FAN7313M_技术文档

September 2006

FAN7313

LCD Backlight Inverter Drive IC

Features

Description

High-Efficiency Single-Stage Power Conversion

Wide Input Voltage Range: 4.5V to 25.5V

Backlight Lamp Ballast and Soft Dimming

Reduces Required External Components

Precision Voltage Reference Trimmed to 2%

Push-Pull Topology

FAN7313 provides all the control functions for a series

parallel resonant converter as well as a pulse width mod-

ulation (PWM) controller to develop a supply voltage.

Typical operating frequency range is between 30kHz and

250kHz, depending on the cold cathode fluorescent

lamp (CCFL) and the transformer’s characteristics.

Soft-Start Capability

PWM Control at Fixed Frequency

Analog and Burst Dimming Functions

Open-Lamp Protection

20-SOIC

Open-Lamp Regulation

Over-Voltage Protection

Short-Circuit Protection

20-Pin SOIC

Applications

LCD TV

LCD Monitor

Ordering Information

Part Number

FAN7313M

Package

20-SOIC

Pb-Free

Yes

Operating Temperature Range Packing Method

Rail

-25°C ~ 85°C

FAN7313MX

Yes

Tape & Reel

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

Internal Block Diagram

+

-

1.25V

DRV 6V

V_REF

ENA

V_IN

Internal

Voltage

Reference

1μA

V_IN

+

-

UVLO

UVLO 4.5V

+

-

3V

2V

Timer

+

-

SCP

+

16 switching

cycles @ Normal

2V

0.25V

-

2s @ Strike

Gm Amp. with only

sink current

OLR

-

150 °C

TSD

Protection

2V

+

Disable @ Striking

V_B

FAULT

Positive dimming polarity

BDIM

max. 2V

FAULT

V_BURST

BDIM

Controller

2.3V

OUTH

min. 0.5V

BCT/FT

V_S

Drivers

0.45*Va

+

-

Input

Control

Logic

V_REF

OUTL

GND

V_{SS_STK}

-

FB

Output

Control

Logic

2.2V

+

ADIM

Va

max. 2V

Error Amp.

min. 0.5V

V_{SS_STK}

CMP

OSC

RT

V_{SS_STK}

Frequency sweep 4ms

F_strike: F_normal= 1.3:1

OLP1

OLP3

-

20μA

1V

+

OLP2

OLP4

-

20μA

1V

+

FAN7313 Rev. 01

Figure 1. Functional Block Diagram of FAN7313

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

2

Pin Assignments

OLP3 OLP4 OLR BCT/FT RT

SCP

15

V_S

14

OUTH

13

V_B

12

V_IN

11

20

19

18

17

16

FAN7313

1

2

3

4

5

6

7

8

9

10

OLP1 OLP2

CMP

FB

ADIM

ENA

GND OUTL

V_REF

BDIM

FAN7313 Rev. 00

Figure 2. Pin Configuration (Top View)

Pin Definitions

Pin #

Name

OLP1

OLP2

CMP

FB

Description

Pin #

11

Name

V_IN

Description

1

2

3

4

5

6

7

Open-Lamp Protection 1

Open-Lamp Protection 2

Error Amplifier Output

Error Amplifier Input

Supply Voltage

12

V_B

Connected to V_REFInternally

High-Side Driver Output

Connected to GND Internally

Short-Circuit Protection

Timing Resistor

13

OUTH

V_S

14

BDIM

ADIM

ENA

Burst Dimming Input

Analog Dimming Input

15

SCP

RT

16

17

BCT/FT

Burst Dimming Timing Capacitor/

Fault Signal Output

Enable Input

8

9

GND

OUTL

V_REF

Ground

18

19

20

OLR

OLP4

OLP3

Open-Lamp Regulation

Open-Lamp Protection 4

Open-Lamp Protection 3

Low-Side Driver Output

Reference Voltage

10

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

3

Absolute Maximum Ratings

The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The

device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are

not guaranteed at the absolute maximum ratings.

For typical values, T_A=25°C and V_IN=18V. For min./max. values, T_Ais the operating ambient temperature range with

-25°C ≤ T_A≤ 85°C and 4.5V ≤ V_IN≤ 25.5V, unless otherwise specified.

Symbol

V_IN

Characteristics

Supply Voltage

Value

25.5

Unit

V

T_A

Operating Temperature Range

Junction Temperature

-25 ~ 85

150

°C

T_J

°C

T_STG

θ_JA

Storage Temperature Range

Thermal Resistance Junction-to-Ambient ⁽¹⁾⁽²⁾

Power Dissipation

-65 ~ 150

70

°C

°C/W

W

P_D

1.8

Notes:

1. Thermal resistance test board size: 76.2 * 114.3 * 1.6mm (1S0P). JEDEC standard: JESD51-2, JESD51-3.

2. Assume no ambient airflow.

Pin Breakdown Voltage

No

1

Name

OLP1

OLP2

CMP

FB

Max.

10

4

Unit

No

11

12

13

14

15

16

17

18

19

20

Name

V_IN

Max.

25.5

10

Unit

2

V_B

3

OUTH

V_S

6

4

10

5

BDIM

ADIM

ENA

SCP

RT

10

V

6

7

BCT/FT

OLR

OLP4

OLP3

8

GND

OUTL

V_REF

10

9

6

10

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

4

Electrical Characteristics

For typical values, T_A=25°C and V_IN=18V. For min./max. values, T_Ais the operating ambient temperature range with

-25°C ≤ T_A≤ 85°C and 4.5V ≤ V_IN≤ 18V, unless otherwise specified. Specifications to -25°C ~ 85°C are guaranteed by

design based on final characterization results.

Symbol

Characteristics

Test Condition

Min. Typ. Max. Unit

REFERENCE SECTION

V₆

6V Regulation Voltage

5.76

0

6.00

6.24

0.1

V

V_6line6V Line Regulation

V_6load6V Load Regulation

OSCILLATOR SECTION (MAIN)

0<I6<10mA

0

0.1

T_A=25°C, RT=27kΩ

RT=27kΩ

97.5 100.0 103.7 KHz

f_osc

Oscillation Frequency⁽⁴⁾

96

100

2.0

0.5

104

KHz

V

V_cth

V_ctl

CT High-Voltage⁽³⁾

CT Low-Voltage⁽³⁾

V

T_A=25°C, RT=27kΩ

RT=27kΩ

125.7 130 135.6 kHz

f_str

Striking Frequency⁽⁴⁾

124

130

4

136

KHz

ms

V

T_stoff

V_fbth

Strike-Off Delay Time

FB Threshold Voltage

ADIM=1

0.35

0.45

0.55

OSCILLATOR SECTION (BURST)

T_A=25°C, BCT/FT=10nF, RT=27kΩ 301.6 318 332.5

Hz

V

f_oscb

Oscillation Frequency

BCT/FT=10nF, RT=27kΩ

296

1.9

0.4

3.5

318

2.0

0.5

4.0

340

2.1

0.6

4.5

V_bcth

V_bctl

V_bctft

BCT/FT High-Voltage

BCT/FT Low-Voltage

BCT/FT Fault-Voltage

V

ERROR AMPLIFIER SECTION

G_m

A_V

Error Amplifier Transconductance⁽³⁾ADIM=1~2.2V

Error Amplifier Open-Loop Gain⁽³⁾

100

360

59

600 µmho

dB

T_A=25°C, ADIM > 2.2V

ADIM > 2.2V

2.119 2.150 2.195

2.086 2.150 2.215

V

V_2p2

2.2V Regulation Voltage

V

I_ss

l_sin

l_sur

Soft-Start Current

CMP Sink Current

CMP Source Current

CMP=2V, FB < 0.45*ADIM

CMP=1V, ADIM < FB

-3.2

44

-1.7

73

-1.2

100

-33

µA

CMP=1V, 0.45*ADIM < FB < ADIM

-67

300

60

50

G_molrOLR Transconductance⁽³⁾

719

190

260

1300 µmho

Striking, OLR=2.5V

Normal, OLR=2.5V

300

400

µA

I_olrOpen-Lamp Regulation Current

60

UNDER-VOLTAGE LOCK OUT SECTION

V_thStart Threshold Voltage

V_thhysStart Threshold Voltage Hysterisis

3.9

0.20

20

4.2

0.45

55

4.5

0.60

120

2.5

V

I_st

I_op

I_sb

Start-up Current

V_IN=V_th-0.2

Not switching

ENA=0

µA

mA

µA

Operating Supply Current

Stand-by Current

0.5

60

1.5

100

150

Notes:

3. These parameters, although guranteed, are not 100% tesed in production.

4. These parameters, although guranteed, are tested in only EDS test.

www.fairchildsemi.com

FAN7313 Rev. 1.0.0

5

Electrical Characteristics (Continued)

For typical values T_A=25°C and V_IN=18V. For min./max. values, T_Ais the operating ambient temperature range with

-25°C ≤ T_A≤ 85°C and 4.5V ≤ V_IN≤ 18V, unless otherwise specified. Specifications to -25°C ~ 85°C are guaranteed by

design based on final characterization results.

Symbol Characteristics

PROTECTION SECTION

Test Condition

Min. Typ. Max. Unit

V_scp

Short-Circuit Protection Voltage

FB=OLP=2V

1.9

2.1

2.0

2.3

2.1

2.5

V

V_cmprCMP Protection Voltage

V_olp

V_ovp

V_olr

Open-Lamp Protection Voltage

Over-Voltage Protection

0.95

2.85

1.9

1.00

3.00

2.0

1.08

3.15

2.1

V

Open-Lamp Regulation Voltage

V

V_olrhyOpem-Lamp Regulation Hystersis⁽⁵⁾

250

2.0

mV

µsec

sec

µsec

sec

µsec

°C

Striking, F_oscb=300Hz

Normal, F_osc=100kHz

Striking, F_oscb=300Hz

Normal F_osc=100kHz

F_oscb=300Hz

1.7

100

1.7

100

1.7

100

2.3

500

2.3

T_scp

Short-Circuit Protection Delay

300

2.0

T_cmp

T_olp

CMP Protection Delay

300

2.0

500

2.3

Open-Lamp Protection Delay

Open-Lamp Regulation Delay

Thermal Shutdown

Striking, OLR=2.5V

Normal, OLR=2.5V

2.0

2.3

500

T_olr

300

150

TSD

ENABLE SECTION

V_ena

V_dis

I_ena

Enable State Input Voltage

2

5

V

Disable State Input Voltage

Enable Discharge Current

0.7

4.0

0.2

1.0

µA

OUTPUT SECTION

f_nrmo

Output Normal Frequency⁽⁶⁾

f_stro

V_FB=1V, RT=27kΩ

V_FB=0V, RT=27kΩ

48

62

50

65

52

68

KHz

V

Output Striking Frequency⁽⁶⁾

V_uvh

V_uvl

V_enh

V_enl

High-Side Output Voltage Before Start-up

Low-Side Output Voltage Before Start-up

High-Side Output Voltage at V_ena=0V

Low-Side Output Voltage at V_ena=0V

-0.5

5.5

0.5

6.5

V

OUTH High-Side Output Voltage

6.0

V

OUTL Low-Side Output Voltage

V

I_dsurhHigh-Side Output Drive Soure Current⁽⁵⁾V_IN=18V

I_dsinhHigh-Side Output Drive Sink Current⁽⁵⁾

V_IN=18V

Low-Side Output Drive Soure Current⁽⁵⁾V_IN=18V

530

100

430

mA

nsec

I_dsurl

I_dsinl

t_rh

Low-Side Output Drive Sink Current⁽⁵⁾

High-Side Output Rising Time⁽⁵⁾

High-Side Output Falling Time⁽⁵⁾

Low-Side Output Rising Time⁽⁵⁾

Low-Side Output Falling Time⁽⁵⁾

Dead Time

V_IN=18V

V_IN=18V, C_load=4.7nF

t_fh

t_rl

t_fl

t_dead

Notes:

5. These parameters, although guaranteed, are not 100% tesed in production.

6. Output frequency is half f_osc

.

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

6

Timing Diagram

CMP

CT

CLK

T

OUTH

OUTL

FAN7313 Rev. 01

Figure 3. Push-Pull PWM Control Waveforms

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

7

Typical Application Circuits

Application

Lamps

Input Voltage

19-inch LCD Monitor

4

13V

1. Schematic

F1

FUSE

C1

220u

C3

1u

C2

1u

OLP3 OLP4 OLR

0

TX1

0

R29

33

1

2

R28

33

HOT

CN1

CCFL

COLD

R1

27k

R2

R3

C5

10n

C25

2.2n

C24

2.2n

100k

M1

1

2

HOT

CN2

0

SN

GN

SN

GN

DN

CCFL

C8

15p

COLD

IC1

FAN7313

C9

C22

330p

15p

OLP1

D3

OLP2

D2

CN5

1

2

3

4

5

6

7

8

9

10

HUFA76413DK8

C12

33n

R6

680

R7

680

C11

12n

C10

12n

R4

1k

R5

1k

BAV70

C13

1u

0

R8

100k

R9

100k

0

TX1

R22

1

2

HOT

100k

??

CN4

OLP1 OLP2

REF

C23

10n

R23

100k

CCFL

0

R13

10K

COLD

R12

120k

0

1

2

HOT

R10

10k

CN3

C14

10n

R11

8.2k

CCFL

C16

COLD

C15

15p

0

OLP3

OLP4

R20

10k

D5

D4

C17

10n

C18

12n

OLR

R14

1k

R15

1k

R17

680

R16

680

C19

12n

0

BAV70

R18

100k

BAV70

C21

4.7n

0

R21

8.2k

0

C20

1n

R19

10k

FAN7313 Rev:00

0

Figure 4. Typical Application Circuit

2. Transformer Schematic Diagram

Supported by Namyang electronics (http://www.namyangelec.co.kr).

FAN7313 Rev. 00

Figure 5. Transformer Schematic

3. Core & Bobbin

Core: EFD2124

Material: PL7

Bobbin: EFE2124

4. Winding Specification

Pin No.

6 --> 4

3 --> 5

7 --> 9

Wire

Turns

19

Inductance Leakage Inductance

Remarks

1KHz, 1V

1 UEW 0.35 φ

1 UEW 0.04 φ

50µH

1.2µH

260mH

19

2300

826mH

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

8

5. BOM of the Application Circuit

Part Ref.

Value

Description / Vendor

Part Ref.

C10

C11

Value

12nF

33nF

1µF

Description / Vendor

50V 1608 K

50V 2012 K

50V 1608 K

3KV 3216

Fuse

F1

24V 3A

Fuse

Resistor (SMD)

27kΩ

C12

C13

C14

C15

C16

C17

C18

C19

C20

C21

C22

C23

C24

C25

R1

R2

1608 J

1608 F

1608 J

100kΩ

1kΩ

10nF

15pF

10nF

12nF

1nF

R3

R4

3KV 3216

R5

1kΩ

50V 1608 K

50V 2012 K

50V 1608 K

50V 2012 K

R6

680Ω

R7

680Ω

R8

100kΩ

10kΩ

R9

4.7nF

330pF

10nF

2.2nF

R10

R11

R12

R13

R14

R15

R16

R17

R18

R19

R20

R21

8.2kΩ

120kΩ

10kΩ

1kΩ

Diode / TR (SMD)

BAV70

1kΩ

D2

D3

D4

D5

Fairchild

680Ω

BAV70

680Ω

BAV70

100kΩ

10kΩ

BAV70

Electrolytic Capacitor

220µF

10kΩ

C1

M1

25V

8.2kΩ

MOSFET (SMD)

HUFA

76413DK8

R22

100kΩ

1608 J

Fairchild

R23

R28

R29

100kΩ

1608 J

3216 J

Wafer (SMD)

35001WR-02A

12505WR-10

33Ω

CN1

CN2

CN3

CN4

CN5

33Ω

Capacitor (SMD)

C2

C3

C5

C8

C9

1µF

50V 2012 K

50V 1608 K

3KV 3216

10nF

15pF

Transformer (SMD)

EFD2124

TX1

TX2

3KV 3216

EFD2124

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

9

Package Dimensions

20-SOIC

Dimensions are in millimeters unless otherwise noted.

Inches

Millimeters

Symbol

Notes

Min.

Max.

Min.

Max.

A

.093

.004

.013

.009

.496

.291

.104

.012

.020

.013

.512

.299

2.35

0.10

0.33

0.23

12.60

7.40

2.65

0.30

0.51

0.32

13.00

7.60

A1

B

C

D

E

5

2

e

.050 BSC

1.27 BSC

H

h

.394

.010

.016

.419

.029

.050

10.00

0.25

0.40

10.65

0.75

1.27

L

3

6

N

α

20

0°

8°

.004

0°

8°

0.10

ccc

Notes:

1. Dimensioning and tolerancing per ANSI Y14.5M-1982.

2. "D" and "E" do not include mold flash. Mold flash or

protrusions shall not exceed .010 inch (0.25mm).

3. "L" is the length of terminal for soldering to a substrate.

4. Terminal numbers are shown for reference only.

5. "C" dimension does not include solder finish thickness.

6. Symbol "N" is the maximum number of terminals.

20

11

E

H

1

10

D

h x 45°

A1

A

C

SEATING

PLANE

– C –

α

e

B

LEAD COPLANARITY

ccc C

L

January 2001, Rev. A

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

10

TRADEMARKS

The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an

exhaustive list of all such trademarks.

ACEx¥

GlobalOptoisolator¥

GTO¥

OCXPro¥

PSerDes¥

TinyBuck¥

OPTOLOGIC^®

SILENT SWITCHER^®

TinyLogic^®

ActiveArray¥

Bottomless¥

Build it Now¥

CoolFET¥

CROSSVOLT¥

DOME¥

EcoSPARK¥

E²CMOS¥

EnSigna¥

HiSeC¥

OPTOPLANAR¥

PACMAN¥

POP¥

Power247¥

PowerEdge¥

PowerSaver¥

PowerTrench^®

QFET^®

SMART START¥

SPM¥

Stealth¥

SuperFET¥

SuperSOT¥-3

SuperSOT¥-6

SuperSOT¥-8

SyncFET¥

TCM¥

TINYOPTO¥

TinyPower¥

TinyPWM¥

TruTranslation¥

UHC¥

I²C¥

i-Lo¥

ImpliedDisconnect¥

IntelliMAX¥

ISOPLANAR¥

LittleFET¥

MICROCOUPLER¥

MicroFET¥

MicroPak¥

MICROWIRE¥

MSX¥

UltraFET^®

UniFET¥

VCX¥

Wire¥

FACT¥

QS¥

FACT Quiet Series¥

QT Optoelectronics¥

Quiet Series¥

RapidConfigure¥

RapidConnect¥

ScalarPump¥

TinyBoost¥

FAST^®

FASTr¥

FPS¥

FRFET¥

Across the board. Around the world.¥

Programmable Active Droop¥

The Power Franchise^®

MSXPro¥

OCX¥

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS

HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE

APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER

ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S

WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR

SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems 2. A critical component in any component of a life support,

which, (a) are intended for surgical implant into the body or

(b) support or sustain life, and (c) whose failure to perform

when properly used in accordance with instructions for use

provided in the labeling, can be reasonably expected to

result in a significant injury of the user.

device, or system whose failure to perform can be

reasonably expected to cause the failure of the life

support device or system, or to affect its safety or

effectiveness.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification

Product Status

Definition

Advance Information

Formative or In

Design

This datasheet contains the design specifications for product

development. Specifications may change in any manner without

notice.

Preliminary

First Production

Full Production

Not In Production

This datasheet contains preliminary data; supplementary data will

be published at a later date. Fairchild Semiconductor reserves the

right to make changes at any time without notice to improve design.

No Identification Needed

Obsolete

This datasheet contains final specifications. Fairchild

Semiconductor reserves the right to make changes at any time

without notice to improve design.

This datasheet contains specifications on a product that has been

discontinued by Fairchild Semiconductor. The datasheet is printed

for reference information only.

Rev. I20

FAN7313 Rev. 1.0.0

www.fairchildsemi.com

11


型号：	FAN7313M
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	LCD Backlight Inverter Drive IC LCD背光逆变器驱动IC 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管驱动 CD
文件：	总11页 (文件大小：313K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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