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October 2009

FOD3120

High Noise Immunity, 2.5A Output Current,

Gate Drive Optocoupler

Features

■ High noise immunity characterized by 35kV/µs

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 VRMS for 1 min.

– IEC60747-5-2

■ RDS(ON) of 1Ω (typ.) offers lower power

dissipation

■ >8.0mm clearance and creepage distance

(option ‘T’ or ‘TS’)

■ 1,414V Peak Working Insulation Voltage (VIORM)

Applications

■ Industrial inverter

■ Uninterruptible power supply

■ Induction heating

■ Isolated IGBT/Power MOSFET gate drive

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.

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/

Functional Block Diagram

Package Outlines

NC 1

ANODE 2

8 VCC

7 VO2

8

CATHODE 3

6 VO1

NC 4

5 VEE

Note:

A 0.1µF bypass capacitor must be connected between pins 5 and 8.

©2003 Fairchild Semiconductor Corporation

FOD3120 Rev. 1.17.0

8

11

8

1

8

1

www.fairchildsemi.com

Absolute Maximum Ratings (TA = 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

TSTG

TOPR

TJ

TSOL

IF(AVG)

IF(PEAK)

f

VR

IO(PEAK)

VCC – VEE

VO(PEAK)

tR(IN), tF(IN)

PDI

PDO

Parameter

Storage Temperature

Operating Temperature

Junction Temperature

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

TA ≥ 90°C

Input Signal Rise and Fall Time

Input Power Dissipation(2)(4)

Output Power Dissipation(3)(4)

Value

-55 to +125

-40 to +100

-40 to +125

260 for 10sec

25

1

50

5

3.0

0 to 35

0 to 30

0 to VCC

500

45

250

Units

ºC

ºC

ºC

ºC

mA

A

kHz

V

A

V

V

ns

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

TA

VCC – VEE

IF(ON)

VF(OFF)

Parameter

Ambient Operating Temperature

Power Supply

Input Current (ON)

Input Voltage (OFF)

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 TA = 25ºC

Symbol

Parameter

Conditions

VISO

RISO

CISO

Input-Output Isolation

Voltage

Isolation Resistance

Isolation Capacitance

TA = 25ºC, R.H.< 50%, t = 1.0min,

II-O ≤ 10µA, 50Hz(5)(6)

VI-O = 500V(5)

VI-O = 0V, Freq = 1.0MHz(5)

Min.

5000

Typ.

1011

1

Max. Units

VRMS

Ω

pF

©2003 Fairchild Semiconductor Corporation

FOD3120 Rev. 1.17.0

4

www.fairchildsemi.com

Typical Performance Curves

Fig. 1 Output High Voltage Drop vs. Output High Current

0.5

Frequency = 250Hz

Duty C ycle = 0.1%

0.0 IF = 7 to 16mA

VCC = 1 5 to 30V

VE E = 0V

- 0.5

- 1.0

TA = -40°C

- 1.5

- 2.0

TA = 25°C

TA = 100 °C

- 2.5

- 3.0

0. 0

0.5 1.0 1.5 2.0

IOH - OUTPUT HIGH CURRENT (A)

2.5

Fig. 2 Output High Voltage Drop vs. Ambient Temperature

0.00

-0.05

VC C = 15V to 30V

VEE = 0V

IF = 7mA to 16mA

IO = -100mA

-0.10

-0.15

-0.20

-0.25

-0.30

-40

-20 0 20 40 60

TA - AMBIENT TEMPERATURE (°C)

80

100

Fig. 3 Output High Current vs. Ambient Temperature

8

f = 200 Hz

DUTY CYCLE = 0.2%

IF = 7 to 16mA

Rg = 5Ω to GND

6

VCC = 30V

4

VCC = 15V

2

0

-4 0 -2 0

0

20 40 60 80 10 0

TA – AMBIENT TEMPERATURE (°C)

Fig. 4 Output High Current vs. Ambient Temperature

5

f = 10 0 Hz

DUTY CYCLE = 0.5%

IF = 7 t o 16mA

4 Rg = 10Ω to GND

3

V = 30V

CC

2

VCC = 15V

1

0

-4 0 -20

0

2 0 40 60 80 100

TA – AMBIENT TEMPERATURE (°C)

Fig. 5 Output Low Voltage vs. Output Low Current

4

Frequency = 250Hz

Duty Cycle = 99.9%

VF( OFF) = -3.0V to 0.8V

VCC = 15V to 30V

3 VEE = 0V

TA = 100°C

TA = 25°C

2

1 TA = -40°C

0

0.0 0.5 1.0 1.5 2.0 2.5

IOL - OUTPUT LOW CURRENT (A)

Fig. 6 Output Low Voltage vs. Ambient Temperature

0.25

0.20

V CC = 15V to 30V

V EE = 0V

VF(OFF) = -3V to 0.8V

IO = 100mA

0.15

0.10

0.05

0.00

-40

-20 0 20 40 60 80

TA - AMBIENT TEMPERATURE (°C)

100

©2003 Fairchild Semiconductor Corporation

FOD3120 Rev. 1.17.0

7

www.fairchildsemi.com

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