Post on 23-Mar-2018
transcript
Power Supply for LED lighting20W to 75W
Global Lighting Market moving to LED 2
CAGR 2015 - 2020
15% for LED
Source: McKinsey Report– Lighting the way perspective on the global lighting market
Offline LED Applications by Power Level3
Indoor lighting,
residential and street
lighting
Street lighting
Bulb replacement/
spotlight for indoor
Low Power(P≤ 15W)
Applications addressed
Medium Power(15W < P≤ 75W)
High PowerP>75W)
Power Level
Two or Three stagesSingle stage
Isolated and Not-Isolated, Single and Multi String, Analog and Digital solution
Application SegmentationLED Lighting
Application Power ST Products (AMS-IPD)
Residential 0-25W• Controllers & Convertors
• HVLED00x (HV 15W – 75W)
• HVLED80x (HV 0 – 15W)
• L656x (PFC)
• L6599A (LLC)
• LED2000, 5000, 6000 (up to 3A)
• LED6001 (advanced driver)
• LED770x (multi row DC-DC)
• STPxy, LEDxy (LED array drivers)
• STLUX (digital)
• TSM10x /SEA0x
• MOSFETs
• K5 (HPF flyback)
• M2 (PFC, LLC)
• F6 (p-ch) / F7 (n-ch) (Buck /reverse Buck)
• Drivers
• PM88x1
• L638x, L639x
• Rectifiers
• Schottky (60 – 200V, 0 – 10A)
• Ultrafast (200 – 600V, 0 – 5A)
• Protection
• STRVS
• Communication
• PLC ST75x0
• RF
• Sensors
• Temperature
Hospitality 0-50W
Retail 20-50W
Office 25-75W
Industrial 50-200W
Architectural 25-150W
Outdoor
Street 25-200W
Signage &
Displays5-150W
Motivation
• 20W to 75W lighting applications widely spread in EMEA
• Professional indoor lighting
• Office buildings
• Shops
• Public buildings
• Outdoor lighting
• Architectural
• Street lights
• Parking
• Galleries
• Public squares
5
6Key requirements in the application
• High efficiency > 90%
• High Power Factor > 0.95
• Low T(otal) H(armonic) D(istortion) - THD
• High Accuracy
• Low EMI
• Constant Current / Constant Voltage control
• Safety (Mains supplied application)
• Robustness (Life time, MTBF)
LED lighting General Illumination Applications
Architecture
Office
Retail
PanelsStreetlight
20W < P < 75W – Isolated High Power Factor Flyback
*CV/CC = Constant
Voltage/Constant Current
AC
High Power Factor Flyback converter
Diode
Clamp
MOSFET
Control IC
driver
Diode
DC-DC post
regulation
MOSFET
Diode
CV/CC*
Controller
Reference
OR
LED lighting General Illumination Application
LED Driver is Specific SMPS
25W < P < 75W – Isolated High Power Factor Flyback
If the input power is
above 25W, drive must
fulfill high power factor
requirement according to
IEC61000-3-2 class C
• CC if a LED string is directly
supplied from the output
• CV if the driver is separate
module
• CV if more separate LED
strings are controlled
V
I
V
I
Low PF
High PF
Output regulation:
Constant Current
Constant Voltage
AC
High Power Factor Flyback converter
Diode
Clamp
MOSFET
Control IC
driver
Diode
DC-DC post
regulation
MOSFET
Diode
CV/CC*
Controller
Reference
OR
LED lighting General Illumination Application
EN61000-3-2
25W < P < 75W – Isolated High Power Factor Flyback
Equipment divided in 4 classes:
Class A: balanced three-phase equipment, household appliances, dimmers for
incadescent lamps, audio equipment and that not included in the other classes
Class B: portable equipment
Class C*: lighting equipment
Class D: PCs, PC monitors, and TV receivers with input active power < 600W
Class C
Harmonic
order n
Max. harmonic current
(% of fundamental)
2 2
3 30 · PF
5 10
7 7
9 5
11 n 39 3
For lighting equipment having an active input
power > 25 W, the harmonic currents shall not
exceed the relative limits given for Class C.
1
22
0
1
2 cos cos
2n
n
I
rms fundamental currentPF
rmscurrentII
LED lighting General Illumination Application
Output regulation
25W < P < 75W – Isolated High Power Factor Flyback
LED illumination is (almost) linear proportional
to LED current
To control LED illumination we need CC
CC – is mandatory for direct LED control
CV – in some cases CV is enough
• Mains LED driver is universal & LED
control is realized inside LED lamp
• Driver supplies several separate LED
strings requiring independent control
• Very precise and fine PWM dimming
required
Illumination
LED current
AC
High Power Factor Flyback converter
Diode
Clamp
Mosfet
Control IC
driver
Diode
DC-DC post
regulation
Mosfet
Diode
CV/CC*
Controller
Reference
OR
LED lighting General Illumination Application
Product Mapping
ADJ Voltage Reference
family
TSM101, TSM103W,
SEA05, SEA05L, SEA01
CC/CV controllers
20W < P < 75W – Isolated High Power Factor Flyback (HPFF)
K5 Power MOSFET
(800V – 1050V)
M2 Power MOSFET
(600V/650V)
Ultrafast diode600V/1-2A
Schottky diodes
(30V - 200V)
Ultrafast diodes
(200V – 400V)
HVLED001, (HVLED003)
HVLED005
HPFF controllers
STRVS
TVS
Field effect
rectifier diode
(45V – 100V)
*CV/CC = Constant
Voltage/Constant Current
LED2000, LED5000,
LED6000, ST1CC40,
LED6001
DC-DC LED drivers
F7 – N Power Mosfet
(60V – 100V)
F6 – P Power Mosfet
(60V – 100V)
LED lighting General Illumination Applications
Typical schematics & product mapping
20W < P < 75W – Isolated High Power Factor Flyback – AC/DC
CC/CV
Controller
Opto
PWM
Controller
ST*N80K5,
ST*N95K5K5 MOSFET
800V-1050V family
SEA05Advanced CV/CC
secondary controller
SEA01CV/CC controller with
online digital trimming
STRVSTVS
STPS*Schottky
diodes
TSM10*CC/CV controllers
standard family
STTH*Ultrafast high
voltage rectifier
>200V family
HVLED001/05 (/03)High power factor off-line
LED controller
STTH*L06Ultrafast high
voltage rectifier
(600V)
SMAJx, SMxT,
P6KE, SMA6J
ST*N60M2
ST*N65M2M2 MOSFET
600V/650V family
FERD*Field effect
diodes
Note:
CC/CV Controllers are
used if AC/DC directly
control LED (CC is
mandatory).
If the post regulation is used
the output is CV and the
built in PSR is used => no
CC/CV circuit and no Opto
LED lighting General Illumination Applications
Typical schematics & product mapping
20W < P < 75W – Post regulation – CC buck converter
ST*N6F7, ST*N8F7, ST*N10F7F7 MOSFET
60V-100V family
STLUX + PM8841/51Digital control + driver
PWM
Controller
CC DC-DC
Converter
STPS*L40, STPS*L60, STPS*H100, Schottky diodes
Mostly 40V to 100V
L6562APWM controller
LED2000, ST1CC40,
LED5000, LED6000LED DC-DC Converter
ST*P6F6, ST*N10F6F6 MOSFET
60V-100V family
PWM Ctrl
HVLED family
Offline LED drivers
AC
High Power Factor Flyback converter
Diode
Clamp
MOSFET
Control IC
driver
Diode
DC-DC post
regulation
MOSFET
Diode
CV/CC*
Controller
Reference
OR
RDSON 11 Ohm
RDSON 11 Ohm
RDSON 6 Ohm
HVLED805
HVLED807PF
HVLED815PF
HPF
HPF
HVLED family15
EMBEDDED 800V MOSfet
FULL PRIMARY SIDE CC AND CV
RETROFIT AND POWER SUPPLY
HVLED8xxController + MOSfet
CONTROLLER + START UP
HIGH POWER FACTOR
TRIAC DIMMING COMPATIBLE
THD < 10%
HVLED001
HVLED003D
HVLED005
HVLED0xxController Stand Alone
2015
2015
ES Nov 15
MP Q1 2016
ES Oct 15
MP Q1 2016
3W – 12W
13W – 24W
25W-60W
>60W
16
HPF Flyback Voltage Primary Sensing Regulation controller (PSR-CV)
HVSU VCC
ZCD
GD
CSFBGND
CTRL
HVLEDxxx
Rcs
Rzcd
Rfb
Cvcc
Clamping
Devices
DSEC
Cout
Vout+
Vout-
CinFilter
and
Rectifier
AC_P
TOFF
Ccomp_s
Rcomp_s
Rss
Css
HVLED001
Quasi Resonant Flyback (Peak Current Mode)
800V HV startup & Mult fast start-up, high efficiency,
no HV bom, THD<10%, PF>0.98
Adj Frequency fold-back for low-load dimming
(0-10, PWM) high perfomance
Primary side control of the output voltage (PSR-CV)
Full set of auto-restart protections
Overload
Short and Open Circuit
Opto-coupler failure
Input Overvoltage (Surge) & Undervoltage
Transformer/Inductor Saturation
Smart Auto Recovery Timer
SSOP10 package (SO8 size)
HVLED001 -- AC-DC LED Lighting ICs
HVLED001Competitive advantages
Integrated 800V HVSU
Short BOM
Efficiency
Robustness
Fast LED start up
Multiplier and THD optimizer
High PF and low THD
Regulation compliancy
Reliability and BOM cost
Fast reaction to line variation
Frequency Foldback
Current regulation accuracy even at very light load (dimmable AC/DC and DC/DC)
Efficiency at medium load
Accuracy in Voltage regulation
Low EMI at light and medium load
Primary side control(CV)
Minimum BOM count and cost
Robust design
Longer application life time
STEVAL-ILL070V1
35W Constant Current (CC) Board18
HPF Flyback controller
Wide input voltage range (90-305 Vrms)
CC loop with open load voltage limiting
Output: 700mA & up to 48V
Dimming: 100% to 10%
Dimming interfaces: 0-10V and PWM input
STEVAL-ILL069V1
35W Constant Voltage (CV) Board19
HPF Flyback controller
Wide input voltage range (90-305 Vrms)
CV loop (CC with add-on board)
Primary side regulation no optocoupler
Output: 48V – up to 730mA in full Vin range
Short circuit protection with auto-restart
0.0%
10.0%
20.0%
30.0%
40.0%
50.0%
60.0%
70.0%
80.0%
90.0%
100.0%
25 225 425 625
Eff
icie
ncy (
%)
Iout (mA)
Efficiency vs IOUT at 48V
300
277
230
110
0
2.5
5
7.5
10
12.5
15
0.9
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
85 140 195 250 305
Vin (VRMS)
PF
THD
PF and THD vs Line
20
25/02/2016
HVLED001: 35W Class II Isolated QR Flyback Wide Voltage & Current range - High Power Factor - Low THD solution
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
100 120 140 160 180 200 220 240 260 280 300
Effi
cien
cy
Vout (V)
Efficiency VS Vac @ Vout=60VEfficiency vs LINE
Vin(V)
>90% @ Full Load ~90% @1/2 Load >80% @ 1/4 Load
PF>0.9 wide range
THD<15% wide range
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
0 5 10 15 20 25 30 35 40 45
Effi
cie
ncy
(%
)
VOUT (V)
277
230
150
110
100 %
50 %
Efficiency vs VOUT @700mA
100 %
50 %
HVLED001 Competion overview
21Comp 1 Comp 2 Comp 3 Comp 4 HVLED001 HVLED001 Advantage
HV StartUp No No Yes NoYes
(800Vmax)
Helpful for robust design
BOM cost reduction, downsizing of PCB &
Helpful for robust design
Vcc Charge Current
at start-upn.a. _ 9mA (max) n.a.
3.5mA
(typ)
Avaliable faster turn on for LED lighting
application
ON/OFF Control No No No Yes
Yes
(CTRL Pin / FB
pin)
Easy to use for ON/OFF control
Shutdown
Quiescent Current1.2mA _ _ _
500uA(max)
VCTRL<VCTRL,di
s
Very Low current comsumption during standby.
Soft Start Yes Yes Yes Yes YesReduce input inrush current at power up
ZCD blanking
time/Frequency
Foldback
Adjustable No No No Adjustable
Helpful for robust design, smart management of
long blanking times. Low load good regulation
accuracy and efficiency
Input voltage
sensing
External R
dividerExternal R External R
External R
divider
Integrated on
HVSUBOM cost reduction & Helpful for robust design
Inductor Saturation
ProtectionYes No
Overcurrent
protection
Overcurrent
protectionYes Helpful for robust design
Input Overvoltage
ProtectionYes No No No Yes Helpful for robust design
Brownout Protection No No No Yes Yes Helpful for robust design
Open Loop
ProtectionYes Yes Yes Yes Yes Helpful for robust design
Short Circuit
DetectionYes Yes Yes Yes Yes Helpful for robust design
Primary Side
CV Regulation
Yes (also CC
PSR)
Yes (also CC
PSR)
Yes (also CC
PSR)
Yes (also CC
PSR)Yes BOM cost reduction & Helpful for robust design
Burst mode No No No No Yes The control of very low output power is allowed
TRIAC DIM No No No No No
Gate Driver - -0.06/+0.18A - - -0.3A/0.6AOptimized for up to 100W output, LED lighting
application
Package SO8 SO8 SO8 SO8 SSOP10 Helpful for downsizing of PCB
22
HPF Flyback Voltage controller (PSR-CC) – TRIAC dimming compatible
HVLED003 -- AC-DC LED Lighting IC
• Quasi Resonant Flyback (Peak Current Mode)
• Primary sense current regulation (PSR CC)
• ± 3% accuracy on constant LED output current
• TRIAC dimming compatible
• PWM/0-10 dimming compatible
• Deep dimming (<5%)
• High power factor capability (> 0.9)
• THD <10% in universal input range
• Open or short Fault LED string management
• Start-up and Self supply
• Thermal protection
• SO10 package
ES end October ´15
Mass production Q1/2016
23
HPF Flyback Voltage Primary Sensing Regulation controller (PSR-CC) with HV start up
HVLED005 -- AC-DC LED Lighting IC
• Quasi Resonant Flyback (Peak Current Mode)
• Primary sense current regulation (PSR CC)
• ± 3% accuracy on constant LED output current
• 800V HV startup & Mult: fast start-up, high
efficiency
• PWM/0-10 dimming compatible
• Deep dimming (<5%)
• High power factor capability (> 0.9)
• THD <10% in universal input range
• Open or short Fault LED string management
• Start-up and Self supply
• Thermal protection
• SO10 package
ES End November ´15
Mass production Q1/2016
The MOSFETs
AC
High Power Factor Flyback converter
Diode
Clamp
MOSFET
Control IC
driver
Diode
DC-DC post
regulation
MOSFET
Diode
CV/CC*
Controller
Reference
OR
VS VMVRVIN
Reflected Voltage
VR = 50 – 200V typically
Leakage inductance spike
Limited by peak calm circuitVSPIKE = 50 – 200V typically
MarginVMargin = 10 – 30% typically
What HV MOSFET family to select?
VMARGIN
VSPIKE
VR
VIN
Drain – Source (D-S) Voltage
INOUTR VD
DnVV
1
Break down mosfet D-S voltage
Input voltageVINmax = 265VAC * 1.414 = 380V
SUM
Min: 380V + 50V + 50V + 100V = 580V
Max: 380V + 200V + 200V + 200V = 980V
M2
K5
Reflected voltage?
Higher reflected voltage VRPros and Cons
(+) Reducing voltage stress over diode => lower voltage rated diode = lower diode
conductive loses
(+) Reducing turn ON MOSFETs voltage in QR mode (HVLED001) = reduction of
switching losses in mosfet
(+) Leads to using lower RMS current on the primary side = lower primary
conductive losses
(-) Requiring higher voltage level rated MOSFETs (either higher cost or higher
Rdson)
(-) Leads to higher RMS current on the secondary side = higher conductive losses
in transformer and capacitors
MDmesh M2 MOSFETs LED Lighting27
HV Super Junction MOSFET:
MDmesh M2
KEY FEATURES
• Extremely low Qg
• Optimized for light load conditions
• 600V/650V BVdss rated
BENEFITS
• Low conduction and switching
losses in PFC and soft switching
(LLC)
• Easy to drive
VEHICLE: STEVAL-ILL042V2
60W LED power supply
MDmesh K5 MOSFETs LED Lighting28
Very High Voltage Super-
junction MOSFET: MDmesh K5
Main FEATURES
• High BVDss (> 800V) and Low Qg
• Very low Coss / Ciss
• Very low RDS(on) thanks to
Super-junction technology
• Small packages available as
Power FLAT 5x6 VHV
KEY BENEFITS
• Higher safety Margin (Thanks to
large BVdss range)
• Outstanding Dynamic behavior
• Inductor size reduction
STEVAL-ILL042V2
60W LED power supply
29
Main FEATURES
• Among the lowest RDS(on)*area
• Best parasitic diode performances
for higher efficiency and lowest EMI
• Optimal capacitance Crss/Ciss
ratio
• Small packages available as
Power FLAT 5x6 VHV
• P-channel F6 series -60 to -100V
in trench technology for imprved
RDS(on)
KEY BENEFITS
• Higher efficiency in buck / reverse
buck
• Lowest EMI
• PCB optimization thanks to
PowerFLAT package familiy
STEVAL-ILL043V1
75W two independent LED strings power supply
F7 & F6 (P-ch) MOSFETs LED Lighting
30
LED
topology
3W – 15W
Monolithic Solution
PWM Controller
15W – 75W
FLYBACK Topology
Transition Mode PFC controller
PWM High PFC FLYBACK
HVLED001
> 75W
Transition Mode PFC
+
PWM Controller
PFC Resonant Converter
MDmeshTM K5 series STxN80K5
MDmeshTM K5 series
STx7N80K5
STx6N95K5
STx15N80K5
STx7N60M2
STx10N60M2
STx13N60M2
50W / 75W
> 75W
25W / 50W
STx18N65M5
STx20N65M5
STx7N60M2
STx10N60M2
STx13N60M2
STx5N60M2
STx6N60M2
LED application tree (primary side)
MDmeshTM M2
Series
MDmeshTM M2
Series
MDmeshTM M2
Series
MDmeshTM M2
Series
The Rectifiers and Protection
AC
High Power Factor Flyback converter
Diode
Clamp
MOSFET
Control IC
driver
Diode
DC-DC post
regulation
MOSFET
Diode
CV/CC*
Controller
Reference
OR
MOSFET protection - Customer challenges
• TVS used for MOSFET protection (or IGBT)
• When MOSFET switches off, the transformer
releases its energy
• Voltage at transformer nodes increases
• Voltage seen from MOSFET is
VMOSFET= VIN + VDIODE + VTVS
• When Transformer voltage is too high, the
TVS clamps and avoids VMOSFET > VBR MOSFET
• VMOSFET MAX = VIN + VCL + VF
32
- No protection.
- Test to be performed to know
max VDS
- MOS / IGBT to be oversized
in voltage (more expensive,
efficiency drop)
Implementation
VIN VOUTVIN VOUT
VDS
VIN VOUT
- RC to limit dV/dt, then to limit
overvoltage
- slope may vary depending on
components
- margin on VDS is depending
on components
- VCL given at very high current
with single surge
- test to done for validatation
- Maximum clamping voltage
only depending on STRVS
- datasheet / product adapted
to repetitive surges
- margin on VDS can be easily
calculated
- plug and play solution
Using of STVRS bring benefits compare RCD
- Sharp voltage limitation independent on the power flow level
- No power losses at light load => better stand by
Standard TVS versus STRVS
1st improvement: specification with 8/20 µs
2nd improvement: RD specification with 8/20 µs
at high current
3rd improvement: RD specification at 2 A
to better fit the application
4th improvement: RD specified at 125oC (worst case)
Existing ST portfolio35
Part Numbers Tj Max Vcl Wave Package
STRVS118X02C 150°C 118V (typ) at 2A at 125°C SMC
STRVS142X02F 175°C 142V (typ) at 2A at 125°C DO-201
STRVS182X02F 175°C 182V (typ) at 2A at 125°C DO-201
STRVS185X02B 150°C 185V (typ) at 2A at 125°C SMB
STRVS185X02E 175°C 185V (typ) at 2A at 125°C DO-15
STRVS222X02F 175°C 222V (typ) at 2A at 125°C DO-201
STRVS225X02E 175°C 225V (typ) at 2A at 125°C DO-15
STRVS241X02E 175°C 241V (typ) at 2A at 125°C DO-15
STRVS248X02C 150°C 248V (typ) at 2A at 125°C SMC
STRVS252X02F 175°C 252V (typ) at 2A at 125°C DO-201
STRVS280X02F 175°C 280V (typ) at 2A at 125°C DO-201
SM6T220A 150°C 328V (max) at 2A at 25°C 10/1000 µs SMB
SMA6J 150°C 134V (max) at 4.6A at 25°C 10/1000 µs SMA
Rectifiers’ products range 36IFAV
VRRM
Signal Schottky
diodes
Power Schottky diodes
Field-effect
rectifiersSiC diodes
Ultrafast bipolar rectifiers
37
Diodes
Power Schottky diodes 60V to 200V series
Main features
Thin and small packages improve
power density
Reduced switching losses (no
reverse recovery)
Low conduction losses
- 40°C to 175°C operating temp.
allows indoor and outdoor
applications and improve the
reliability
SMB Flat
DPAK
SMA Flat SMB
TO-220AB TO-220FPAB
D2PAK
170V
1A, 2A, 3A
High efficiency
@full load
STPS*170
Output diode in
Flyback topology
200V
2A, 4A, 2x10A
High efficiency
@full load
STPS*200
Output diode in
Forward topology
170V and 200V suitable families 200V/2x10A suitable families
Applications
Field-Effect Rectifiers
VF
Ir
VRRM = 45V
STPS30L45
(barrier 1)
STPS3045
(barrier 2)
FERD30M45VRRM = 45V
New ST Patented Technology Providing best in class VF/IR trade-off
not achievable with standard Power Schottky technology
Ultra low VF technology For a better efficiency
Higher current density (A/mm²) Package size reduction / saving space
Best In Class VF/IR For an optimized design
Lower dependency of IR versus Tj Lower thermal runaway risk
Lower VF value at low temperature Efficiency improved at light load
45, 50, 60 & 100V Qualified & in Production – Scalable up to 200V
FERD positioning
Typical positioning
39
Price
Efficiency
Schottky~P - 25% to -75%
~η - 0.25% to -1.04%
FERDRef price (P)
Ref efficiency (η)
Sync Rec(MOS + Ctrl)~P: from +40% to + 130%
~η: from +1.3% to +1.65%
• Note: FER diodes also bring other advantages:
• No thermal runaway risk vs. low-VF Schottky diodes.
• Lower space on the PCB (1 package) vs. Sync Rec.
• Better efficiency at light load
Depending on applications & products
(1) Highly dependent on RDS(ON)
(2) Highly dependent on type of Schottky (1)
(2)
Products range 40
Already in M/P M/P in Q4 2015
30V
45V
50V
60V
20A 30A 40A 60A20A
100V
FERD20U50DJF
PowerFLATTM 5x6
FERD20U60DJF
PowerFLATTM 5x6
FERD20M60ST
TO-220AB
FERD20SM100DJF
PowerFLATTM 5x6
FERD30SM100
PowerFLATTM 5x6
TO-220AB
FERD30M45C
TO-220AB, D²PAK,
I2PAK
FERD40U45C
TO-220AB, D²PAK
FERD60U45C
TO-220ABD
FERD40M45C
TO-220AB, D²PAK
FERD60M45C
TO-220ABD
FERD40SM100S
TO-220AB
Constant Voltage / Constant Current Controller
AC
High Power Factor Flyback converter
Diode
Clamp
Mosfet
Control IC
driver
Diode
DC-DC post
regulation
Mosfet
Diode
CV/CC*
Controller
Reference
OR
CC/CV - Current and Voltage control
Performs the output voltage and the output current regulation at the SMPS secondary side
Constant Voltage (CV) regulation implemented with Voltage control scheme
Constant Current (CC) regulation implemented with Current control scheme
Single controller for CC and CV which typically integrates a voltage reference and two op-amps
42
TSM1013
4 5
3 6
2 7
1 8
-
+
+
-Cv Out
Gnd
Cc Out
Vcc
Cv-
Cc+
Cc-
Vref Vref
Typical Block scheme
Typical Application Circuit 43
Primary
controller
~
Rsense
Iout
Vout
R2
R1
Ric2
Ric1
Cic1
Cvc1Rvc1
R4
R5
Cv Out
Cc Out
TSM1013
4 5
3 6
2 7
1 8
-
+
+
-
Gnd
Vcc
Cv-
Cc+
Cc-
Vref
Vref Rled
Vout = Vref ∗R1 + R2
R1Vsense = Vref ∗
R5
R4 + R5Vsense = Rsense ∗ Ilim
• Ilim: desired limit current
• Vsense: Threshold voltage for the current control loop• Vout: desired output voltage
CC/CV controller selectionfor 25W to 75W LED lighting applications
44
6 pin devices 8 pin devices
CC/CV -- 6/8 pin – Features Table 45
TSM1052 SEA05 SEA05L TSM101 TSM103
Pin # 6 6 6 8 8
Package SOT23-6 SOT23-6 SOT23-6 DIP8
SO8
SO8
Vcc range 1.7V - 18V 3.5V - 36V 3.5V - 36V 4.5V - 32V 3V - 32V
±1.5V - ±16V
Vref
precision
1.21V
0.5%
2.5V
0.5%
2.5V
0.5%
1.24V
1%
2.5V
0.4%, 0.7%
Current
Threshold
200mV 50mV 50mV Adjustable Adjustable
Icc Typ 150uA 200uA 250uA <2mA 0.7mA
Temp. range -10C, 85C -25C, 125C -25C, 125C -20C, 80C (TSM101C/AC)
-40C, 105C (TSM101I/AI)
-40C, 105C
Components Voltage
reference, two
ored op-amps
Voltage
reference, two
ored op-amps
Voltage reference, two ored
op-amps. LED pilot lamp
driver pin implemented with
an open drain mosfet driven
by an oscillator (1KHz,
12.5% duty cycle)
Voltage reference, two
ored op-amps, current
source to offset the
current sense information
Voltage reference
TL431, two independent
op-amps
Main Feature Low voltage
operation, low
quiescent
consumption,
high-accuracy
internal
reference
Low quiescent
consumption,
high-accuracy
internal
reference
Very efficient LED pilot lamp
driver. LED pilot-lamp driver
pin implemented with open
drain output stage (ILD ≤10
mA) driven by square
waveform with 12.5% duty
cycle at 1kHz.
Low quiescent consumption,
high-accuracy internal
reference.
Low Icc
Space & Cost saving
ESD 1.5KV
46
TSM101x TSM103 TSM1011 TSM1012 TSM1013 TSM1014 TSM1052 SEA05/L SEA01*
PackageDIP8
SO8SO8
SO8
MiniSO8
SO8
MiniSO8
SO8
MiniSO8
SO8
MiniSO8SOT23-6L SOT23-6L SO8
Vcc range 4.5V - 32V3V - 32V
±1.5V - ±16V4.5V -28V 4.5V -28V 4.5V -28V 4.5V -28V 1.7V - 18V 3.5V - 36V 3.5V - 36V
Vref 1.24V 2.5V 2.545V 1.25V 2.5V 1.25V 1.21V 2.5V 2.5V
Precision 1% 0.4%, 0.7% 0.5%, 1% 0.5%, 1% 0.5%, 1% 0.5%, 1% 0.5% 0.5%
trimming step
Vout 0.2%
Iout 3.3%
Current
VthAdjustable Adjustable Adjustable Adjustable Adjustable Adjustable 200mV 50mV 30mV
Icc Typ <2mA 0.7mA <1mA 100uA <1mA 100uA 150uA 200uA 200uA
Temp.
range
-20C, 80C 1)
-40C, 105C 2) -40C, 105C 0C, 105C -40C, 105C 0C, 105C -40C, 105C -10C, 85C -25C, 125C -25C, 125C
• Single controller that performs the output voltage
and the output current regulation at the SMPS
secondary side for CC and CV
• Constant Current (CC) Control Mode or
Constant Voltage (CV) Control Mode
• Typically integrates a voltage reference and two
op-amps
Single String: CC/CV Controllers
1) TSM101C/AC 2) TSM101I/AI * CC/CV with on-line trimming
In case VOUT > 36V, ext. components can be
used to lower the voltage & supply the CC/CV
47
Evaluation Boards
Evaluation boards by power and topology for analog solutions 15W<P≤75W
STEVAL-ILL069V1 STEVAL-ILL070V1
35W HPF Flyback
power supply (PSR-CV)
based on HVLED001
35W HPF Flyback
Dimmable LED single string driver
based on HVLED001 and TSM103
Vin = 90-305 Vac
Vout = 48V ± 2.5%
Efficiency >85% (30-100% load)
PF >0.98 (30-100% load)
THD<10% (90-220V and 30-100% load)
EN60065 compliance
DB2435, DN0029
Vin = 90-264 Vac
Selectable Iled: 700/560/500/350mA
LED string voltage range=0-48V
Efficiency>85% (30-100% load)
PF >0.95 (30-100% load)
THD < 20% (30-100% load)
EN55022 compliance
DB2499
STEVAL-ILL074V1 (*)
60W HPF Flyback
Power supply
based on HVLED001
AN tbd
Vin=90-277 Vac
Vout=52 Vdc
Ioutmax= 1.2A
Efficiency >90% @full load
Safety according with EN60065
Short circuit protection with autorestart
DC-DC LED converters
AC
High Power Factor Flyback converter
Diode
Clamp
Mosfet
Control IC
driver
Diode
DC-DC post
regulation
Mosfet
Diode
CV/CC*
Controller
Reference
OR
49LED ROW Drivers
4V 5.5V
3A
3V
LED2001
LED6001 Boost
ST1CC40
18V
4A
LED6000
LED5000
48V 61V
LED2000
36V
>4A
50LV DC-DC Converters for LED
LED2001 ST1CC40
• Input voltage: 3V to 18V
• Output current: up to 3A
• Switching frequency: 850kHz
• Inhibit for low consumption
• Synchronous Rectification
• Internal Compensation (minimum BOM)
• FB voltage 100mV for low dissipation
Monolithic buck LED driver
with PWM Dimming
Monolithic buck LED driver
with Inhibit
Main features
• Input voltage: 3V to 18V
• Output current: up to 4A
• Switching frequency: 850kHz
• PWM Dimming with deep resolution
• Synchronous Rectification
• Internal Compensation (minimum BOM)
• FB voltage 100mV for low dissipation
Main features
LED2000
Main features
• Input voltage: 3V to 18V
• Output current: up to 3A
• Switching frequency: 850kHz
• PWM Dimming with deep resolution
• Synchronous Rectification
• Internal Compensation (minimum BOM)
• FB voltage 100mV for low dissipation
Monolithic buck LED driver
with PWM Dimming
Flash light
Emergency lights
18V DC-DC LED Drivers
Spot lights
HV DC-DC Converters for LED 51U
p t
o 1
5W
LED6001 LED5000
• Input voltage: 5.5V to 48V
• Output current: up to 3A in buck
• Switching frequency: 850kHz
• Supported: buck, boost, buck-boost
• PWM Dimming with deep resolution
• FB voltage 200mV for low dissipation
Boost controller
for LED driving
Monolithic multi-topology
LED driver
Main features
• Boost Controller
• Input voltage: 5.5V to 36V
• Output voltage: up to 60V
• HS Sensing with programmable VSENSE
• PWM Dimming with deep resolution
• Analog Dimming
Main features
LED6000
Main features
• Input voltage: 4.5V to 61V
• Output current: up to 3A in buck
• Adj. switching frequency: 0.25-1.5MHz
• Adj. peak current limit
• Supported: buck, boost, buck-boost
• PWM Dimming with deep resolution
• FB voltage 250mV for low dissipation
Monolithic multi-topology
LED driver
48-60V DC-DC LED Drivers
Interior & Exterior
Lighting in Automotive
Streetlight &
Multistring
Also Automotive
Grade (ALED6001)
STLUX is Smart Lighting52
•Up to 4 LED strings (Max 50W-1A/ch)
•3% to 100% PWM dimming @ 200Hz
•Remotely controlled via Bluetooth LE
•STEVAL-IDB003V1 based on BlueNRG, installed in the UART connector of STEVAL-ILL057V1
•DALI embedded
STEVAL-ILL057V1
Resources STLUX385A STLUX383A STLUX325A STLUX285A
PWM 6 6 5 4
SMED 6 6 6 6
DIGIN 6 6 6 3
ADCIN 8 8 6 8
CMP 4 4 4 2
CMP with ext. ref 1 1 1 1
GPIO 6 6 4 4
Flash memory 32KB
E2Prom memory 1KB
SRam memory 2KB 2KB 2KB 2KB
ADC gain x1/x4 x1 x1 x1
DALI Y Y Y Y
I2C, Serial Y
Temperature -40C, +105C
Package TSSOP38 TSSOP38 VFQFPN32 TSSOP28
PM8841/PM8851 1A Gate driver for Microcontrolled solutions
• 1A sink and source current capability
• Input threshold external reference
• Wide supply voltage (10-18V)
• Non inverting/inverting solution
• Sink/Source independent pins
(PM8851)
• Short propagation delays
• Input and Output UVLO
• -40÷125 °C
• SOT23-5
53
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2. Select LEDs
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DALI on ST Microcontrollers -
Intelligent Control and
Communication in Lighting
DALI – standard for intelligent light control
Definition:
DALI is an international standard (IEC 62386) lighting control system that
provides a single interface for electronic control gears (light sources) and
devices (lighting controllers).
DALI = Digital Addressable Lighting Interface
Why defined:
• Energy saving: Dimming according to natural light, on-off according to
room occupancy
• Comfort: Computer controlled – automation. Color changing
(cool/warm). Improved productivity at work, more relaxing at home.
• Architectural/fashion: Create different effects using same lights
Scene setting for Lounges, Hotels, Restaurants, shops. Building
illumination.
• General light control: For specific application like theater, stage
lighting…
DALI in LED Lighting
Typical DALI
architecture
RS232/DALI
converter
DALI bus
AC Main
Ballast n
Ballast 1
Level
translator
DALI-
MCU
Level
translator
DALI-
MCU
Ballast 2
Level
translator
DALI-
MCU
DALI main features
Functions: Dimming, On/off switching, Grouping lights to a group for common control, Light scene (state with predefined light properties) storage and selection
Simple wiring: use 2 standards electrical installation cables (no special communication cables), no special wiring topology
Simple installation: cable polarity independency, light source
addressing
Digital host control: use low cost high performance
microcontrollers on light source side
Data rate: 1200 bits/sec
Physical interface: Low V= -6.5V, High V=+22.5V
Individual address in command
Up to 64 receivers: can be connected to DALI control module
LED Lamp1
LED Lamp 2
LED Lamp n
DALI implementation into ST MCU
• IO pin driver• Physical and link layer of DALI interface (bit timing, bus error recovery control, DALI
frames transmission/reception)
• Occupied resources:
• 2 GPIO pins – selectable (RX and TX) + 1 GPIO interrupt
• 1 Timer (DALI protocol timing) + 1 Timer interrupt
• DALI stack layer• DALI commands implementation
• HW independent
• Main user application• Example for STM8S-Discovery
• Example for STM32-Discovery
• Example for STM32L-Discovery
Software emulation of DALI bus + additional DALI stack = DALI library
Hardware Connection for DALI (1/2)
STEVAL-ILM001 STM8S-DISCOVERY kit
Hardware Connection for DALI (2/2)• Order the STEVAL-ILM001 board and STMxx-DISCOVERY kit
• Get the a DALI master module
• ST7DALI kit (link)
• Program STMxx-DISCOVERY with an example program
• Connect the module to the DALI bus and module to STMxx-DISCOVERY
• Control on-board LED as “a lamp” through DALI master
...DALI bus
USB
(as a power
supply)
DALI master
RS232/DALI
converter
ST MCU DALI library – Implementation
1. IO pin driver routines (physical layer)
• Direct pin control
• Interrupt driven reception and transmission (GPIO pins, timer)
• API functions:
• Global initialization• Callback function initialization (called if DALI frame received)• Transmit function (called if DALI frame to transmit)
2. DALI stack routines
• DALI commands processing (called from physical layer)
• Required DALI commands according DALI specification
• API functions :
• Initialization of DALI stack and callback function for light control
• Set of functions for error/failure status check
3. Customer firmware Example
• Implementation of callback functions for light control:• Depends on given light control principle
• Peripherals control for given control (PWM, ADC, DAC, ... )
• Lower layers initialization: IO pin driver, DALI stack
• Calls API functions (transmit, error management, status check functions, ...)
• Implements another customer application details (e.g. LED status, failure notification, power management, ...)
60
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LED Lighting
For further information
www.st.com/ledlighting
For more information