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7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
1/53
AC-DC LCD TV Power Architecture
andLED Backlight
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
2/53
LCD TV Power Architecture and LED Backlight LCD-TV Market
Power Reduction Trend Edge LED LCD TV Backlight
26 to 42 H-V LIPS Reference Design
46/47 Power Reference (PSU) for any Backlight solution Interleaved Frequency Clamp CrM PFC with NCP1631 Quasi Resonance Valley lock out Flyback Converter with NCP1379 ECO Standby SMPS Solution with NCP1053A
46/47 Backlight solution
LIPS Inverter Edge LED Driver
Conclusion
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
3/53
LCD-TV Shipments by Size
Source: Displaysearch 2Q 09
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
4/53
Power Reduction Trend Regulatory reduce power
consumption in active andstandby mode
New technologies focusedon improving efficiency
Source: Sharp
Proposed ENERGYSTAR TV regulations(V4.0) will lower average power targets
Power consumption reduction ~ - 50% over 2 years
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Proposed ENERGY STAR rev4.0 Standards
Target Effective Date: May 2010
Very few LCD-TV passproposed new standard,
most are Samsung LED
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
6/53
LCD-TV LED Backlighting
LED TVs is forecast to grow to 20-32% (~64 M#) by 2012
Source: DisplaySearch July 2009
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
7/53
Comparison of LED LCD TV Backlight Options
Thermal limitations High system cost due to number
of LEDs and # of Drivers Picture artifacts
System Noise & EMI Using lots of external components
(Inductor, capacitor, diode)Concerns
Boost or Buck plus Multi-channellinear
High voltage Boost, buck, linear with Vfadjustment
LEDdriver
Direct-type LED BLUEdge-lit LED BLU
Merit
Deep blacks, better contrast Local dimming Scanning for higher frame rate Low power consumption Complex signal processing
High Power Efficiency Good system reliability independent
LEDs performance. Cost down of system Slim LCD TV
Edge LED > 90% ?
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Power Architectures Remain Varied
PFCCRM
Interleave FCCrMCCM
70 - 400+ W
Signal Power Flyback
Resonant HB30 80 W
Backlight Power Flyback / Resonant HB
24V / 150V+ for LEDHV-LIPS for CCFL / EEFL
50 300 W
Traditional 24 V Backlight and HV-LIPS approachThin TV design impacts solutions choices as well
ECO Standby< 5 W
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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32 HV-LIPS Reference Design For 32 (highest volume size) with possible extension to 26/42
Available since March 2009 For CCFL ( >> 95% of backlight) with possible extension to EEFL Single PCB with LCD and Inverter P ower S upply
Very Cost effective solution No extra Standby SMPS Straightforward CrM PFC
Key ON Semiconductor ICs NCP1607 as CrM PFC controller NCP1351 or NCP1219 as Flyback with low power standby mode
LX6503 Microsemi Backlight controller Full Bridge High Voltage Inverter without High Side Driver (discrete circuit) Jin balance solution
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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32 HV-LIPS LCD TV Block Diagram
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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HV-LIPS LCD TV Complete Solution
Green Point Reference design documentation:http://www.ONSemiconductor.com/pub_link/Collateral/TND3
60-D.PDF
12 CCFL175 mm x 330 mm x 25 mm All-in-one board with current balancer
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46/47 Power Reference (PSU)
Higher power LCD-TVs from 40/42 to 52 /55
Project focusing on power stage only ECO standby OFF mode Interleaved frequency clamp CrM PFC
Up to 70 W Flyback Up to 200 W for backlight
Low profile design 1 st phase: < 13 mm 2nd phase: < 8 mm
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV Power Block Diagram
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV Power Solution Unit (PSU)
Low Profile design < 13 mm / 17.5 mm total
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV PFC Solution
Up to 300 W Interleaved Frequency Clamp CrMPFC Better EMI and EMC Lower I rms for output C Better for SLIM design Standard parts (= 32 CrM)
New controller NCP1631
Easy SLIM narrow range version
Interleaved FCCrM PFC for > 200 W & SLIM design
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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PFC Summary
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV QR Flyback Solution Flyback converter
Up to 70 W max Up to 3 output with 4 A Max
Quasi Resonance Flyback Converter Reduced EMI Best safety behaviors
New NCP1379 controller Valley-lockout system
Variable frequency mode for ultra low power mode Over current protection with auto recovery internaltimer
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
19/53
46 LCD TV PWM Fixed F Flyback Solution
PWM Fixed Frequency Flyback converter 50 kHz Fixed frequency Allow natural CCM
New NCP1252 controller Adjustable switching frequency with skip mode Adjustable soft start
Over current protection with internal timer
Alternative solution to previous QR mode Both designs
on the same PCB with the same switching frequency with the same key parts
QR Valley lock-out or PWM Flyback SMPS up to 70 W
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV Flyback Schematic
2_5VREF
D207
MBRF20L80CTGto220
1 2
3
Flyback power toSignal processingand Audio board
R228 1K
Backlightcontrollersupply toBacklight
board
D215
MMSD4148
R23810K
R203 33k
R2210.47R 2W CN403
Gnd_Lug
1
+
C206
470u 16V
P
N
D216
MMSD4148
PC101B
SFH817A
4
3
CN2024324-03S
123
R2121K
L201 10uH1 2
+
C219
470u 16V
P
N R2192K2
+
C216
10u 50V
+
C209470u 16V
P
N
L202 10uH1 2
R209 100
R231 16K2
+
C207
470u 16V
P
N
*
**
*
*
T200750875731
3
7
1
5
612
11
8
109
R2231K
R226 1K
C218100p 1KV
D206MMSD4148
C212
220p C215
100n
D203
MMSD4148 NCP1379IC200
VCC 6
ZCD1
CT 8
FB2
DRV 5
GND4
CS3
BO 7
R255
10M 2W
R2422K2
D205
BAV21
C225
Y 1nF
+
C205
470u 16V
P
N
D211MMSD4148
R22047k
R21410k
R2051K
ZD200
MMSZ15T1
+
C221
470u 16V
P
N
Q201BC858ALT1
3
1
2
D209
MMSD4148R218
3K3
Q207BC858ALT1
3
1
2
+
C224470u 16V
P
N
Q205BC858ALT1
3
1
2
PC101ASFH817A
2
1
CN2014324-11S
123456789
1011
ZD201MMSZ6V8T1
Q202
MJD200DPAK
D221
MMSD4148
D210
MBRF20L80CTG
to220
12
3
+
C232470u 16V
P
N
R241
2K2
R208
2K2
R232 6K19
R215220
+C21747u 25V
R23710K
+
C220
470u 16V
P
N
R207 4R7
R2111K
D219
MMSD4148
D208MMSD4148
D217
MMSD4148
C20010n 500V
C21068p
R2498K2
D201
1N4937do41d
R25133K 2W
R206
470k
R2101K
Q203STP5NK70ZFP
C211
1n
+
C222
470u 16V
P
N
R213
470
R2221K
C213
330p
Q204BC808-25LT1
3
1
2
+
C208
470u 16V
P
N
C230
470nF
IC201
TL431BCLPRA
3
2
1
C214
100nR216220
R25233K 2W
R2332K49
R2271K
R2364K7
R217 27
VS2
VS1CS
CS
PFC_OUT
PFC-OK
VCC4
V1
Regulation
V2
VS2
Regulation
VS2
VS1
VS1
VS1
VS2
V2
Regulation
V1
VS-Stby
VCC3
2_5VREF
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LCD TV QR Flyback Waveforms
QR mode with valley lock-out With valley lock-out for low P With lower frequency by P Max
Top Trace Vin = 400 Vdc Pout = 34 W 1.75 A at 42.7 kHz V max = 572 V
Bottom Trace Vin = 400 Vdc Pout = 70 W 2.62 A at 39 kHz V max = 618 V
Valley lock-out is a Key improvement of QR mode
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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ECO Standby SMPS Solution (1)
Dedicated 5W ECO Power Standby SMPS
P in < 90 mW for P out = 40 mW @ 230 Vac
Integrated High Voltage switcher NCP1053A (400 mA/ 40 kHz Max)
Hysteretic mode improves
Low frequency mode allows DCM
Limited current reduces possible noise issues
Hysteretic, Low Freq & DCM for ECO Standby SMPS
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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ECO Standby SMPS Solution (2)
Standby relay Disconnect all parasitic standby load (~100-150
mW @ 230 Vac)
Directly controlled by TV P
Optional ECO ON / OFF switch Low cost 2A / 10V non-isolated switch
OFF mode: P in < 20 mW by no load @ 230 Vac
ECO switch provides ON/OFF without Mains switch
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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20
30
40
50
60
70
80
0.03 0.04 0.05 0.10 0.25 0.50 1.00 1.50 2.00 4.00 5.00
Output Power (W)
E f f i c i e n c y ( %
)
Efficiency / 230V
Efficiency / 120V
ECO Standby SMPS efficiency
OFF mode / no load: P in < 20 mW @ 230 Vac (15 @ 120 Vac)Standby / 40 mW Out: P in < 90 mW @ 230 Vac (86 @ 120 Vac)
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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ECO Standby SMPS Waveforms Drain Voltage and Current of
NCP1053A Switcher 200 V/div & 200 mA/div
For 5 V & 1 A = 5 W Output
Left: Hysteretic Burst mode (100 s/div)
Right: Detailed cycle
(4 s/div)
Top Trace: 90 Vac
Middle Trace: 230 Vac
Bottom Trace: 264 Vac
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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ECO Standby SMPS Schematic
VS-Stby
VCC2
VCC1
PC100A
C10710nF
SFH817A
2
1
R103 8.2K
R1101K
R1011K
Q103
BC848ALT1
CN1014324-05S
12345
Q100
BC858ALT1 3
1
2
R120 0
Q101 BC808-25LT13
1
2R10410K
+
C104
10u 25 V
R11922K
J100INSTALL
1
2
D100
MBR360
NCP1053P44GIC100
VCC1 GND 8
Control in2
Power Drain 5
NC4
GND3
GND 7
R118470
IC101TLV431ASN1
3
2
1
R115 1K
R1142K2
D104
MMSD4148
1.25VREF
R116 1K
R113 4K7
PC001BSFH817A
4
3
R100100K 1/4W
D102
BAV21
ZD101 MMSZ5V1T1
R11110K
D108 MMSD4148
CN1004324-02S
12
D105
MMSD4148
R10910K
C100220p 400V
L100
10uH1 2
R10230K
R1174.7K
R1074.7K
PC100B
SFH817A
4
3
D110 MMSD4148
ZD102 MMSZ15T1
D106MMSD4148
R10510K
T100750871014
7
83
14
5 6
9
R106470
+ C102
470 16V
P
N
R1121K
R1084.7K
+ C10347 25V
P
N
+
C105
47u 25 V
D101 1N4937
D103MMSD4148
D109 MMSD4148
PC200A
SFH817A
2
1
C106 100 n
PC200B
SFH817A
4
3
D107
MMSD4148Q102
BC848ALT1
C10110p 1KV
STANDBY
VS-Stby
POWER_OK
RELAY1
VS-Stby
V1
RELAY2
VCC3VCC4
Standby_supply
STANDBY
VS1
Regulation
VS-Stby
VS2
ON-OFF Switch "Optional"
POWER_OK
Standby power and signalTo Signal processing board
HV Barrier
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 Flat TV PSU - Backlight Interface
Interconnection on Power to any Backlightsolutions
400 Vdc / 200 W PFC OK 5 V and 12 V Power Good
Separated & Dedicated Backlight solutions High Voltage LIPS for CCFL / EEFL
High DC Output Voltage HB LLC for LED Driver Classical 24 Vdc HB LLC PDP dedicated Power converter
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LIPS Inverter
Higher power LCD-TVs With extension to 40/42 or 52 /55 for both CCFL or EEFL Follow on of 32 LIPS Reference Design Full Bridge fixed frequency ZVS with possible synchronization
High efficiency, low EMI and sinusoidal lamp current
Dedicated LIPS module To be interconnected with 46 Power Ref Design Step 1 < 13 mm Microsemi Backlight control ler LX6503
ON Semiconductor ICs 2 High Side Drivers NCP5111 1 single signal driver transformer
Low profile design < 13 mm on top of PCB
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Power (PFC + Flyback + Standby SMPS)
LIPS - High Voltage Back-light Inverter
CrM InterleavedPFC
NCP1631400 Vdc
OFF in Stand-by
Full Bridg e Inverter
2 x High Side DriverNCP5111
OFF in Stand-by
QR FlybackSMPSNCP1379
OFF in Stand-by
Mains Inpu t90-264 Vac
12 Vdc5 Vdc
St-by / ONBias
LCD TVSignal
processingand
Audio
amplifiers
Back-lightController
LX6503
CCFL
Currentsensing
I Lamp regulationOCP, OVP
PWM 2
PWM 1
13 Vdc Au dio
Currentbalancing
Board
Stand by SMPSNCP1053A
5 Vdc-Stand-by
Open lampsprotection
Relay
Power Good
ON/OFF, Dimming,Synch ro
ON/OFF
46 LIPS Inverter Block Diagram
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 LED Backlight Power
Higher power LCD-TVs With extension to 40/42 or 52 /55 HB LLC dedicated to Backlight power High DC output voltage to power directly LED drivers
Separate / Dedicated LED Power module To be connected with 46 Power Ref Design step 2 < 8 mm
ON Semiconductor ICs New NCP1397 New
New LED driver controller CAT4206
Low profile design < 8 mm on top of PCB (< 12.5 mm total)
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Multiple LED Linear Drivers with CAT4026
Up to 6 channels with linear bipolar transistors Linear: Vf monitoring and supply modulation & control
Dedicated SMPS to support output voltage modulation
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 Linear Edge LED Driver TV Block Diagram
DedicatedSMPS for Backlight
withModulated
output vol tage
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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46 Linear LED Driver Backlight Solution
Ultra SLIM design < 8 mm / 12.5 mm total
Special technologies PCB size: 250 mm x 165 mm
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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HB LLC for Ultra Slim SMPS
Limited number of components
Zero Voltage Switching (ZVS)
Zero Current Switching (ZCS)
Higher power density
High efficiency and EMI friendly for low profile SMPS
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Resonant Inductance Location?
Benefits: flexibility
EMI use resonant coil for OCP
Drawbacks:
cooling insulation
External resonant coil is better for ultra slim design
External inductance Internal leakage inductance
Benefits: insulation cooling One component
Drawbacks: flexibility EMI + stray flux window utilization
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Secondary Rectification
Benefits: voltage drop
Single diodes
Drawbacks: secondary winding matching
window utilization Higher voltage rectifiers
Bridge rectifier is better for HV output applications
Push-pull configuration Bridge rectifier
Benefits: one winding
Lower voltage diodes Matching
Drawbacks: Higher losses
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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NCP1397 - LLC Stage Controller
NCP1397 is cost effective and highly safe solution
Features:- operation from 50 kHz up to 500 kHz- 600 V driver - Startup sequence via an externally adjustable soft-start- Brown-out protection combined with latch input- Disable input for ON/OFF control (skip mode)
Benefits for backlight application: No driver transformer Simple skip mode Simple OCP
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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New OCP Implementation
Res. Coil aux. winding provides accurate and fast OCP
Adjustable delayed fault Short circuit protection with frequency shift
New Double phase current information from auxiliarywinding of resonance coil
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Output Voltage Modulation
CAT4026 sinkscurrent from FB
divider to increaseoutput voltage
Linear LED Drivers impact Dedicated SMPS to support output voltage
modulation Does not allow to get added auxiliary voltages for
Audio & Signal processing
Single Output Voltage modulated for Linear Driver
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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HB LLC Schematic for Linear LED Driver
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Strong load variation (0 to 100%)on HB LLC with 100 Hz dimming
Traces: Top: Output current from 0 to 1
A (0.5 A/div) Middle: Primary current 2 A/div Bottom: Output voltage ripple
2 V/div (120 Vdc)
Top picture: 50% dimming HB LLC works in Burst Up to 3 V peak ripple on V out
Bottom picture: 5% dimming HB LLC works in Burst < 0.5 V peak ripple on V out
HB LLC Waveforms
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Edge-LIT LED Backlighting Trends
LED Light bars vary in configuration Single LED Strings of High Power (~ 200 V+ , 100 mA+) Multiple LED Strings (up to 4) of Lower Power (~ 100 V+ ,
50 mA+)
LED Driver solutions must handle from 4 to 16 channels
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Existing Large Panel Backlight Solution
Advantage: Independent Channel
Efficiency and LED-Fault handlingLoosely regulated input supply
Drawback: Cost and Complexity
Loosely ~100V
For each LED channels!
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Existing LED Driver Backlight Solution
Large-size panel power Module used for 6 Channel Edge-LIT LED TV Each channel has a Dedicated Driver IC + inductive DC/DC boost + switch
6 Ch = 6 x ( DC-DC Boost +
additional switch )
6 Ch = 6 x Driver IC
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Multi-channel Linear Edge-Lit Solution
Cost effective solution to address a wide number of channels
VF Monitoring to dynamically adjusts Anode voltage
Efficiency target range >90%, 94% typ. (varies with LEDmismatch)
Thermal dissipation addressed by external Power BJTs
Address various LED string faults
Linear LED Driver : A cost effective solution for multiple channels
M l i h l Li Ed Li S l i
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Multi-channel Linear Edge-Lit Solution 6 channel configuration shown
Fault diagnostics External powerdevices (low JA)
LED Cathode regulation ~3 VLED-Anode : dynamic adjustment
LED Cathode OVP
M lti h l Li Ed D i S h ti
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Multi-channel Linear Edge Driver Schematic
DPAK or TO220FP Power stage
Current sense
OVP UVP
Connection to the 6 Edge LED segments
O ti i d D i LED A d C t l
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Optimized Dynamic LED-Anode ControlTYPICAL EFFICIENCY
80%
85%
90%
95%
100%
0% 5% 10% 15% 20%
LED STRING MISMATCH [Pk-Pk]
E F F I C I E N C Y
200V100V
'LINEAR' POWER DISSIPATION
0
5
10
15
20
0% 5% 10% 15% 20%LED STRING MISMATCH [Pk-Pk]
D I S S P A T I O
N [ W A T T S ]
6ch: 200V, 100mA (120W)12ch: 100V, 50mA (60W)
V modulation & control to limit overall Power dissipation
Efficiency depends on LED string matching 200V LED strings (with 10% mismatch) delivers ~ 94% efficiency Thermal power dissipation levels : ~ 5 to 10 watt range
LED Channel Current Matching
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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LED Channel Current MatchingVARIATION vs BASE CURRENT
-0.6%
-0.4%
-0.2%
0.0%
0.2%
0.4%
0.6%
0 2 4 6BJT BASE CURRENT [mA]
V A R I A T I O N
VARIATION vs LED CATHODE
-0.6%
-0.4%
-0.2%
0.0%
0.2%
0.4%0.6%
3 6 9 12 15 18 21 24 27 30CATHODE VOLTAGE [V]
V A R I A T I O N %
.
CHANNEL MATCHING %
-1.0%
-0.5%
0.0%
0.5%
1.0%
Ch1 Ch2 Ch3 Ch4 Ch5 Ch5
CHANNEL
M A T C H I N G %
Init ial channel matching tolerance ~ 0.5% Variation with BJT Base current : < 0.25% Variation with Cathode to 30V : < 0.15% Overall Channel matching less than 2%
Very good current matching < +-2%
Optimized Wide PWM Dimming Range
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Optimized Wide PWM Dimming Range
No concept limitationfor very short ONtime
CAT4026 LinearDriver is optimizedfor PWM dimming
Strong powervariation manageddirectly by SMPS
BRIGHTNESS vs PWM DUTY
0%
1%
10%
100%
0% 1% 10% 100%PWM DUTY CYCLE
C U R R E N T %
[ F S B ]
Down < 1% for 400Hz PWM dimming
Edg LED Li B klighti g S
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Edge LED Linear Backlighting Summary
Provides reduced total solution cost
VF monitoring minimizes & optimizes power dissipation
Minimizes EMI
Offers competit ive Channel to Channel LED matching
Offers competitive wide range PWM dimming with good linearity
Supports Fault diagnostics against Open-LED and Short-LED
modes
The Linear is a easy to design and cost effective solution
Conclusion
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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Conclusion
Complete roadmap of LCD TV solutions 32 LIPS
A cost optimized solution for CCFL from 26 up to 42 46 Power
Power for any type of Backlight from 40 up to 55 < 13 or 8mm
46 LIPS < 13 mm with separate LIPS
46 Edge LED SLIM < 8 mm with separate LED Drivers with very efficient
Linear Edge LED driver solution
Approach Synergy by re-use solutions, speeding up the design process
F M I f ti
7/26/2019 AC-DC LCD TV Poower Architecture and LED Backlight.pdf
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For More Information
View the extensive portfolio of power management products from ON
Semiconductor at www.onsemi.com
View reference designs, design notes, and other material supportingthe design of highly efficient power supplies at
www.onsemi.com/powersupplies
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