1 On-Bright confidential LED BLU Driving and Challenge Q4, 2010 Allen Zhang.
-
Upload
blanche-blake -
Category
Documents
-
view
214 -
download
0
Transcript of 1 On-Bright confidential LED BLU Driving and Challenge Q4, 2010 Allen Zhang.
1On-Bright confidentialOn-Bright confidential
LED BLULED BLU
Driving and ChallengeDriving and ChallengeQ4 2010Q4 2010
Allen ZhangAllen Zhang
2On-Bright confidentialOn-Bright confidential
Outline Outline
1 LED to CCFL Replacement
LED backlight benefits analysis
CCFLLED market share trend
2 Small amp Middle Size Driving Topology
LED notebookNetbook
LED monitor
Low-end display
3 LED TV Driving Topology
4 OB LED Driver Roadmap
5 QampA
3On-Bright confidentialOn-Bright confidential
TV Products Innovations TV Products Innovations
Internet Internet ConnectivityConnectivity
3D3DDisplayDisplay
HumanHumanInterfaceInterface
LEDLEDBacklightBacklight
TV Products InnovationsTV Products Innovations
LED backlight is very hot
4On-Bright confidentialOn-Bright confidential
LED Type LED Type W
hite
Lig
ht
Current Capability Standard LED - drive current lt50mA
High current LED - drive current 50-150mA
High power LED - drive current 150-1000mA+
Color White LEDs
Red Green and Blue LEDs (Combined white)
Forward voltage depends on color Red ~2V Green ~35V BlueWhite ~35-4V
5On-Bright confidentialOn-Bright confidential
Benefits of LED Backlight Benefits of LED Backlight
Power saving (30~40 saving for 12~14rdquo NB)
Longer life time (+50000 hrs vs ~20000hrs of CCFL)
0~100 wide dimming range (up to 20KHz PWM dimming audio noise free)
Low voltage driver reduces complexity power design
Environmental friendly (CCFL contains Hg)
Local dimming for power saving and higher CR (Large size direct type backlight only)
Wide color gamut (NTSC CCFL ~78 WLED ~80 RGB LED gt110)
Light weight and thin profile
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
2On-Bright confidentialOn-Bright confidential
Outline Outline
1 LED to CCFL Replacement
LED backlight benefits analysis
CCFLLED market share trend
2 Small amp Middle Size Driving Topology
LED notebookNetbook
LED monitor
Low-end display
3 LED TV Driving Topology
4 OB LED Driver Roadmap
5 QampA
3On-Bright confidentialOn-Bright confidential
TV Products Innovations TV Products Innovations
Internet Internet ConnectivityConnectivity
3D3DDisplayDisplay
HumanHumanInterfaceInterface
LEDLEDBacklightBacklight
TV Products InnovationsTV Products Innovations
LED backlight is very hot
4On-Bright confidentialOn-Bright confidential
LED Type LED Type W
hite
Lig
ht
Current Capability Standard LED - drive current lt50mA
High current LED - drive current 50-150mA
High power LED - drive current 150-1000mA+
Color White LEDs
Red Green and Blue LEDs (Combined white)
Forward voltage depends on color Red ~2V Green ~35V BlueWhite ~35-4V
5On-Bright confidentialOn-Bright confidential
Benefits of LED Backlight Benefits of LED Backlight
Power saving (30~40 saving for 12~14rdquo NB)
Longer life time (+50000 hrs vs ~20000hrs of CCFL)
0~100 wide dimming range (up to 20KHz PWM dimming audio noise free)
Low voltage driver reduces complexity power design
Environmental friendly (CCFL contains Hg)
Local dimming for power saving and higher CR (Large size direct type backlight only)
Wide color gamut (NTSC CCFL ~78 WLED ~80 RGB LED gt110)
Light weight and thin profile
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
3On-Bright confidentialOn-Bright confidential
TV Products Innovations TV Products Innovations
Internet Internet ConnectivityConnectivity
3D3DDisplayDisplay
HumanHumanInterfaceInterface
LEDLEDBacklightBacklight
TV Products InnovationsTV Products Innovations
LED backlight is very hot
4On-Bright confidentialOn-Bright confidential
LED Type LED Type W
hite
Lig
ht
Current Capability Standard LED - drive current lt50mA
High current LED - drive current 50-150mA
High power LED - drive current 150-1000mA+
Color White LEDs
Red Green and Blue LEDs (Combined white)
Forward voltage depends on color Red ~2V Green ~35V BlueWhite ~35-4V
5On-Bright confidentialOn-Bright confidential
Benefits of LED Backlight Benefits of LED Backlight
Power saving (30~40 saving for 12~14rdquo NB)
Longer life time (+50000 hrs vs ~20000hrs of CCFL)
0~100 wide dimming range (up to 20KHz PWM dimming audio noise free)
Low voltage driver reduces complexity power design
Environmental friendly (CCFL contains Hg)
Local dimming for power saving and higher CR (Large size direct type backlight only)
Wide color gamut (NTSC CCFL ~78 WLED ~80 RGB LED gt110)
Light weight and thin profile
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
4On-Bright confidentialOn-Bright confidential
LED Type LED Type W
hite
Lig
ht
Current Capability Standard LED - drive current lt50mA
High current LED - drive current 50-150mA
High power LED - drive current 150-1000mA+
Color White LEDs
Red Green and Blue LEDs (Combined white)
Forward voltage depends on color Red ~2V Green ~35V BlueWhite ~35-4V
5On-Bright confidentialOn-Bright confidential
Benefits of LED Backlight Benefits of LED Backlight
Power saving (30~40 saving for 12~14rdquo NB)
Longer life time (+50000 hrs vs ~20000hrs of CCFL)
0~100 wide dimming range (up to 20KHz PWM dimming audio noise free)
Low voltage driver reduces complexity power design
Environmental friendly (CCFL contains Hg)
Local dimming for power saving and higher CR (Large size direct type backlight only)
Wide color gamut (NTSC CCFL ~78 WLED ~80 RGB LED gt110)
Light weight and thin profile
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
5On-Bright confidentialOn-Bright confidential
Benefits of LED Backlight Benefits of LED Backlight
Power saving (30~40 saving for 12~14rdquo NB)
Longer life time (+50000 hrs vs ~20000hrs of CCFL)
0~100 wide dimming range (up to 20KHz PWM dimming audio noise free)
Low voltage driver reduces complexity power design
Environmental friendly (CCFL contains Hg)
Local dimming for power saving and higher CR (Large size direct type backlight only)
Wide color gamut (NTSC CCFL ~78 WLED ~80 RGB LED gt110)
Light weight and thin profile
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
6On-Bright confidentialOn-Bright confidential
Power Saving of LED BLU Power Saving of LED BLU
Low drive voltage to ensure safety operation
The relationship between LED intensity and drive current is liner
Lower current is operated to perform the same brightness level that CCFL module
Power saving of 30~50 of CCFL power consumption
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
7On-Bright confidentialOn-Bright confidential
Local Dimming of TV LED BLU Local Dimming of TV LED BLU
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
8On-Bright confidentialOn-Bright confidential
NTSC coverbull CCFL ~78 bull WLED ~80 bull RGB LED gt110)
Wide Color Gamut Wide Color Gamut
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
9On-Bright confidentialOn-Bright confidential
NB PC
LCD MNT
LCD TV
bull1048707 Power Savingbull1048707 Light weightbull1048707 Thin profilebull Small cost premium
bull1048707 None
bull1048707 Power Savingbull1048707 Dynamic BLU control
bull1048707 Costbull1048707 Reliabilitybull1048707 Huge LED Amountbull Thermal compensation
bull1048707 Power Savingbull Thin profile
bull1048707 Costbull1048707 Inputoutput interface
AdvantageAdvantage ChallengeChallenge
LED BLU Market Potential LED BLU Market Potential
ApplicationApplication
High
Low
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
10On-Bright confidentialOn-Bright confidential
LED BLU Market Share LED BLU Market Share
0 00
20 00
40 00
60 00
80 00
100 00
2008 2009 2010 20112008 2009 2010 2011
Share Rate (NB) 2190 6670 8940 9520
Share Rate (MNT) 030 190 1890 3510
Share Rate (TV) 030 268 2126 4529
Samsung MP LED TV at 2009 Q2Kick off LED TV market
Low cost Edge type become main stream Help to rise the share rate from CCFL
Power saving features Easy to meet EPA50
Will break 50 share ~2012Source Display Search
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
11On-Bright confidentialOn-Bright confidential
LED Driving Topology-NB LED Driving Topology-NB
6 X 10 LED
20mA
15rdquo panel for example15rdquo panel for example6 strings 10 LED per string 20mA6 strings 10 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
OB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K320K620K12MHz frequency160K320K620K12MHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
OB3360GND
END
DIM
VIN
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
12On-Bright confidentialOn-Bright confidential
OB3362GND
END
DIM
VIN
12CH
LED Driving Topology-MNT LED Driving Topology-MNT
2 X 15 LED
100mA
12 X 15 LED
20mA24rdquo panel for example (1)24rdquo panel for example (1)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~50V Pout ~12WVout ~50V Pout ~12W
OB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150~500kHz frequency150~500kHz frequency0~100 wide range dimming0~100 wide range dimming3 channel to channel current matching3 channel to channel current matching
24rdquo panel for example (2)24rdquo panel for example (2)12 strings 15 LED per string 20mA12 strings 15 LED per string 20mAVout ~33V Pout ~4WVout ~33V Pout ~4W
parallel connection to support larger current application
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
13On-Bright confidentialOn-Bright confidential
OB3372GND
VDD
DIM
VIN
LED Driving Topology-Low End Display LED Driving Topology-Low End Display
OB337XOB337X02V reference benefits efficiency02V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protection
OB3372OB3372BoostDIP8 built in 60V MOSFETBoostDIP8 built in 60V MOSFETOB3370NOB3370NBoost SOP8 ControllerBoost SOP8 ControllerOB3370POB3370PBuck SOP8 Controller Buck SOP8 Controller
26rdquo panel for example (2)26rdquo panel for example (2)Single string 400mASingle string 400mAVout ~40V Pout ~16WVout ~40V Pout ~16W
All strings parallel connection
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
14On-Bright confidentialOn-Bright confidential
LED vs CCFL Cost Comparison LED vs CCFL Cost Comparison
66
41
38
22
95
66
54
28
0 50 100 150
55
46
40
32
CCFL LED
Q3 2010
$USD
} premium 28
} premium 41
} premium 61
} premium 43
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
15On-Bright confidentialOn-Bright confidential
LED TV Market Share Growth LED TV Market Share Growth
20 18
30
40
20
4550 50
62
4034
60
0
10
20
30
40
50
60
70
Samsung LG Sony Toshiba Sharp Vizio
2010 2011
Source Display Search
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
16On-Bright confidentialOn-Bright confidential
LED Backlight for Large Size TV Panel LED Backlight for Large Size TV Panel
Direct type with Local dimming
Direct type without Local dimming
Edge type backlight
High Performance Slim Profile
RGB LED White LED White LED
RGB amp Local dimming has power saving and high-CR feature High-end use
Edge type solution has low cost feature Main stream
Direct BacklightBetter emission
Allowing independently dimming block by block
Edge BacklightAllowing slim design
Fewer LED number and lower cost
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
17On-Bright confidentialOn-Bright confidential
LED TV Cost Down Trend LED TV Cost Down Trend
Direct type Edge type Advanced edge type Advanced edge type
2008 2009 2010 2011
structure Direct type Edge type Edge type Edge type
LED 960 576 400 176
40 inch LED TV
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
18On-Bright confidentialOn-Bright confidential
LED TV Driving Topology LED TV Driving Topology
OB3376OB3376Dual channel boost controllerDual channel boost controller150300kHz switching frequency150300kHz switching frequencyMulti chip syncMulti chip syncCost effectiveCost effective
42rdquo panel for example42rdquo panel for example4 strings4 strings150mA per string150mA per stringVout ~150V Pout ~90WVout ~150V Pout ~90W
150mA
OB3376GND
END
DIM
100V
100V
VDD
OB3376GND
END
DIM
100V
100V
VDD
SYNC
SYNC
FB1FB2
FB1FB2
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
19On-Bright confidentialOn-Bright confidential
LED TV Power Optimize LED TV Power Optimize
LLC
PFC
Standby Power
Digital amp Audio
DCDCBooster
LED Balance
LLC
PFC
Flyback
Digital amp Audio
LED Balance
Standby
DCDCReduced
Current S
olution
Optimized Solution
bullReduce DCDC Booster ( Cost )bullEfficiency improvement
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利
20On-Bright confidentialOn-Bright confidential
Headroom voltage Headroom voltage feedback for efficiency feedback for efficiency and thermal improvementand thermal improvement
On-Bright LED TV Total Solution On-Bright LED TV Total Solution
TM PFCOB6563
CCM PFCOB6573
QR FlybackOB2203
LLC ControllerComing Soon
LED DriverOB3368 (Q1 2011)
Flyback ControllerOB2273
Lower Standby
24V2A for audio
5V3A for system
5V1A for standby
AC input
21On-Bright confidentialOn-Bright confidential
作者简介 张昌山先生毕业于西南交通大学电子工程系长期以来一直致力于背光驱动市场的产品规划及技术研究张先生于 2005 年正式加入昂宝电子(上海)有限公司期间一直担任系统部总监全权负责公司电管理芯片之应用团队及管理 张昌山先生在相关领域拥有丰富的实际应用经验在 LED 照明驱动背光驱动均有自己独到的见解张先生在该领域还拥有多项国内外专利