FAN7313 [FAIRCHILD]
LCD Backlight Inverter Drive IC; LCD背光逆变器驱动IC型号: | FAN7313 |
厂家: | FAIRCHILD SEMICONDUCTOR |
描述: | LCD Backlight Inverter Drive IC |
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 |
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
20-SOIC
Pb-Free
Yes
Operating Temperature Range Packing Method
Rail
-25°C ~ 85°C
FAN7313MX
Yes
Tape & Reel
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com
Internal Block Diagram
+
-
1.25V
DRV 6V
VREF
ENA
VIN
Internal
Voltage
Reference
1μA
VIN
+
-
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
VB
FAULT
Positive dimming polarity
BDIM
max. 2V
FAULT
VBURST
BDIM
Controller
2.3V
OUTH
min. 0.5V
BCT/FT
VS
Drivers
0.45*Va
+
-
Input
Control
Logic
VREF
OUTL
GND
VSS_STK
-
FB
Output
Control
Logic
2.2V
+
+
ADIM
Va
max. 2V
Error Amp.
min. 0.5V
VSS_STK
CMP
OSC
RT
VSS_STK
Frequency sweep 4ms
Fstrike: Fnormal = 1.3:1
OLP1
OLP3
-
-
20μA
20μA
20μA
1V
1V
1V
+
+
OLP2
OLP4
-
-
20μA
1V
+
+
FAN7313 Rev. 01
Figure 1. Functional Block Diagram of FAN7313
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com
2
Pin Assignments
OLP3 OLP4 OLR BCT/FT RT
SCP
15
VS
14
OUTH
13
VB
12
VIN
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
VREF
BDIM
FAN7313 Rev. 00
Figure 2. Pin Configuration (Top View)
Pin Definitions
Pin #
Name
OLP1
OLP2
CMP
FB
Description
Pin #
11
Name
VIN
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
VB
Connected to VREF Internally
High-Side Driver Output
Connected to GND Internally
Short-Circuit Protection
Timing Resistor
13
OUTH
VS
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
VREF
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
© 2006 Fairchild Semiconductor Corporation
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, TA=25°C and VIN=18V. For min./max. values, TA is the operating ambient temperature range with
-25°C ≤ TA ≤ 85°C and 4.5V ≤ VIN ≤ 25.5V, unless otherwise specified.
Symbol
VIN
Characteristics
Supply Voltage
Value
25.5
Unit
V
TA
Operating Temperature Range
Junction Temperature
-25 ~ 85
150
°C
TJ
°C
TSTG
θJA
Storage Temperature Range
Thermal Resistance Junction-to-Ambient (1)(2)
Power Dissipation
-65 ~ 150
70
°C
°C/W
W
PD
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
10
4
Unit
No
11
12
13
14
15
16
17
18
19
20
Name
VIN
Max.
25.5
10
Unit
2
VB
3
OUTH
VS
6
4
10
10
10
10
5
BDIM
ADIM
ENA
SCP
RT
10
V
V
6
7
BCT/FT
OLR
OLP4
OLP3
8
GND
OUTL
VREF
10
10
10
9
6
10
10
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com
4
Electrical Characteristics
For typical values, TA=25°C and VIN=18V. For min./max. values, TA is the operating ambient temperature range with
-25°C ≤ TA ≤ 85°C and 4.5V ≤ VIN ≤ 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
V
V6line 6V Line Regulation
V6load 6V Load Regulation
OSCILLATOR SECTION (MAIN)
0<I6<10mA
0
0.1
TA=25°C, RT=27kΩ
RT=27kΩ
97.5 100.0 103.7 KHz
fosc
Oscillation Frequency(4)
96
100
2.0
0.5
104
KHz
V
Vcth
Vctl
CT High-Voltage(3)
CT Low-Voltage(3)
V
TA=25°C, RT=27kΩ
RT=27kΩ
125.7 130 135.6 kHz
fstr
Striking Frequency(4)
124
130
4
136
KHz
ms
V
Tstoff
Vfbth
Strike-Off Delay Time
FB Threshold Voltage
ADIM=1
0.35
0.45
0.55
OSCILLATOR SECTION (BURST)
TA=25°C, BCT/FT=10nF, RT=27kΩ 301.6 318 332.5
Hz
Hz
V
foscb
Oscillation Frequency
BCT/FT=10nF, RT=27kΩ
BCT/FT=10nF, RT=27kΩ
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
Vbcth
Vbctl
Vbctft
BCT/FT High-Voltage
BCT/FT Low-Voltage
BCT/FT Fault-Voltage
V
V
ERROR AMPLIFIER SECTION
Gm
AV
Error Amplifier Transconductance(3) ADIM=1~2.2V
Error Amplifier Open-Loop Gain(3)
100
360
59
600 µmho
dB
TA=25°C, ADIM > 2.2V
ADIM > 2.2V
2.119 2.150 2.195
2.086 2.150 2.215
V
V2p2
2.2V Regulation Voltage
V
Iss
lsin
lsur
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
µA
µA
CMP=1V, 0.45*ADIM < FB < ADIM
-67
300
60
50
Gmolr OLR Transconductance(3)
719
190
260
1300 µmho
Striking, OLR=2.5V
Normal, OLR=2.5V
300
400
µA
µA
Iolr Open-Lamp Regulation Current
60
UNDER-VOLTAGE LOCK OUT SECTION
Vth Start Threshold Voltage
Vthhys Start Threshold Voltage Hysterisis
3.9
0.20
20
4.2
0.45
55
4.5
0.60
120
2.5
V
V
Ist
Iop
Isb
Start-up Current
VIN=Vth-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.
© 2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN7313 Rev. 1.0.0
5
Electrical Characteristics (Continued)
For typical values TA=25°C and VIN=18V. For min./max. values, TA is the operating ambient temperature range with
-25°C ≤ TA ≤ 85°C and 4.5V ≤ VIN ≤ 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
Vscp
Short-Circuit Protection Voltage
FB=OLP=2V
1.9
2.1
2.0
2.3
2.1
2.5
V
V
Vcmpr CMP Protection Voltage
Volp
Vovp
Volr
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
V
Open-Lamp Regulation Voltage
V
Volrhy Opem-Lamp Regulation Hystersis(5)
250
2.0
mV
µsec
µsec
sec
µsec
sec
sec
µsec
°C
Striking, Foscb=300Hz
Normal, Fosc=100kHz
Striking, Foscb=300Hz
Normal Fosc=100kHz
Foscb=300Hz
1.7
100
1.7
100
1.7
1.7
100
2.3
500
2.3
Tscp
Short-Circuit Protection Delay
300
2.0
Tcmp
Tolp
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
Tolr
300
150
TSD
ENABLE SECTION
Vena
Vdis
Iena
Enable State Input Voltage
2
5
V
V
Disable State Input Voltage
Enable Discharge Current
0.7
4.0
0.2
1.0
µA
OUTPUT SECTION
fnrmo
Output Normal Frequency(6)
fstro
VFB=1V, RT=27kΩ
VFB=0V, RT=27kΩ
48
62
50
65
52
68
KHz
KHz
V
Output Striking Frequency(6)
Vuvh
Vuvl
Venh
Venl
High-Side Output Voltage Before Start-up
Low-Side Output Voltage Before Start-up
High-Side Output Voltage at Vena=0V
Low-Side Output Voltage at Vena=0V
-0.5
-0.5
-0.5
-0.5
5.5
5.5
0.5
0.5
0.5
0.5
6.5
6.5
V
V
V
OUTH High-Side Output Voltage
6.0
6.0
V
OUTL Low-Side Output Voltage
V
Idsurh High-Side Output Drive Soure Current(5) VIN=18V
Idsinh High-Side Output Drive Sink Current(5)
VIN=18V
Low-Side Output Drive Soure Current(5) VIN=18V
530
530
530
530
100
100
100
100
430
mA
mA
mA
mA
nsec
nsec
nsec
nsec
nsec
Idsurl
Idsinl
trh
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
VIN=18V
VIN=18V, Cload=4.7nF
VIN=18V, Cload=4.7nF
VIN=18V, Cload=4.7nF
VIN=18V, Cload=4.7nF
tfh
trl
tfl
tdead
Notes:
5. These parameters, although guaranteed, are not 100% tesed in production.
6. Output frequency is half fosc
.
© 2006 Fairchild Semiconductor Corporation
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
© 2006 Fairchild Semiconductor Corporation
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
0
0
0
0
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
100k
M1
1
2
HOT
CN2
0
0
SN
GN
SN
GN
DN
DN
DN
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
BAV70
C13
1u
0
R8
100k
R9
100k
0
0
0
0
0
0
0
0
TX1
R22
1
2
HOT
100k
??
CN4
OLP1 OLP2
REF
C23
10n
R23
100k
CCFL
0
R13
10K
COLD
R12
120k
0
0
1
2
HOT
R10
10k
CN3
C14
10n
R11
8.2k
CCFL
C16
COLD
C15
15p
15p
0
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
0
0
0
0
0
R21
8.2k
0
C20
1n
R19
10k
FAN7313 Rev:00
0
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
1KHz, 1V
1KHz, 1V
1 UEW 0.35 φ
1 UEW 0.35 φ
1 UEW 0.04 φ
50µH
50µH
1.2µH
1.2µH
260mH
19
2300
826mH
© 2006 Fairchild Semiconductor Corporation
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
12nF
33nF
1µF
Description / Vendor
50V 1608 K
50V 1608 K
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 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 F
1608 J
1608 J
1608 J
1608 J
100kΩ
100kΩ
1kΩ
10nF
15pF
15pF
10nF
12nF
12nF
1nF
R3
R4
3KV 3216
R5
1kΩ
50V 1608 K
50V 1608 K
50V 1608 K
50V 1608 K
50V 1608 K
50V 2012 K
50V 1608 K
50V 2012 K
50V 2012 K
R6
680Ω
R7
680Ω
R8
100kΩ
100kΩ
10kΩ
R9
4.7nF
330pF
10nF
2.2nF
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
Fairchild
Fairchild
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
3216 J
Wafer (SMD)
35001WR-02A
35001WR-02A
35001WR-02A
35001WR-02A
12505WR-10
33Ω
CN1
CN2
CN3
CN4
CN5
33Ω
Capacitor (SMD)
C2
C3
C5
C8
C9
1µF
1µF
50V 2012 K
50V 2012 K
50V 1608 K
3KV 3216
10nF
15pF
15pF
Transformer (SMD)
EFD2124
TX1
TX2
3KV 3216
EFD2124
© 2006 Fairchild Semiconductor Corporation
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
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
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
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com
10
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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
© 2006 Fairchild Semiconductor Corporation
FAN7313 Rev. 1.0.0
www.fairchildsemi.com
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