Download - Power LED Portfolio
0 • Template • Nov-09 Confidential ProprietaryON Semiconductor Confidential
Confidential Copy
LED Front lighting solutions
1 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Power LED front lighting
System-on-chip
ON Semi Automotive LED driver overviewLinear
Regulators
Linear &Switched
Mode Regulators
CHMSL
Rear Combination Lamps(Turn Signals, Tail Light, Brake Light)
Side Repeaters
Backlighting
Interior Lighting
Rear Combination Lamps (light guides)
Front lighting (1st generation)
Atmosphere Lighting
Front lighting (High beam, Low beam, DRL, Position light, Turn Indicator, Fog, Static Cornering, Side marker,…)
AFS
O N S o l u t i o n sNUD4001 500mA/30V LED driver
NUD4011 70mA/200V LED driver
NSI45xxx 10mA–160mA / 45V CCR(*)
(*) CCR = Constant Current Regulator
T y p i c a l A p p l i c a t i o n s
A p p l i c a t i o n C h a r a c t e r i s t i c sLow current LED’s
Low total power
85dC ambient
Low system Integration
Power LED’s
Medium to high total power
Up-to 125dC ambient
Low system Integration
Power LED’s
Medium to high total power
Up-to 125dC ambient
System-on-chip
NCV7680 RCL, DRL (Daytime Running Lights) CHMSL (Center High Mounted Stop Lamps)
NCV3065/6 1.5 A Constant Current Switching Regulator for LEDs w/ enable
NCV786XX product line
See further in this presentation
2 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
ON Semi Automotive LED driver overviewLinear
Regulators
CHMSL
Rear Combination Lamps(Turn Signals, Tail Light, Brake Light)
Side Repeaters
Backlighting
NUD4001 500mA/30V LED driver
NUD4011 70mA/200V LED driver
NSI45xxx 10mA–160mA / 45V CCR(*)
(*) CCR = Constant Current Regulator
Low current LED’s
Low total power
85dC ambient
Low system Integration
3 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Lowest cost
High current at high voltage
Lowest efficiency
Requires LED binning
LED Thermal runaway
Price - $0.01
CCRs positioned to winSwitching Regulators
PWM
L
C
Vin
RRset
Linear Regulator IC
Resistors
Vin
R
Vin
R
Rset
Vin
R
Set Point
Vin
Rset
High efficiency
Application specific
sockets
Highest cost
High EMI
Price $0.50 - $2.00
Current regulation ±2% ($0.20)
Multi channel
Self protecting ($0.20)
Low efficiency (Linear)
Medium cost
Price $0.04 - $1.00Wide voltage range
Current regulation ±10%
- Roadmap to ±5%
Protects LEDs
Low cost
Low efficiency (Linear)
Price - $0.03 to $0.20
CCR
4 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
CCR – Value PropositionCCR vs. Resistor
0
5
10
15
20
25
30
35
40
45
50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Run V
LE
D m
A
I-ccr
I-res
Brighter at low voltage
Regulator ΔI/ΔV (mA/V) -0.06
Resistor ΔI/ΔV (mA/V) 3.57
Constant brightness over
Critical Operating Region
CCR
Vin
Ireg
± 15% or
±10% ILED
± 50%
ILED
Protection at High Voltage
Features Benefits
Regulated current • Constant brightness over wide voltage range
• Protects LEDs from over drive at higher input voltage
• Brighter LEDs at lower input voltage
• Reduces or eliminates LED binning inventory
• Lower overall solution cost
45V max operating voltage • Withstands battery load dump
Power packages (SOD123/SOT223/DPAK) • Operates in harsh thermal environment (85oC still air)
Negative temperature coefficient • Protects devices & LED
Simple design/NO EMI generation • Less complexity
5 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Under Hood & Inside Trunk
Lighting
Reading, Map and Task Lighting
CCR in Automotive Lighting
Rear View Lighting
Dome & Door Puddle Lighting
RCL &
Side
Markers
Emergency Vehicle
CHMSL
Console Backlight
Daylight Running Light (DRL)
Blind Spot indicator
System designers facing
space constraints.
Automotive applications
operate in high temperature
environments.
Applications increasing in density -
requires smaller & more thermally
efficient packages
Number Plate
6 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
CCR - Product RoadmapL
ow
Cu
rre
nt
2010
Duals/Triple/Quads CCRs
10-30mA Tighter Tolerance
TSOP6, SO-8
CCR 30 – 160 mA
±5%, +50V
SOT223 / DPAK
7 Devices
PWM Enable CCR
±10%, 45V, 20 & 30 mA
SC-74 MOD LF
2 Devices
PWM Enable CCR
±10%, 45V, 20 & 30 mA
SOT-223/SO8FL
2 Devices
1H11 2H11 1H12 2H12 1H13 2H13
Production
Development
Definition
Exploring
Hig
h C
urr
en
t
Bridge integrated CCR
20-30 mA, 50V
SO8FL, SOT-223
2 DevicesPWM Enable CCR Arrays
10-30 mA, ±5%
CCR 350 mA
±10%, 50V
SMC/DPAK
2 DevicesCCR 160 mA
±10%, 50V
SMB
3 Devices
Auto
Channel, Auto Lighting
AC Lighting
Display
Backlight
CCR 50 mA
±10%, 50V
SMA
3 Devices
CCR with Rext 90-160mA
±15%, 45V, Auto (AEC)
DPAK
CCR with Rext 60-100mA
±15%, 45V, Auto (AEC)
DPAK
CCR with Rext 20-40mA
±15%, 45V, Auto (AEC)
SOT-223
CCR with Rext 35-70mA
±15%, 45V, Auto (AEC)
SOT-223
7 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
ON Semi Automotive LED driver overview
Interior Lighting
Rear Combination Lamps (light guides)
Front lighting (1st generation)
Atmosphere Lighting
A p p l i c a t i o n C h a r a c t e r i s t i c sPower LED’s
Medium to high total power
Up-to 125dC ambient
Low system Integration
NCV7680 RCL, DRL (Daytime Running Lights) CHMSL (Center High Mounted Stop Lamps)
NCV3065/6 1.5 A Constant Current Switching Regulator for LEDs w/ enable
Linear &Switched
Mode Regulators
8 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
NCV7680 Typical Application
The part is
designed to run at
35mA per string
(typ).
9 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Paralleling outputs
OUT1
NCV7680
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
VP
GND
RTAIL
RSTOP
DIAG
STOP
FB
Ballast Drive
C3
1uFC1
0.1uF
MRA4003T3G
NTD2955
R3
1K
R1
10K
C4
10nF
R4, 1.4K
R6
8.87K
R7
1K
C2
0.1uF
LED Switch
LED Module
All 8 outputs are tied
together and driven at
maximum current.
The maximum current
per string is 75mA.
This yields 600mA total
in the output.
10 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Daytime Running Light with NCV7680
11 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
NCV3065– Constant Current Buck Regulator for LEDs
The NCP3065 is a switching regulator designed to deliver constant current to LEDs. Hysteretic control with an
external resistor allows the converter output voltage to adjust as needed to deliver a constant current to series and
series-parallel connected arrays of LEDs of varying number and type.
Unique Features Benefits
Others Features
•Integrated 1.5A switch
•Wide Vin from 3 to 40V
•0.2V Voltage Reference
Value Proposition
•High current output
•Allows use in many
versatile applications
•Low power sense resistor
•1.5 A peak current
•Ability to add external transistor to increase output
current up to 5 A
•2% accurate internal reference
Market & Applications
•Consumer Electronics: LCD backlighting
•Automotive: Interior lighting, Infotainment
•Industrial: Industrial lighting, general illumination
Typical Application Diagram & Package Info
Ordering Info & Support
• PDIP-8, SOIC-8, DFN-8
• NCP3065: -40 to +125°C
• NCV3065 - Automotive Grade
NCP3065
NC
IPK
VCC
Comp
SWC
SWE
TC
GND
Vth = 0.2V
No Loop Compensation
Required
Small Sense Resistor (0.7)
For Higher Efficiency
Low Voltage
Reference
12 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Constant Current Buck Regulator for LED
Low voltage AC or DC power supply
Configurable output LED current
Dimming capability
13 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
NCP3065 as Boost Regulator for LED
AND8289 discusses
boost LED Driver Circuits
Optional
Open LED
protection
Optional
Dimming
Control
Demo Board
14 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
NCP3065 as a Controller
• The NCP3065 can also be used as a controller
– Boost: Higher output voltage and/or current is desired
=> e.g: DRL Application.
– Buck: Higher output current is desired
– Increased efficiency is desired
Boost example with 100V External N-FET
15 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Power LED front lighting
System-on-chip
ON Semi Automotive LED driver overview
Front lighting (High beam, Low beam, DRL, Position light, Turn Indicator, Fog, Static Cornering, Side marker,…)
AFS
A p p l i c a t i o n C h a r a c t e r i s t i c s
Power LED’s
Medium to high total power
Up-to 125dC ambient
System-on-chip
NCV786XX product line
See further in this presentation
16 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Application diagram
VBB
VGATE
1A
LEDCTRL1
Optional temp sensing
LED-string 1
SPI_SCLK
SPI_SDI
SPI_SDO
SPI_SCS
T
IBS
TS
EN
SE
-
IBS
TS
EN
SE
+
GND GNDP
LBCKSW1
VTEMP1
VLED1
LEDCTRL2
DIAG1
DIAG2
ON-Semi
Buck-Boost
LED driver
NCV_78663
Optional
μC
CAN
Or
LIN
L_boost
FET_boost
C_boost_IN
C_boost_OUT
1A
Optional temp sensing
LED-string 2
T
LBCKSW2
VTEMP2
VLED2
IBCK2SENSE-
IBCK2SENSE+
LBCKSW1
IBCK1SENSE-
IBCK1SENSE+
L_buck_1
L_buck_2
C_buck_1
C_buck_2
R_buck_1_sense
R_buck_2_sense
R_boost_sense
VINBCK1
VINBCK2V
BO
OS
T
TST1 TST2
Light ECU
Configuration examples for 2 LED string solution
Configuration A:
Low-beam Typical 55V / 0,7A (= 38,5W)
High-beam Typical 55V / 0,7A (= 38,5W)
Configuration B:
DRL/Position light function Typical 16V / 0,35A (= 5,6W)
Turn indicator Typical 20V / 0,7A (= 14W)
Configuration C:
Fog light Typical 18,5V / 0,7A (= 13W)
Static cornering light Typical 18,5V / 0,7A (= 13W)
17 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
Power LED Driver Roadmap
Production Development Planning Exploring
NCV78663
PWR LED Bst/2Bck 0,7A/60V
1 x Boost – ext sw.
2 x Buck – int sw. 1,2A
SPI
(*)NCV78662
PWR LED Bst/2Bck 0,35A/60V
1 x Boost – ext sw.
2 x Buck – int sw. 0,35A
SPI
(*) Part numbers to be confirmed
(*)NCV78653
PWR LED Bst/Bck 1,5A/60V
1 x Boost – ext sw.
1 x Buck – int sw. 1,5A
SPI
(*)NCV78652
PWR LED Bst/Bck 0,35A/60V
1 x Boost – ext sw.
1 x Buck – int sw. 0,35A
SPI
(*)NCV78622
PWR LED 2Bck 0,35A/60V
2 x Buck – int sw. 0,35A
SPI
Fu
ncti
on
ali
ty
Full integrated
solution for
2 LED strings
Full integrated
solution for
1 LED string
Extension for
2 LED strings
Time
Proto eval. kit: 2010-CW17
Proto samples: 2010-CW20
Final proto: 2010-CW44
Final silicon: 2011-Q1
PPAP: 2011-Q2-end
18 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
VBB VGATE
1A
Digital
Control
OTP
LEDCTRL1
Op
tio
na
l te
mp
se
nsin
g
LE
D-s
trin
g
I_S
en
se
I_S
en
se
2 X
SPI
SC
LK
SD
I
SD
O
SC
S
T
100nFV
BS
TS
EN
SE
+
VB
ST
SE
NS
E-
GND GNDP
IBC
KxS
EN
SE
-
IBC
KxS
EN
SE
+
VINBCKx
LBCKSWx
VT
EM
Px
VL
ED
x
LEDCTRL2
DIAG1
DIAG2
Optional
μC
CAN
Or
LIN
Some details on Application Diagram & Externals
Power supply (VBAT) & Dimming control
External control units (optional)
Input filter
Booster power components Boost shunt resistor (input current limitation)
LED Sense resistor (color temp regulation)
HIGH SIDE CURRENT SWITCH for higher fault tolerance
Buck power components
Output capacitors (EMC)
LED string
Integrated boost controller (with EMC filtering algorithm)
Integrated buck regulators(with dimming and
automatic power deratingcapability)
Parameter settings
Digital communication interface
Diagnostics feedback for LED strings
19 • Template • Nov-09 Confidential Proprietary
ON Semiconductor Confidential
NCV78863 DEMO KIT: OVERVIEW
NCV78663 DEMO BOARD
ECUSIM MKII (SPI)
60W power supply
CABLING
LED MODULES (OSRAM)
NCV78663 DAUGHTERBOARD
20 • Template • Nov-09 Confidential ProprietaryON Semiconductor Confidential
Confidential Copy
END OF PRESENTATION