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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www.st.com/edesignsuite

1. Insert application spec

2. Select LEDs

3. Get your application and fine tune it

Software tools

eDesignSuite The smart way to design LED lighting applications

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

61

LED Lighting

For further information

www.st.com/ledlighting

For more information