fsc lcd backlight inverter ic solution
TRANSCRIPT
www.fairchildsemi.com
FSC LCD Backlight Inverter IC Solution
Lighting Product Line
Power Conversion
2
FSC Product Line - up
Vcc (V) Dimming Soft Start OLP OLR(=OVP) SCP Vout(Max) Iout(Max)
FAN7547A 1Ch. Buck-Royer 6 ~ 30 Analog, Burst O O O X Vcc 0.2A S
FAN7548 2Ch. Buck-Royer 9 ~ 30 Analog, Burst O O O X 13.5V 0.2A S
FAN7311/A/B P-N Full Bridge 5 ~ 25.5 Analog, Burst O O O X 8.5V 0.2A S
FAN7314/A P-N Half Bridge 5 ~ 25.5 Analog, Burst O O O X 8.5V 0.2A S
FAN7313 Push-Pull 4.5 ~ 25.5 Analog, Burst O Internal (4) O O 6V 0.5A S
FAN7316 N-N Half Bridge 4.5 ~ 24 Analog, Burst O Internal (4) O O 6V 0.5A S
FAN7317 P-N Full Bridge 6 ~ 24 Burst O Internal (4) Internal (4) SLP 6V 0.2/0.3A S
FAN7318 P-N Half Bridge 6 ~ 30 Analog, Burst O Internal (4) Internal (4) SLP 8V 0.3/0.4A D (P12)
3rd G FAN7320 H/B Switch Integration 9 ~ 25.5 Analog, Burst O Internal (4) Internal (4) SLP S
StatusFeatures
Generation Products Description
Ron=30mΩ
0 G
1st G
2nd G
3
Product Introduction
- FAN7313 (Push-pull) / FAN7316 (N-N Half-Bridge)
- FAN7317 (Full-Bridge)
New Product- FAN7318
4
FAN7313/6 Key Features
• Reduce external components
Wide Input Voltage Range : 4.5 ~ 25.5V (FAN7313),4.5 ~ 24V(FAN7316)
Integrated OLP circuit
• Various Protection
OLP, OLR, SCP, TSD, Soft-start, Arc Protection
• Design flexibility
Selectable Dimming Polarity
N-N Half-bridge & Push-pull topology
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 4.5 ~ 24V
5
Reduce External Components
• Wide Input Voltage Range : 4.5 ~ 24V
Can use common Vcc with IC input voltage
1 TR, 1 Zenor D, 2 Resister
• Integrated OLP Circuit
No need open lamp detection circuit
Reduce Feedback rectifier diode
1 TR, 5 Diode (3 BAV55,2 BAV70)
5 Capacitor, 1 Resister (@ 4Lamp)
IC_Vcc
IC_OLP
REF OLP circuit
6
OLP1
R6680
D4BAV70
R7680
0
SN1
GN1
DN1
DN1
GN2
SN2 DN2
DN2
M1
FDS6990A
0
C95p
0
C114.7n
0
0
TX1
C1410n
0
C7 10u
C6
0.1u
C21u
0
C1710n
11
22
CN1CCFL
11
22
CN2CCFL
11
22
CN3CCFL
11
22
CN4CCFL
C1220u
OLR
REF
0
R18100k
0
D1D1N4148
D3BAV70
D5BAV70
OLP1 OLP2
OLP3 OLP4
R141k
R151k
R41k
R51k
0 0
0 0
F1
FUSE
C4 10u
12345678910
CN5
??
R20
10k
R21
10k
C85p
C104.7n
C155p
C184.7n
IC1
FA
N7
31
6
FB
BD
IM
AD
IM
OL
P2
CM
P
GN
D
OL
P1
BC
T
OL
R
RT
OL
P4
OL
P3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
R2100k
R3100k
0
0
R9100k
R8100k
R13100k
C131u
C1233n
0
0
C194.7n
C31u
0
0
R16680
0
TX2
0
C165p
0
OLP3 OLP4
R17680
R22
100k
OLR
14V
R23N.C.
R19
10k
0
LTM190EX
C2310n
ON/OFF
DIM(0~3.3V)
C201n
0
C24
4.7n
0
0
0
0
0
R1275k
R119.1k
R1012k
C510n
R127k
0
0 00
D2BAV70
OLP2
0
FAN7316 – N-N Half-Bridge
Dual N MOS 1
Control IC 1
BOM
Can delete this
external IC - Vcc
regulation circuit
IC_Vcc
Reduce External Components
Can delete this external
OLP detection circuit
IC_OLP
REF OLP circuit
7
Reduce External Components
FAN7314 – P-N Half-Bridge
FAN7316 – N-N Half-Bridge
OLP1
R6680
D4BAV70
R7680
0
SN1
GN1
DN1
DN1
GN2
SN2 DN2
DN2
M1
FDS6990A
0
C95p
0
C114.7n
0
0
TX1
C1410n
0
C7 10u
C6
0.1u
C21u
0
C1710n
11
22
CN1CCFL
11
22
CN2CCFL
11
22
CN3CCFL
11
22
CN4CCFL
C1220u
OLR
REF
0
R18100k
0
D1D1N4148
D3BAV70
D5BAV70
OLP1 OLP2
OLP3 OLP4
R141k
R151k
R41k
R51k
0 0
0 0
F1
FUSE
C4 10u
12345678910
CN5
??
R20
10k
R21
10k
C85p
C104.7n
C155p
C184.7n
IC1
FA
N7
31
6
FB
BD
IM
AD
IM
OL
P2
CM
P
GN
D
OL
P1
BC
T
OL
R
RT
OL
P4
OL
P3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
R2100k
R3100k
0
0
R9100k
R8100k
R13100k
C131u
C1233n
0
0
C194.7n
C31u
0
0
R16680
0
TX2
0
C165p
0
OLP3 OLP4
R17680
R22
100k
OLR
14V
R23N.C.
R19
10k
0
LTM190EX
C2310n
ON/OFF
DIM(0~3.3V)
C201n
0
C24
4.7n
0
0
0
0
0
R1275k
R119.1k
R1012k
C510n
R127k
0
0 00
D2BAV70
OLP2
0
0
OLP1
R171k
D3BAV70
R161k
0
0
C1115p
0 C3012n
0 0
C2 1u
TX1
0
0
C2110n
R6 82k
C8 10u
C251u
0
0
0
0
D9
BAV99
C2810n
D7
BAV99
D6
BAV99
0
0
R99.1k
0
HOT1
COLD2
CN1CCFL
HOT1
COLD2
CN2CCFL
HOT1
COLD2
CN4CCFL
HOT1
COLD2
CN3CCFL
C22220u
25V or 35V
OLR
C26 1n
0
J1
0
RT
OLP
D10BAW56
REF
R14100k
OUTB
D1BAW56
RT
FB
R1330k
LTM190EX
SN
GN
SP
GP DP
DP
DN
DN
M2
FDS8958A
C6
1u
0
OLP2OLP1
OLP3 OLP4
R121k
R111k
R261k
REF
R131k
0 0
0 0
R15
10k
C91u
0
F1
FUSE
C7 10u
12345678910
CN5
12505WR-10
R24
10k
R27
10k
R25
10k
OUTA
C1015p
C1412n
C1215p
C2912n
IC1 FAN7314
S_S
GND
REF
OLR
ENA
BDIM
OLP
VIN
OUTA
PGND
OUTB
RT1
CT
OUTC
ADIM
EA_IN
EA_OUT
OUTD
RT
BCT
R2210k
R2310k
C192.2n
C202.2n
00
0
0
R2110k
R2010k
C182.2n
C172.2n
0
0
R7 0
R8
100k
Q1KST2222
0
C1512n
C271u
0
0
R181k
0
SN
GN
SP
GP DP
DP
DN
DN
M1
FDS8958A
0
TX2
FB
0
C1315p
0
OLP3 OLP4
D11BAW56
0
R191k
0
OLR
ON/OFF
14V
DIM(0~3.3V)
0
C4
4.7n
C5 220p
R5 27k
0
R256k
R318k
R422k
0
0
C3
4.7nD4BAV70
C1 0.22u
D8
BAV99
0
OLP2
0
OLR
FB
8
Key Features
• Reduce external components
Wide Input Voltage Range : 4.5 ~ 24V
Integrated OLP circuit
• Various Protection
OLP, OLR, SCP, TSD, Soft-start, Arc Protection
• Design flexibility
Selectable Dimming Polarity
N-N Half-bridge & Push-pull topology
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 4.5 ~ 24V
9
Various Protection
CMP
Error Amp.
FBGND
-
+
-
+0.45*Va Input
Control
Logic
OSC RT
Output
Control
Logic
Drivers
Protection
OLR
1.5s @ Strike
Timer
OUTH
VS
VB
OUTL
VREF
max. 2V
min. 0.5V
-
+
UVLO 4.5VUVLO
Internal
Voltage
ReferenceVINVIN
BDIM
Controller
max. 2V
min. 0.5V
-
+
1.75V0.25V
VSS_STK
VSS_STK
-+
3V
SCP
BDIM
3V -
+
2V-
+
ADIM
BCT/FT
FAULTFAULT
Va
ENA
1.25V
-
+
VREFDRV 6V
OLP4
OLP3
OLP2
OLP1
1.5V
-
+
1.5V
-
+
1.5V
-
+
1.5V
-
+
2V +
TSD 150oC
VSS_STK
VBURST
Disable @ Striking
Fstrike: Fnormal = 1.3:1
2V
-
+
16 switching
cycles @ Normal
VREF
1.5s @ Strike
10ms @ Normal
1) ADIM>3.5V(hys. 0.5V) : Negative
2) ADIM<3.5V : Positive
200k
Protection
ItemDescription
Protection
Condition
SCPShort Circuit
Protection> 2V (@ SCP)
OLROpen Lamp
Regulation> 1.75V (@ OLR)
Arc Arc Protection > 3V (@ OLR)
OLPOpen Lamp
Protection< 1.5V (@ OLP)
TSDThermal Shut
Down150oC (@ Tj)OLP
OLR
Arc
UVLOSCP
TSD
10
Key Features
• Reduce external components
Wide Input Voltage Range : 4.5 ~ 24V
Integrated OLP circuit
• Various Protection
OLP, OLR, SCP, TSD, Soft-start, Arc Protection
• Design flexibility
Selectable Dimming Polarity
N-N Half-bridge, Push-pull topology, P-N Half-bridge, P-N Full-bridge
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 4.5 ~ 24V
11
Design Flexibility
Negative dimming polarity
OUTL
Lamp
current
BCT
OUTH
2V
0.5V
0V
6V
6V
BDIM
ADIM3.5V
OUTL
Lamp
current
BCT
OUTH
2V
0.5V
0V
6V
6V
BDIM
Positive dimming polarity
ADIM3.0V
1) Positive burst dimming polarity @ ADIM < 3.0V
2) Negative burst dimming polarity @ ADIM > 3.5V
Selectable Dimming Polarity
0V
2V
0V
3.3V
0V
0V
Lamp
current
ADIM
CMP
DIM
Negative dimming polarity
Lamp
current0V
Positive dimming polarity
ADIM
2V
CMP
0V
3.3V
0V
0V
DIM
1) Positive burst dimming polarity
2) Negative burst dimming polarity
Negative dimming polarity
2V
CCMP
-
Transconductance
Amplifier
+
+
Lamp
current
sense
ADIM
DIM
REF
2V
CCMP
-
Transconductance
Amplifier
+
+
Lamp
current
sense
ADIM
DIM
REF
Positive dimming polarity
12
Design Flexibility
OLP1
R6680
D4BAV70
R7680
0
SN1
GN1
DN1
DN1
GN2
SN2 DN2
DN2
M1
FDS6990A
0
C95p
0
C114.7n
0
0
TX1
C1410n
0
C7 10u
C6
0.1u
C21u
0
C1710n
11
22
CN1CCFL
11
22
CN2CCFL
11
22
CN3CCFL
11
22
CN4CCFL
C1220u
OLR
REF
0
R18100k
0
D1D1N4148
D3BAV70
D5BAV70
OLP1 OLP2
OLP3 OLP4
R141k
R151k
R41k
R51k
0 0
0 0
F1
FUSE
C4 10u
12345678910
CN5
??
R20
10k
R21
10k
C85p
C104.7n
C155p
C184.7n
IC1
FA
N7
31
6
FB
BD
IM
AD
IM
OL
P2
CM
P
GN
D
OL
P1
BC
T
OL
R
RT
OL
P4
OL
P3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
R2100k
R3100k
0
0
R9100k
R8100k
R13100k
C131u
C1233n
0
0
C194.7n
C31u
0
0
R16680
0
TX2
0
C165p
0
OLP3 OLP4
R17680
R22
100k
OLR
14V
R23N.C.
R19
10k
0
LTM190EX
C2310n
ON/OFF
DIM(0~3.3V)
C201n
0
C24
4.7n
0
0
0
0
0
R1275k
R119.1k
R1012k
C510n
R127k
0
0 00
D2BAV70
OLP2
0
N-N Half-bridge Application Push-pull Application
R21
8.2k
C815p
C1010n
C1515p
C1810n
IC1
FA
N7
31
6
FB
BD
IM
AD
IM
OLP
2
CM
P
GN
D
OLP
1
BC
T/F
T
OLR
RT
OLP
4
OLP
3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
R2100k
R3100k
0
0
0
R9100k
R8100k
R1310K
C131u
C1233n
C1910n
C31u
0
0
R16680
0 0
C1615p
OLP3
0
OLP4
R17680
R22
47k
OLR
14V
R23100k
R19
10k
C214.7n
0
DIM(0~3.3V)
LTM190EX
ON/OFF
C2310n
C201n
0
0
0
0 0
0
R1256k
R1118k
R1022k
C510n
R127k
00 0 0
D2BAV70
0
OLP2OLP1
R6680
R7680
D4BAV700
0
0
C915p
C1110n
0
0
C1410n
C21u
0
0
C22330p0
TX1
C1710n
TX2
R2833
R2933
C242.2n
C252.2n
SN
GN
SN
GN DN
DN
DN
DN
M1
HUFA76413DK8
HOT1
COLD2
CN135001WR-02A
HOT1
COLD2
CN235001WR-02A
HOT1
COLD2
CN335001WR-02A
HOT1
COLD2
CN435001WR-02A
C1220u
OLR
0
REF
R18100k
0
D3BAV70
D5BAV70
OLP4
OLP1 OLP2
OLP3
R141k
R151k
R41k
R51k
0 0
0 0
F1
FUSE
12345678910
CN5
12505WR-10
R20
10k
0
R24750R
Q12N2222
Q22N2907
R261k
0
0
R25
0R
OLP1
R6680
R7680
D4BAV70
0
00
C95p
C114.7n
0
0
TX1
C1410n
C7 10u
C21u
0
C1710n
11
22
CN135001WR-02A
11
22
CN235001WR-02A
11
22
CN335001WR-02A
11
22
CN435001WR-02A
C1220u
OLR
REF
0
R18100k
0
D3BAV70
D5BAV70
OLP2
OLP4
OLP1
R141k
OLP3
R151k
R41k
R51k
0 0
0 0
F1
FUSE
C4 10u
12345678910
CN5
12505WR-10
R20
10k
R21
10k
C85p
C104.7n
C155p
IC1
FA
N7
31
3
FB
BD
IM
AD
IM
OLP
2
CM
P
GN
D
OLP
1
BC
T
OLR
RT
OLP
4
OLP
3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
C184.7n
R2100k
R3100k
0
0
R9100k
R8100k
SN
GN
SP
GP
DP
DN
M3
FDD8424H
R13100k C13
1u
C1233n
0
0
C194.7n
C31u
0
0
R16680
0
TX2
0
C165p
OLP3
0
OLP4
R17680
R22
100k
OLR
14V
R23N.C.
R19
10k
0
LTM190EX
ON/OFF
DIM(0~3.3V)
C2310n
C201n
0
C244.7n
0
0
0
0
0
R1275k
R119.1k
R1012k
C510n
R127k
0
00 0
D2BAV70
OLP2
0
0
M22N7002
0
0
R9100k
R8100k
R13100k
12
ZD16.8V
C131u
C1233n
C192.2n
0
C31u
0
0 R16]680
T2
0
OLP3
C163p
0
OLP4
R17680
R22
100k
13.5V
OLR
R23N.C.
0
R19
10k
LTM190EX
ON/OFF
DIM(0~3.3V)
C2310n
0
C201n
C244.7n
0
0
0
0
0
0R1275k
R119.1k
R1012k
C510n
0
R127k
00 0
D2BAV70
OLP2
0
R3010k
R32 2k
R3310k
R3410k
0
0
R24 20k
0
0
D1
BAV99
0
R26
100R
R27
100R
D6
BAV99
R28
100R
R29
100R
SN
GN
SP
GP DP
DP
DN
DN
M2
FDS8958A
C24
0.1u
12
ZD26.8V R31
10k
SN
GN
SP
GP DP
DP
DN
DN
M1
FDS8958A
C22
0.1u
C6220u
OLP1
R6680
R7680
D4BAV70
0
0
0
C93p
C112.2n
0
0
T1
C1410n
C4 10u
0
C21u
C1710n
11
22
CN135001WR-02A
11
22
CN235001WR-02A
11
22
CN435001WR-02A
11
22
CN335001WR-02A
C1220u
OLR
REF
0
R18100k
0
D3BAV70
D5BAV70
OLP1 OLP2
OLP3 OLP4
R1410k
R1510k
R410k
R510k
0
C251u
0
0 0
F1
FUSE
C7 10u
12345678910
CN5
12505WR-10
R20
10k
R21 20k
C83p
C102.2n
C153p
IC1
FA
N7
31
3
FB
BD
IM
AD
IM
OLP
2
CM
P
GN
D
OLP
1
BC
T
OLR
RT
OLP
4
OLP
3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
C182.2n
R2100k
R3100k
0
P-N Half-bridge Application P-N Full-bridge Application
13
Design Flexibility
Analog & Burst Dimming
CMP
Error Amp.
FBGND
-
+
-
+0.45*Va Input
Control
Logic
OSC RT
Output
Control
Logic
Drivers
Protection
OLR
1.5s @ Strike
Timer
OUTH
VS
VB
OUTL
VREF
max. 2V
min. 0.5V
-
+
UVLO 4.5VUVLO
Internal
Voltage
ReferenceVINVIN
BDIM
Controller
max. 2V
min. 0.5V
-
+
1.75V0.25V
VSS_STK
VSS_STK
-+
3V
SCP
BDIM
3V -
+
2V-
+
ADIM
BCT/FT
FAULTFAULT
Va
ENA
1.25V
-
+
VREFDRV 6V
OLP4
OLP3
OLP2
OLP1
1.5V
-
+
1.5V
-
+
1.5V
-
+
1.5V
-
+
2V +
TSD 150oC
VSS_STK
VBURST
Disable @ Striking
Fstrike: Fnormal = 1.3:1
2V
-
+
16 switching
cycles @ Normal
VREF
1.5s @ Strike
10ms @ Normal
1) ADIM>3.5V(hys. 0.5V) : Negative
2) ADIM<3.5V : Positive
200k
Analog Dimming
Burst Dimming
Negative dimming polarity
OUTL
Lamp
current
BCT
OUTH
2V
0.5V
0V
6V
6V
BDIM
ADIM3.5V
0V
2V
0V
3.3V
0V
0V
Lamp
current
ADIM
CMP
DIM
Negative dimming polarity
14
Design Flexibility
This method can be applied to FAN7313, FAN7316 application
BCT
Burst signal
to Error Amp.
External
pulse signal
BDIM
2V
0.5V
BCT
+
-
Ich
Q
QSET
CLR
S
R
+
-
Idch
18uA
BDIM +
-
9uA
Burst signal
to Error Amp.External
Pulse Signal
Comparator
PWM dimming by external pulse signal
15
Design Flexibility
Wide Input Voltage Range : 4.5 ~ 24/25.5V
OLP1
R6680
D4BAV70
R7680
0
SN1
GN1
DN1
DN1
GN2
SN2 DN2
DN2
M1
FDS6990A
0
C95p
0
C114.7n
0
0
TX1
C1410n
0
C7 10u
C6
0.1u
C21u
0
C1710n
11
22
CN1CCFL
11
22
CN2CCFL
11
22
CN3CCFL
11
22
CN4CCFL
C1220u
OLR
REF
0
R18100k
0
D1D1N4148
D3BAV70
D5BAV70
OLP1 OLP2
OLP3 OLP4
R141k
R151k
R41k
R51k
0 0
0 0
F1
FUSE
C4 10u
12345678910
CN5
??
R20
10k
R21
10k
C85p
C104.7n
C155p
C184.7n
IC1
FA
N7
31
6
FB
BD
IM
AD
IM
OL
P2
CM
P
GN
D
OL
P1
BC
T
OL
R
RT
OL
P4
OL
P3
OU
TH
SC
P
EN
A
OU
TL
VR
EF
VS
VB
VIN
R2100k
R3100k
0
0
R9100k
R8100k
R13100k
C131u
C1233n
0
0
C194.7n
C31u
0
0
R16680
0
TX2
0
C165p
0
OLP3 OLP4
R17680
R22
100k
OLR
14V
R23N.C.
R19
10k
0
LTM190EX
C2310n
ON/OFF
DIM(0~3.3V)
C201n
0
C24
4.7n
0
0
0
0
0
R1275k
R119.1k
R1012k
C510n
R127k
0
0 00
D2BAV70
OLP2
0
Can delete this
external IC - Vcc
regulation circuit
IC_Vcc
16
FAN7317 Key Features
• Reduce external components
Wide Input Voltage Range : 6.0 ~ 24V
Integrated OLP circuit
Integrated OLR circuit
Integrated P-MOS driving circuit
• Various Protection
OLP, OLR, SLP, CMP-high, FB-high,
TSD, Soft-start, Arc Protection
17
FAN7317 Key Features
• Reduce external components
Wide Input Voltage Range : 6.0 ~ 24V
Integrated OLP circuit
Integrated OLR circuit
Integrated P-MOS driving circuit
• Various Protection
OLP, OLR, SLP, CMP-high, FB-high, TSD, Soft-start, Arc Protection
• Design flexibility
Selectable Dimming Polarity
N-N Half-bridge & Push-pull topology
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 4.5 ~ 24V
18
Reduce External Components
• Wide Input Voltage Range : 6.0 ~ 24V
Can use common Vcc with IC input voltage
1 TR, 1 Zenor D, 2 Resister
• Integrated OLP Circuit
No need open lamp detection circuit
Reduce Feedback rectifier diode
1 TR, 5 Diode (3 BAV55,2 BAV70)
5 Capacitor, 1 Resister (@ 4Lamp)
• Integrated OLR Circuit
No need open lamp regulation circuit
No need feedback diode
2 Capacitor, 4 Diode (BAV70)
3 Resister (@ 4Lamp)
• P-MOS Driving Circuit
2 Zenor D, 2 Capacitor, 2 Resistor
IC_Vcc
IC_OLP
REF OLP circuit
P-MOSFET Gate
IC _ Output
for P-driving
Vcc
19
REFC510n
0
R16470
BDIM(0~3.3V)
C15 10uR1110k
0
TX1
R1210k
TX2
OLP2
0
OLP10
OLR3
R41.4M
IC1
FAN7317
OLP
1
OLR
1
OLP
2
BD
IM
BC
T
OLP
3
RE
F(5
V)
EN
A
CM
P
CT
OLP
4
OLR
2O
LR
3
GN
D
OLR
4
VIN
OU
TD
OU
TC
OU
TA
OU
TB
OLR2OLP2
OLP4
0
OLR2
OLP3
C74.7n
OLR1
R256k
0
0
C13 10u
C81u0
OLR3
0
12345678910
CN2
12505WR-10
C9220p
C175p
R818k
C21u
C203.3n
0
OLP1
0
HOT1
COLD2
CN4CCFL
R722k
HOT1
COLD2
CN1CCFL
HOT1
COLD2
CN5CCFL
OLR4
R310k
0
0
C125p
R5100k
R1
10k
HOT1
COLD2
CN3CCFL
0
0
C63.3n
0 0
C143.3n
0
OLR1
R1410k
0
0
C1033n
0
C1110n
OLR4
SN
GN
SP
GP DP
DP
DN
DN
M1
FDS8958A
C195p
C45p
0
C1220u
SN
GN
SP
GP DP
DP
DN
DN
M2
FDS8958A
0
ON/OFF
R910k
0
0
C31u
R6470
C161u
R1510k
13V
0
0
R10470
C183.3n
F1
FUSE
R13470
OLP4
OLP3
Reduce External Components
Can delete this
external IC - Vcc
regulation circuit
IC_Vcc
Can delete this external
OLP detection circuit
IC_OLP
REF OLP circuit
Can delete this
OLR circuitCan delete this external
P-MOSFET driving circuit
P-MOSFET Gate
IC _ Output
for P-driving
Vcc
20
Key Features
• Reduce external components
Wide Input Voltage Range : 4.5 ~ 24V
Integrated OLP circuit
• System Reliability with Various Protection
OLP, OLR, SLP, CMP-high, FB-high, TSD, Soft-start, Arc Protection
• Design flexibility
Selectable Dimming Polarity
N-N Half-bridge & Push-pull topology
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 4.5 ~ 24V
21
Various Protection
Protection
ItemDescription
Protection
Condition
SLPShort Lamp
Protection< 0.3V (@ OLR)
OLROpen Lamp
Regulation> 2.0V (@ OLR)
Arc Arc Protection > 3V (@ OLR)
CMP-HighComparator high
protection> 3V (@ CMP)
FB-HighFeedback high
protection> 3.5V (@OLP)
OLPOpen Lamp
Protection< 1/0.5V (@ OLP)
TSDThermal Shut
Down150oC (@ Tj)
OLP
OLR / SLP
Arc
FB-high
Protection
CMP-high
Protection
TSD
UVLO
22
Key Features
• Reduce external components
Wide Input Voltage Range : 4.5 ~ 24V
Integrated OLP circuit
• Various Protection
OLP, OLR, SLP, CMP-high, FB-high, TSD, Soft-start, Arc Protection
• Design flexibility
P-N Half-bridge, P-N Full-bridge
PWM dimming by external pulse signal
Wide input voltage range : 6.0 ~ 24V
23
Design Flexibility
This method can be applied to FAN7313, FAN7316 application
BCT
Burst signal
to Error Amp.
External
pulse signal
BDIM
2V
0.5V
BCT
+
-
Ich
Q
QSET
CLR
S
R
+
-
Idch
18uA
BDIM +
-
9uA
Burst signal
to Error Amp.External
Pulse Signal
Comparator
PWM dimming by external pulse signal
24
REFC510n
0
R16470
BDIM(0~3.3V)
C15 10uR1110k
0
TX1
R1210k
TX2
OLP2
0
OLP10
OLR3
R41.4M
IC1
FAN7317
OLP
1
OLR
1
OLP
2
BD
IM
BC
T
OLP
3
RE
F(5
V)
EN
A
CM
P
CT
OLP
4
OLR
2O
LR
3
GN
D
OLR
4
VIN
OU
TD
OU
TC
OU
TA
OU
TB
OLR2OLP2
OLP4
0
OLR2
OLP3
C74.7n
OLR1
R256k
0
0
C13 10u
C81u0
OLR3
0
12345678910
CN2
12505WR-10
C9220p
C175p
R818k
C21u
C203.3n
0
OLP1
0
HOT1
COLD2
CN4CCFL
R722k
HOT1
COLD2
CN1CCFL
HOT1
COLD2
CN5CCFL
OLR4
R310k
0
0
C125p
R5100k
R1
10k
HOT1
COLD2
CN3CCFL
0
0
C63.3n
0 0
C143.3n
0
OLR1
R1410k
0
0
C1033n
0
C1110n
OLR4
SN
GN
SP
GP DP
DP
DN
DN
M1
FDS8958A
C195p
C45p
0
C1220u
SN
GN
SP
GP DP
DP
DN
DN
M2
FDS8958A
0
ON/OFF
R910k
0
0
C31u
R6470
C161u
R1510k
13V
0
0
R10470
C183.3n
F1
FUSE
R13470
OLP4
OLP3
Design Flexibility
Can delete this
external IC - Vcc
regulation circuit
IC_Vcc
Wide input voltage range 6 ~ 24V
25
New Product Introduction
- FAN7318 P-N Half Bridge Solution
26
FAN7318 Key Features
• Reduce external components
Wide Input Voltage Range : 6.0 ~ 30.0 V
Integrated OLP circuit
Internal OLR circuit
Internal feedback circuit
Internal P-MOS driving circuit
• Various Protection
OLP, OLR, SLP, OVP, COMP-Hi, Feedback-Hi, TSD, Soft-start
• Design flexibility
Adjustable Striking & Protection delay time
DCR mode operation
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 6.0 ~ 30V
27
Reduce External Components
• Wide Input Voltage Range : 6.0 ~ 30V
Can use common Vcc with IC input voltage
1 TR, 1 Zenor D, 2 Resister
• Integrated OLP Circuit
No need open lamp detection circuit
1 TR, 3 Diode (BAW56)
5 Capacitor, 5 Resister (@ 4Lamp)
• Integrated OLR Circuit
No need open lamp regulation circuit
2 Capacitor, 2 Diode (BAV70)
4 Resister (@ 4Lamp)
• Integrated Feedback rectifier diode
4 Diode (BAV99) (@4Lamp)
• P-MOS Driving Circuit
1 Zenor D, 1 Capacitor, 1 Resistor
Vcc
IC-Vdd
IC_OLP
OLP 1
OLP 2
OLP 3 OLP 4
IC_OLR
OLR 2OLR 1
OLR 3 OLR 4
IC_FB
FB 1 FB 2
FB 3 FB 4
Vcc
P-MOSFET
GateIC_ P Out
Device Unit Price
TR 2 $0.014
ZD 1 $0.007
BAV D 9 $0.063
Capacitor 6 $0.012
Resistor 12 $0.005
Total 30 $0.101
28
FAN7318HOT
COLD
HOT
COLD
HOT
COLD
HOT
COLD
SN
GN
SP
GP
DN
DN
DP
DP
1T
IME
R
CM
P
AD
IM
CT
OL
R2
OL
P1
OL
R1
OL
P2
2 3 4 5 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
RE
F
BC
T
BD
IM
EN
A
GN
D
OU
TB
OL
P3
OL
P3
OL
P4
OL
R4
VIN
OU
TA1
2
3
4
5
6
7
8
9
10
OLR1
OLR2
OLR3
OLR4
OLP1
OLP2
OLP3
OLP4ON/OFF
BD
IM
CN1
CN2
CN3
CN4
CN5
M1
T1F1
C1 C2
R1
C8
R9
R8
R10C15R14
C5 C17
C12
C3
C7
C9
IC1
C4
C6
C13
C14
C16
C20
C21
C19
R2
R6
R12
R15 R16
R13
R7
R3
R17C22
R11ADIM
C11 C10
OLP2OLP1 OLP3 OLP4OLR1 OLR2 OLR3 OLR4
R5
REF
C18
Reduce External Components
Vcc
IC-Vdd
IC_OLP
OLP 1
OLP 2
OLP 3 OLP 4
IC_OLR
OLR 2OLR 1
OLR 3 OLR 4
IC_FB
FB 1 FB 2
FB 3 FB 4
Vcc
P-MOSFET
GateIC_ P Out
29
Reduce External Components
FAN7314 – P-N Half-Bridge
FAN7318 – P-N Half-Bridge
0
OLP1
R171k
D3BAV70
R161k
0
0
C1115p
0 C3012n
0 0
C2 1u
TX1
0
0
C2110n
R6 82k
C8 10u
C251u
0
0
0
0
D9
BAV99
C2810n
D7
BAV99
D6
BAV99
0
0
R99.1k
0
HOT1
COLD2
CN1CCFL
HOT1
COLD2
CN2CCFL
HOT1
COLD2
CN4CCFL
HOT1
COLD2
CN3CCFL
C22220u
25V or 35V
OLR
C26 1n
0
J1
0
RT
OLP
D10BAW56
REF
R14100k
OUTB
D1BAW56
RT
FB
R1330k
LTM190EX
SN
GN
SP
GP DP
DP
DN
DN
M2
FDS8958A
C6
1u
0
OLP2OLP1
OLP3 OLP4
R121k
R111k
R261k
REF
R131k
0 0
0 0
R15
10k
C91u
0
F1
FUSE
C7 10u
12345678910
CN5
12505WR-10
R24
10k
R27
10k
R25
10k
OUTA
C1015p
C1412n
C1215p
C2912n
IC1 FAN7314
S_S
GND
REF
OLR
ENA
BDIM
OLP
VIN
OUTA
PGND
OUTB
RT1
CT
OUTC
ADIM
EA_IN
EA_OUT
OUTD
RT
BCT
R2210k
R2310k
C192.2n
C202.2n
00
0
0
R2110k
R2010k
C182.2n
C172.2n
0
0
R7 0
R8
100k
Q1KST2222
0
C1512n
C271u
0
0
R181k
0
SN
GN
SP
GP DP
DP
DN
DN
M1
FDS8958A
0
TX2
FB
0
C1315p
0
OLP3 OLP4
D11BAW56
0
R191k
0
OLR
ON/OFF
14V
DIM(0~3.3V)
0
C4
4.7n
C5 220p
R5 27k
0
R256k
R318k
R422k
0
0
C3
4.7nD4BAV70
C1 0.22u
D8
BAV99
0
OLP2
0
OLR
FB
HOT
COLD
HOT
COLD
HOT
COLD
HOT
COLD
SN
GN
SP
GP
DN
DN
DP
DP
1T
IME
R
CM
P
AD
IM
CT
OL
R2
OL
P1
OL
R1
OL
P2
2 3 4 5 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
RE
F
BC
T
BD
IM
EN
A
GN
D
OU
TB
OL
P3
OL
P3
OL
P4
OL
R4
VIN
OU
TA1
2
3
4
5
6
7
8
9
10
OLR1
OLR2
OLR3
OLR4
OLP1
OLP2
OLP3
OLP4ON/OFF
BD
IM
CN1
CN2
CN3
CN4
CN5
M1
T1F1
C1 C2
R1
C8
R9
R8
R10C15R14
C5 C17
C12
C3
C7
C9
IC1
C4
C6
C13
C14
C16
C20
C21
C19
R2
R6
R12
R15 R16
R13
R7
R3
R17C22
R11ADIM
C11 C10
OLP2OLP1 OLP3 OLP4OLR1 OLR2 OLR3 OLR4
R5
REF
C18
30
FAN7318 Key Features
• Reduce external components
Wide Input Voltage Range : 6.0 ~ 30.0 V
Integrated OLP circuit
Internal OLR circuit
Internal feedback circuit
Internal P-MOS driving circuit
• Various Protection
OLP, OLR, SLP, OVP, COMP-Hi, Feedback-Hi, TSD, Soft-start
• Design flexibility
Adjustable Striking & Protection delay time
DCR mode operation
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 6.0 ~ 30V
31
FAN7318 Application Circuit
Vcc = 15V, P-N Half Bridge
Lamp Current = 7.0mA
Fm : 46.5KHz
Fstr : 65KHz
Fbus: 320Hz
Vstr : Over 1700V
Panel : M220EW01 (AUO 22”)
32
ADIM
Protection
UVLO 5.5V
Voltage Reference
& Internal BiasREF
VIN
CT
CMP
Control
Logic
BCT
BDIM
-
+
3.5V
High_FB
OUTB
OUTA
GND
High_FB
OLP1
OLP2
-
+
OLR3
OLR4
OLR1
OLR2
OLP3
OLP4
Output Driver
Oscillator
Full Wave
Recifier
TSD 150oC
-
+
-
+
-
+
3.5VHigh_CMP
-
+
OLP
Full or Half
Wave
Rectifier
0.7V/0.5V
-
+
1.35V
ENA
-
+
-
+2VOpen Lamp Regulation
TIMER
-
+
@ striking/normal
3V/1V
Min.
Max.
High_CMP
OLP
Various Protection
Protection DescriptionProtection
Condition
Delay
Time
@ 1uF
SLPShort Lamp
Protection
U 0.3V @
OLR (min.)20mS
OLROpen Lamp
RegulationU 2V (@ OLR)
OVPOver Voltage
Protection
O 1.4V (@
OLR)20mS
OLPOpen Lamp
Protection
U 0.7/0.5V (@
OLP)1.5/0.5S
CHP
Comparator
High
Protection
O 3.5V (@
CMP)1.5/0.5S
FHP
Feedback
High
protection
O 3.5V (@
OLP)
80uS
@50KHz
TSDThermal
Shut Down
O 150oC (@
Tj)
OLP
OLR / FB
SLP
OVP
FB-Hi
COMP-Hi
TSD
O : Over / U : Under
33
Soft Start
Soft start operated by BCT waveform
Normal Mode Burst Dimming Mode
BCT
CMP
Frequency
I Lamp
34
Open Lamp Protection
Open Lamp Protection delay time is adjusted by C timer (@1uF)
Open Lamp Protection disable for DCR Mode by ENA voltage
Normal Operation (ENA < 2.1V) OLP Disable (ENA > 2.5V)
OLP2
OLP1
OLP3
OLP4
Timer
OLP1
OLP3
OLP4
Lamp 1 Open
Lamp 1 Open
OLP delay time ≈ 500mS
Protection Condition
OLP <0.7/0.5V
35
Short Lamp Protection
Short Lamp Protection delay time is adjusted by C timer (@ 1uF)
Short Lamp Protection disable for DCR Mode by ENA voltage
Normal Mode (ENA < 2.1V) SLP Disable ENA > 2.5V
Timer
OLR
Lamp Current
Protection Condition
OLR <0.3VSLP delay time ≈ 20mS
36
Open Lamp Regulation & OVP
OLR Voltage regulated at 2V
Over Voltage Protection delay time is adjusted by C timer (@1uF)
Error Amp Source Current Change
to protect overshoot
22uA OLR<1.4V
3.2uA OLR>1.4V
0uA OLR>2.0V
≈1.4V
@ Striking Mode
CMP
OLR
CMP Slope Change
@ Normal Mode
OLR
Timer
CMP
OLR
@ Striking Mode
Timer
≈1.4V
≈20mS
≈2.0V
Disabled
37
CMP (Error Amp. Output) High Protection
CMP High Protection operated over 3V
CMP High Protection delay time is adjusted by C timer (@1uF)
CMP source current decreases from 22uA to 3.2uA for CMP high protection disable
Timer
Primary
Current
CMP Hi P delay time ≈ 500mS
CMP-Hi Protection Disable Method
1.0MΩ1 TIMER
CMP
ADIM
CT OLR2
OLP1
OLR1
OLP2
2
3
4
20
19
18
17
Normal Mode CMP-Hi P Disable
VIN
2.5VCMP
38
Feedback High Protection
Feedback High Protection operated over OLP 3.5V
Feedback High Protection delay time is decided by 8 cycle 3.5V OLP Voltage
CMP
BCT
8 Cycle ≈ 80uS @ 50Khz main frequency
(Disable @ Striking Mode)Normal Mode
3.5V
OLP
39
Key Features
• Reduce external components
Wide Input Voltage Range : 6.0 ~ 30.0 V
Integrated OLP circuit
Internal OLR circuit
Internal feedback circuit
Internal P-MOS driving circuit
• Various Protection
OLP, OLR, SLP, OVP, COMP-Hi, Feedback-Hi, TSD, Soft-start
• Design flexibility
Adjustable Striking & Protection delay time
DCR mode operation
Analog & Burst dimming
PWM dimming by external pulse signal
Wide input voltage range : 6.0 ~ 30V
40
Adjustable Protection Delay & Striking Time
TIMER
-
+
On @ OVP, SLP
@ striking/normal
1μF
2μA50μA
3V/1V
On @ High_CMP, OLP
Clear all protection condition
Protection
OLP1
OLP2
OLP3
OLP4
150μs
Delay
Striking off
OLP
Striking/normal
OLP min.
0.7V/0.5V
-
+
4 Output
Pulses
CounterMin. & Max.
Detector
/Full Wave
Rectifier
dt = Cdv/I
OVP, SLP dt = 1u / 50u = 20mS
OLP, High_CMP dt = 1u / 2u = 0.5S (Normal)
dt = 1u X 3 / 2u = 1.5S (Striking)
OLP dt = 1u X 3 / 2u = 1.5S (Striking)
T strike off = t OLP + 4 OLP out
= 1.5 + 40u (@ fmain = 50KHz)
≈ 1.5S
dt = Cdv/I
Protection Delay Time Striking Time
41
DCR Mode Operation
DCR Mode Operated by ENA voltage (> 2.5V)
Minimum lamp current = 0mA (Open lamp protection disabled)
Open lamp protection operated by Over Voltage Protection (OLRv>1.4V, Tdelay = 20mS @ 1uF Ctimer)
@ Normal Mode
OLR
Lamp Open
Timer
≈1.4V
≈20mS
≈2.0V
Disabled
Over Voltage Protection @ OLP condition
Timer
CMP
OLR
@ Striking Mode
/5mS
/500mS
DCR Mode Operation OLP Disable @ OLP condition
OLP2
OLP1
OLP3
OLP4
Timer
OLP1
OLP3
OLP4
Lamp1 Open No Protection
CT
BDIM
CMP
ILamp
/1S
0%
0mA
100%
I Max
(Test condition : OVP disable)
42
Analog & Burst Dimming
Analog Dimming Burst Dimming
ADIMNegative
Analog
Dimming
ADIM
Vref
1.34V1.16V
0.67V
0.5V
1.16V=1.34V*0.87
1.86V
0.67V=1.34V*0.50
Error Amp.
Linear region
0~4V
-
+
OLP max.Polarity : Negative
ADIM=0V
ILamp
= 12mA
ADIM=1V
ILamp
= 9mA
ADIM=1.5V
ILamp
= 6mA
ADIM=2V
ILamp
= 5mA
ADIM=2.2V
ILamp
= 5mA
ADIM=2.5V
ILamp
= 5mA
Polarity : Negative
CMP
Ilamp
=1.67mA
BCT
BDIM
=1.8V
CMP
Ilamp
=3.01mA
BCT
BDIM
=1.7V
CMP
Ilamp
=3.88mA
BCT
BDIM
=1.6V
CMP
Ilamp
=4.54mA
BCT
BDIM
=1.5V
CMP
Ilamp
=5.67mA
BCT
BDIM
=1.0V
CMP
Ilamp
=5.99mA
BCT
BDIM
=0.95V
Duty : 20% Duty : 30%
Duty : 40% Duty : 50%
Duty : 70% Duty : 75%
43
Burst Dimming by external Pulse signal
BCT
BDIM
-
+
disable @ striking
External Pulse Signal
Ref.
BCT
Burst signal
to Error Amp.
External
pulse signal
BDIMBCT
BDIM
-
+
disable @ strikingExternal Pulse Signal
Burst Dimming implemented by external Pulse signal
Polarity : Negative
BCT
BDIM
I Lamp
BDIM
BCT
I Lamp
BDIM
Burst signal
to Error Amp.
External
pulse signal
BCT
Polarity : Positive
4444
Product Roadmap - Backlight
FAN7317P-N FB
FAN7316N-N HB
2007 2008 2009
FAN7344RGB 3Ch.
FAN7318P-N HB
FAN7320N-N HB
MOS Integrated (4Lamp)
2010 2011
FAN732XN-N HB
FAN7318AP-N HB
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Super IP Solution
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FAN7342XWLED
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CC
FL
LE
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FAN7313P.P.
• Channel Optimization
• High efficiency
Protection Integrated
MOS Integrated
Low Cost (2 Lamp)
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FAN733XP.P.
Customer optimized