Fairchild FOD3120 service manual

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

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 V

RMS

for 1 min. – IEC60747-5-2 R

■

of 1 Ω (typ.) offers lower power

DS(ON)

dissipation >8.0mm clearance and creepage distance

■

(option ‘T’ or ‘TS’) 1,414V Peak Working Insulation Voltage (V

■

IORM

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

technology, Optoplanar

proprietary

®

, and optimized IC design to

coplanar packaging

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

1

NC

2

3

4

ANODE

CATHODE

Note:

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

8

V

CC

7

V

O2

VO1

6

5

V

EE

8

1

8

1

8

1

.

Truth Table

V

–

V

LED

CC

“Positive Going”

EE

(Turn-on)

V

–

V

CC

“Negative Going”

EE

(Turn-off) V

Off 0V to 30V 0V to 30V Low

On 0V to 11.5V 0V to 10V Low

On 11.5V to 13.5V 10V to 12V Transition

On 13.5V to 30V 12V to 30V High

Pin Definitions

Pin # Name Description

1NCNot Connected 2 Anode LED Anode 3 Cathode LED Cathode 4NCNot Connected 5V 6V 7V 8V

EE

O2

O1

CC

Negative Supply Voltage Output Voltage 2 (internally connected to V Output Voltage 1 Positive Supply Voltage

O1

)

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

O

Safety and Insulation Ratings

As per IEC 60747-5-2. 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 Min. Typ. Max. Unit

Climatic Classiﬁcation 40/100/21

Pollution Degree (DIN VDE 0110/1.89) 2 CTI Comparative Tracking Index 175 V

PR

V

IORM

V

IOTM

External Creepage 8 mm

External Clearance 7.4 mm

Insulation Thickness 0.5 mm

T

Case

I

S,INPUT

P

S,OUTPUT

R

IO

Installation Classiﬁcations per DIN VDE 0110/1.89 Table 1 For Rated Mains Voltage < 150Vrms I–IV For Rated Mains Voltage < 300Vrms I–IV For Rated Mains Voltage < 450Vrms I–III For Rated Mains Voltage < 600Vrms I–III For Rated Mains Voltage < 1000Vrms (Option T, TS) I–III

Input to Output Test Voltage, Method b, V

x 1.875 = V

IORM

, 100% Production Test with

PR

2651

tm = 1 sec., Partial Discharge < 5pC Input to Output Test Voltage, Method a,

V

IORM

x 1.5 = V

, Type and Sample Test with

PR

2121

tm = 60 sec.,Partial Discharge < 5 pC Max Working Insulation Voltage 1,414 V Highest Allowable Over Voltage 6000 V

External Clearance (for Option T or TS - 0.4” Lead Spacing) 10.16 mm

Safety Limit Values – Maximum Values Allowed in the Event of a Failure

Case Temperature 150 °C Input Current 25 mA Output Power (Duty Factor ≤ 2.7%) 250 mW Insulation Resistance at T

, V

= 500V 10

S

IO

9

Ω

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

peak

≥

≤

Ω

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

Absolute Maximum Ratings

(T

= 25ºC unless otherwise speciﬁed)

A

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 Parameter Value Units

T

STG

T

OPR

T

J

T

SOL

I

F(AVG)

I

F(PEAK)

f Operating Frequency

V

R

I

O(PEAK)

V

– V

CC

EE

V

O(PEAK)

t

, t

R(IN)

F(IN)

PD

I

PD

O

Storage Temperature -55 to +125 ºC Operating Temperature -40 to +100 ºC Junction Temperature -40 to +125 ºC Lead Wave Solder Temperature

260 for 10sec ºC

(refer to page 21 for reﬂow solder proﬁle) Average Input Current 25 mA Peak Transient Forward Current

(11)

(10)

1A

50 kHz Reverse Input Voltage 5 V Peak Output Current Supply Voltage 0 to 35

Peak Output Voltage 0 to V

(1)

T

90°C 0 to 30

A

3.0 A

CC

V

V Input Signal Rise and Fall Time 500 ns Input Power Dissipation Output Power Dissipation

(2)(4)

(3)(4)

45 mW

250 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 Parameter Value Units

V

CC

I

F(ON)

V

F(OFF)

T

A

– V

EE

Ambient Operating Temperature -40 to +100 °C

Power Supply 15 to 30 V

Input Current (ON) 7 to 16 mA

Input Voltage (OFF) 0 to 0.8 V

Isolation Characteristics

Apply over all recommended conditions, typical value is measured at T

Symbol Parameter Conditions Min. Typ. Max. Units

V

ISO

R

ISO

C

ISO

Input-Output Isolation Voltage

Isolation Resistance V Isolation Capacitance V

T

= 25ºC, R.H.< 50%, t = 1.0min,

A

I

10µA, 50Hz

I-O

= 500V

I-O

= 0V, Freq = 1.0MHz

I-O

(5)(6)

(5)

A

(5)

= 25ºC

5000 V

11

10

1pF

RMS

Electrical Characteristics

Apply over all recommended conditions, typical value is measured at V unless otherwise speciﬁed.

Symbol Parameter Conditions Min. Typ. Max. Units

V

(V

F

BV

C I

OH

I

V

I

CCH

I

CCL

I

FLH

V

UVLO+

V

UVLO–

UVLO

Input Forward Voltage I

F

/ T

)Temperature Coefﬁcient of

A

Forward Voltage Input Reverse Breakdown

R

Voltage Input Capacitance f = 1MHz, VF = 0V 60 pF

IN

High Level Output Current

Low Level Output Current

OL

High Level Output Voltage IF = 10mA, IO = -2.5A VCC – 6.25V VCC – 2.5V V

OH

Low Level Output Voltage IF = 0mA, IO = 2.5A VEE + 2.5V VEE + 6.25V V

OL

(1)

High Level Supply Current VO = Open, IF = 7 to 16mA 2.8 3.8 mA Low Level Supply Current VO = Open, VF = 0 to 0.8V 2.8 3.8 mA Threshold Input Current

Low to High Threshold Input Voltage

FHL

High to Low Under Voltage Lockout

Threshold

Under Voltage Lockout

HYS

Threshold Hysteresis

= 10mA 1.2 1.5 1.8 V

F

I

= 10µA 5 V

R

V

= V

– 3V -1 -2.0 -2.5 A

O

CC

= VCC – 6V -2.0 -2.5

V

O

VO = V V

O

I

F

I

F

+ 3V 1 2.0 2.5 A

EE

= VEE + 6V 2.0 2.5

= 10mA, IO = -100mA VCC – 0.25V VCC – 0.1V

= 0mA, IO = 100mA VEE + 0.1V VEE + 0.25V

IO = 0mA, VO > 5V 2.3 5.0 mA

IO = 0mA, VO < 5V 0.8 V

IF = 10mA, VO > 5V 11.5 12.7 13.5 V IF = 10mA, VO < 5V 10.0 11.2 12.0 V

= 30V, V

CC

= Ground, T

EE

= 25°C

A

-1.8 mV/ºC

1.5 V

∆

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

Switching Characteristics

Apply over all recommended conditions, typical value is measured at V unless otherwise speciﬁed.

Symbol Parameter Conditions Min. Typ. Max. Units

= 30V, VEE = Ground, TA = 25°C

CC

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

t

PHL

t

PLH

Propagation Delay Time to Logic Low Output

Propagation Delay Time to Logic

IF = 7mA to 16mA, Rg = 10Ω, Cg =10nF, f = 10kHz, Duty Cycle = 50%

150 275 400 ns

150 255 400 ns

High Output

PWD Pulse Width Distortion,

| t

– t

PLH

|

PHL

– t

PDD

(Skew)

t

r

t

f

t

UVLO ON

t

UVLO OFF

| CM

H

PHL

Propagation Delay Difference Between Any Two Parts or Channels, (t

Output Rise Time (10% – 90%) 60 ns

Output Fall Time (90% – 10%) 60 ns

UVLO Turn On Delay IF = 10mA , VO > 5V 1.6 µs

UVLO Turn Off Delay IF = 10mA , VO < 5V 0.4 µs

| Common Mode Transient

Immunity at Output High

| Common Mode Transient

| CM

L

Immunity at Output Low

PLH

-250 250 ns

(7)

)

TA = 25°C, VCC = 30V, I

= 7 to 16mA, VCM = 2000V

F

TA = 25°C, VCC = 30V, VF = 0V, V

= 2000V

CM

(9)

35 50 kV/µs

(8)

35 50 kV/µs

20 100 ns

Notes:

1. Maximum pulse width = 10µs, maximum duty cycle = 1.1%

2. Derate linearly above 87°C, free air temperature at a rate of 0.77mW/°C

3. No derating required across temperature range.

4. Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected to conditions outside these ratings.

5. Device is considered a two terminal device: Pins 2 and 3 are shorted together and Pins 5, 6, 7 and 8 are shorted together.

6. 5,000 V

for 1 minute duration is equivalent to 6,000 VAC

RMS

7. The difference between t

PHL

and t

between any two FOD3120 parts under same test conditions.

PLH

for 1 second duration.

RMS

8. Common mode transient immunity at output high is the maximum tolerable negative dVcm/dt on the trailing edge of the common mode impulse signal, Vcm, to assure that the output will remain high (i.e. V

> 15.0V).

O

9. Common mode transient immunity at output low is the maximum tolerable positive dVcm/dt on the leading edge of the common pulse signal, Vcm, to assure that the output will remain low (i.e. V

10. Pulse Width, P

11. Exponential Waveform, I

≤ 1µs, 300pps

W

O(PEAK)

≤ | 2.5A | (≤ 0.3µs)

< 1.0V).

O

Typical Performance Curves

FOD3120 — High Noise Immunity, 2.5A Output Current, Gate Drive Optocoupler

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

0.5

0.0

-0.5

-1.0

-1.5

-2.0

)-OU TPUT HIGH VOLTAGE DROP ( V)

CC

-2.5

-V

OH

-3.0

(V

0. 0 0.5 1.0 1.5 2.0 2.5

T

=25°C

A

TA=-40°C

T

=100°C

A

Frequency = 250Hz Duty Cycle = 0.1%

=7to 16mA

I

F

V

=15to30V

CC

=0V

V

EE

IOH-OUTPUTHIGHCURRENT (A )

Fig. 3 Output High Current vs. Ambient Temperature Fig. 4 Output High Current vs. Ambient Temperature

8

f=200 Hz DUTY CYCLE = 0.2%

=7to16m A

I

F

R

=5Ωto G ND

g

6

= 30V

V

CC

4

V

= 15V

CC

2

–OUTPUT H IGH CURRE NT (A)

OH

I

0

-4 0 -2 0 0 20 406080100

TA–AMBIENTTEMPERATURE (°C)

0.00 VCC=15Vto 30V

V

=0V

EE

I

=7mAto16mA

F

-0.0 5 =-100mA

I

O

-0.1 0

-0.1 5

-0.2 0

)-HIGHOUTPUTVOLTAGE DROP (V)

-0.2 5

CC

-V

OH

-0.3 0

(V

-40 -2 0 0 20 406080100

TA-AMBIENTTEMPERATURE (°C)

5

f=100Hz DUTY CYCLE = 0.5%

=7to16mA

I

F

=10Ωto GND

R

g

4

3

V

= 30V

CC

2

= 15V

V

CC

–OUTPUTHIGHCURRENT (A)

1

OH

I

0

-4 0 - 20 0 2 0 406080100

TA–AMBIENTTEMPERATUR E (°C)

Fig. 2 Output High Voltage Drop vs. Ambient Temperature

Fig. 5 Output Low Voltage vs. Output Low Current

4

Fr equency = 250Hz Duty Cycle = 99.9%

=-3. 0V to 0.8V

V

F(O FF)

V

=15Vto 30V

CC

V

=0V

EE

3

T

=25° C

A

T

= 100°C

A

Fig. 6 Output Low Voltage vs. Ambient Temperature

0.2 5 VCC=15Vto30V

V

=0V

EE

=-3Vto0.8 V

V

F(OFF)

I

=100mA

O

0.2 0

0.1 5

2

0.1 0

1

-OUTPUT LOWVOLTAGE (V)

OL

V

0

0. 0 0. 5 1.0 1.5 2.0 2.5

TA=-40°C

IOL-OUTPUTLOWCU RRENT (A)

-OUTPUTLOWVOLTAGE (V)

0.0 5

OL

V

0.0 0

-40 -20 0 20 406080100

TA-AMBIENTTEMPERA TURE (°C)