T
PLH
P
WD
t
PSK
t
r
t
f
t
UVLO(ON)
t
UVLO(OFF)
|CM
H
|
Parameters
High to Low Propagation Delay
Low to High Propagation Delay
I
F
= 7 to 16mA, C
L
= 10nF,
Pulse Width Distortion
R
L
= 10 , f= 10kHz, Duty =
Propagation Delay Skew
Rise Time
Fall Time
UVLO Turn On Delay
UVLO Turn Off Delay
Common Mode Transient High
I
F
= 10mA, V
O
> 5V
I
F
= 10mA, V
O
< 5V
V
CC
= 30V,
R
L
= 350 ,
T
A
= 25
0
C,
I
F
= 7 to 16mA,
-20
kV/µs
50%, T
A
= 25
0
C
60
60
2.5
0.4
40
ns
ns
ns
µs
µs
10
100
ns
Test Conditions
Min
120
150
Typ
185
175
Max
300
300
Units
ns
ns
Notes
|CM
L
|
Common Mode Transient Low
V
CM
= 2kV
I
F
= 0mA
20
kV/µs
CT Micro
Proprietary & Confidential
Page 4
Rev 1
Aug, 2013
CT3120
2.5A MOSFET/IGBT Gate Driver Optocoupler
Typical Characteristic Curves
CT Micro
Proprietary & Confidential
Page 5
Rev 1
Aug, 2013
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