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Lighting Solution from TI. july 2010 Olivier Mellin Europe solution marketing. PART1 Analog Solutions. Analog solutions Digital solutions. TI in LED lighting AC/DC solutions DC/DC solutions. Main Block Diagram. LED driver TLC59xx TPS61xxx/TPS62xxx/TPS402xx PiccoloA-B / MSP430F51x2.

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Lighting solution from ti

Lighting Solution from TI

july 2010

Olivier Mellin

Europe solution marketing


Part1 analog solutions

PART1 Analog Solutions

Analog solutions

Digital solutions


Ti in led lighting ac dc solutions dc dc solutions

TI in LED lightingAC/DC solutionsDC/DC solutions

TI - Lighting Power Products


Main block diagram

Main Block Diagram

LED driver

TLC59xx

TPS61xxx/TPS62xxx/TPS402xx

PiccoloA-B / MSP430F51x2

NextFET

ADC

Metrology

PWM

Controller

MSP430F2xxx

Presence/luminosity sensing

Pre-failure detection

Aging compensation

Dimming scheduler

PowerAmplifier

Communication&Control

MSP430F2xxx, CC430, CC1xxx, CC2530

RS485

LVDS…

Wireless : SimpliciTI, Zigbee, 6LowPan, W-DMX, W-KNX

Wired: DMX512, Dali/DSI, KNX, 0-10V

Presence/luminosity sensing

Pre-failure detection

Aging compensation

Dimming scheduler

Metrology (MSP430 FE)

PGA112 + OPA564

Communication&Control

F2802x/F2803x

PLC: cenelec B SFSK 2400kbps

AC/DC DC/DC regulation

Presence/luminosity sensing

Pre-failure detection

Aging compensation

Dimming scheduler

Metrology (MSP430 FE)

AC/DC

Constant Voltage:

designs database

AC/DC

~220V

TPS92010, TPS92210

UCC28810

Constant Current

For more info:

ESP – home/sales presentations/search for “LED” or “light”

Internal : Infolink/LEDRoom Internal/External: www.ti.com/LED

TI - Lighting Power Products


Ti in led lighting ac dc solutions dc dc solutions1

TI in LED lightingAC/DC solutionsDC/DC solutions

TI - Lighting Power Products


600 led designs evms and namely

600+ LED designs / EVMs and namely:

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Led general illumination applications

LED General Illumination Applications

Low Cost, TRIAC Dimming, PFC, High Efficiency, Color Quality, Safety, Long Life

PFC, High Efficiency,

Dimming, Early Payback, Color Quality, Safety, Maintenance, Eco-friendly

PFC, High Efficiency,

Early Payback, High Brightness, Safety, Maintenance, Eco-friendly

TI - Lighting Power Products


Residential

Residential

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The trouble with triacs

The Trouble with TRIACs

Start of AC cycle TRIAC initially off

C1 charges through R1 and light bulb

When voltage on C1 exceeds DIAC threshold voltage the TRIAC conducts

R1 controls when TRIAC turns ON, dimming function

Light bulb load must maintain TRIAC holding current

TRIAC turns off close to zero crossing and cycle repeats

LED lights do not always consume enough power to keep TRIAC ON

Need to solve this with extra circuitry

Wall dimmer

L

TRIAC

AC Input

DIAC

Dimmer Output

R1

C1

N

Special care is required when making LED lighting compatible to standard TRIAC dimmers

TI - Lighting Power Products

9


Low power light bulb replacement cost performance matrix

Low Power Light Bulb Replacement Cost/Performance Matrix

Performance/Cost

Features

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10


Tps92010evm 7watt led lighting driver

TPS92010EVM 7Watt LED Lighting Driver

  • 120V and 230V input designs

  • Tightly Regulated LED current

  • Compatible with standard TRIAC Dimmers

  • Active holding-current feature

  • High Efficiency

    • Maintained during dimming

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Tps92010evm specification

TPS92010EVM Specification

TI - Lighting Power Products

Note: *Lifetime assumes 35oC internal temp. rise from ambient.


Tps92010evm schematic

Flyback Power Stage

Input Filter

LED Current Control

TPS92010

Dimmer Trigger Circuit

Power Stage Control

Set Point Generation

TPS92010EVM Schematic

A

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Outdoor professional

Outdoor / Professional

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Outdoor professional1

Outdoor / Professional

  • 15W to 240W

  • PFC

  • High Efficiency

  • Dimming

  • Early Payback

  • Color Quality

  • Safety

  • Maintenance

  • Eco-friendly

TI - Lighting Power Products


Lighting solution from ti

High Light Output Drivers Traditional Solution – Power Supply with PFC and Low Voltage DC output LED Strings Driven with Multiple Buck Regulators

Traditional Implementation:

Power Supply

PFC Stage - Required in any implementation

DC-DC Stage - Provides constant voltage and isolation stage

Multiple Bucks- Provides constant current to each LED string

  • Benefit:

  • Allows for individual string dimming

  • Drawbacks:

  • Controller and MOSFET and Inductor required for each LED string

  • Decreased reliability due to many extra converters (N-1 compared to SIMPLEDrive)

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High light output drivers pfc buck multiple strings

High Light Output Drivers – PFC + Buck + Multiple Strings

SIMPLEDrive: PFC + DC-DC + Multiple Buck stages

PFC Stage - Required in any implementation

Low Side Buck - Provides constant LED Current and main control

Series Transformers- Provides constant current to each LED string

  • Benefit:

  • One control section for all string currents,

  • Lower part count, higher reliability and lower cost

  • Drawback:

  • All strings will be dimmed simultaneously (if individual dimming is required)

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Ucc28810evm 003 specification

UCC28810EVM-003 Specification

Note: *Lifetime assumes 35oC internal temp. rise from ambient.

** Designed with reinforced isolation to UL60950 but not certified

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Ti in led lighting ac dc solutions dc dc solutions2

TI in LED lightingAC/DC solutionsDC/DC solutions

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Main led driver types families

Main LED DRIVER types & families

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Tps40211 4 5 to 52v input current mode boost controllers

TPS402114.5 to 52V Input Current Mode Boost Controllers

VIN = 4.5V-52V; UVL

N-channel FET gate driver; 500mA drive current

Soft Start prevents inrush current; has time-out timer when in OCP

Freq adj., 35KHz-1MHz

ENABLE for on/off control

Senses switch current and sets OC threshold; low Isense threshold enables use of small resistor, and lower power dissipation

Provides current feedback in the control loop; detects an OC based on 150mV threshold

External compensation for design flexibility

Features

Benefits

  • Soft Start

  • Enable function

  • Externally compensated

  • Low Isense threshold (150mV)

  • Supports Boost, Flyback, and SEPIC topologies

  • Prevents inrush current

  • On/off control

  • Design flexibility

  • Enables use of small Isense resistors with lower power dissipation

  • Design and implementation flexibility

TPS40211

Applications

  • LED lighting systems

TI - Lighting Power Products

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Tps54160 3 5 to 60v input 1 5a dc dc converter swift tm

TPS541603.5 to 60V Input 1.5A DC/DC Converter - SWIFTTM

EVM/Tool

Features

Benefits

  • Supports Low Output at 1% Initial Accuracy

  • High Efficiency at Full 1.5-A Load Current

  • High Efficiency under Light Load Conditions Extends Battery Life and Saves Energy

  • Small Filter Size or Low Duty Cycle Support

  • Eliminates Beat Noise

  • Reduces Inrush Currents During Startup

  • Easily Implement Sequencing Schemes

  • Program Turn On Voltage Threshold

  • Small Packaging Saves Space

  • Output Voltage Adjustable Down to 0.8V

  • Integrated 200 m High Side MOSFET

  • Pulse Skipping Eco-ModeTM with 116uA Operating and 1.3uA Shutdown Current

  • 300 kHz to 2.5 MHz Switching Frequency

  • Synchronizes to External Clock

  • Adjustable Slow Start Time

  • PG, Enable, and Track Pin

  • Adjustable UVLO

  • Available in 10MSOP PowerPADTM Package

Applications

  • Aftermarket Automotive Accessories: Video, GPS, Entertainment

  • 12V, 24V and 48V Industrial and Commercial Distributed Power Systems

TPS54160EVM-535

Switcher-Pro Tool

TI - Lighting Power Products

22


Tps61500 high power white led driver with 3a switch

TPS61500High Power White LED Driver with 3A Switch

EVM/Tool

Features

Benefits

  • 2.9V to 18V input voltage range

  • 3.0A current switch - integrated FET

    • Four 3-W LEDs from 5-Vin

    • Eight 3-W LEDs from 12-Vin

  • 200kHz to 2.2MHz switching frequency

  • Analog and PWM brightness dimming

  • User defined Soft-start

  • Up to 93% efficiency

  • 14-pin HTSSOP package

  • Wide input supply range for 12-V or 15-V industrial power rails

  • Up to 1-A output current

  • HTSSOP package for best thermal behavior

Applications

  • High brightness LED lighting

  • High power LED supply

TPS61500EVM-369

Analog brightness dimming Implementation

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23


Tl4242 500ma constant current source with open led detection

TL4242500mA Constant Current Source with Open LED Detection

EVM/Tool

Features

Benefits

  • Adjustable Current up to 500mA (+/-5%)

  • Wide Input Voltage Range – Up to 42V

  • LED Open Detection

  • Channel Over-Temperature Protection

  • Short Circuit Proof

  • Reverse Polarity Proof

  • Wide Operating Range: -40ºC to +150ºC

  • Current Programmable by Sense Resistor

  • QFN – 8 pin Power Package

  • Supply Voltage Independent constant current / brightness

  • Programmable constant load current

  • Fault Reporting

I

Q

Battery

PWM

TL4242

Ref

ST

D

GND

Applications

  • LED illumination and intensity control

  • General Lighting

  • Exterior: DRL, fog light, turn lamp, headlamp

  • Interior: vanity, map, courtesy

TL4242EVM-543

TI - Lighting Power Products

24


Part2 digital solutions

PART2 Digital Solutions

Analog solutions

Digital solutions


Www ti com mculighting

www.ti.com/mculighting

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Communication

Communication

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Adding intelligence to led systems power conversion control communication

Adding intelligence to LED systemsPower conversionControlCommunication

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Pros cons of advanced functions

Pros&Cons of Advanced Functions

PRO

  • Highly differentiating features to end customer

  • Dynamically tweaking the efficiency depending on the load

  • Making the most of LEDs:

    • Light when and where needed

    • Improving system lifetime

    • Improving energy efficiency

  • Limited-to-no additional cost compared to LED cost / system cost

    • Piccolo A = 1 high power LED

      CONS

  • Increased system complexity ?

  • Reduced robustness ?

  • Standby power ?

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Microcontroller based ligting evms

Microcontroller-based ligting EVMs

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Adding intelligence to led systems power conversion control communication1

Adding intelligence to LED systemsPower conversionControlCommunication

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Benefits of mcu based power conversion

Benefits of MCU-based power conversion

  • Advanced power algorithms possible

    • PFC, AC/DC, DC/DC, various current control topologies, etc.

  • Integration with Communications/control

  • Improved efficiency over variety of load

  • Design flexibility

  • Multiple strings support without the added cost of LED drive

TI - Lighting Power Products


Led lighting developer s kit

LED Lighting Developer’s Kit

Hardware

  • Piccolo F28035

  • 12-48V DC input to SEPIC DC/DC stage 50V DC output

  • 8 strings of 30 watts

  • Open source hardware, including gerber files, schematics, and BOMs

Software

  • Digital DC/DC SEPIC control

  • Digital independant pulsed current LED driver control

  • Low CPU utilization gives headroom for other system related tasks

Price: $379

Part number: tmdsdcdcledkit

Available NOW

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Led lighting developer s kit block diagram

LED Lighting Developer’s Kit Block Diagram

Max 50V

30W per string

12V-48V

Why SEPIC DC/DC?

  • Buck/Boost topology

    • SEPIC topology is non inverting

    • Can take an input voltage and raise or lower it

  • Requires only 1 PWM and 1 MOSFET

  • Limited efficiency

  • Low component count

Based on Piccolo F28035 controlCARD

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34


Power stage loop control

Power Stage – Loop Control

Voltage Mode

Avg Current Mode

Peak Current Mode

Constant Power

control

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Adding intelligence to led systems power conversion control communication2

Adding intelligence to LED systemsPower conversionControlCommunication

TI - Lighting Power Products


Lighting solution from ti

  • Control example#1 aging compensation

  • Control example#2 Constant Color Temperature

  • Control example#3 presence sensing

  • Control example#4 Dimming scheduler

  • Control example#5 Metrology with MSP430F4

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Control example 3 presence sensing

Control example#3 presence sensing

DM, video-based Intelligent Occupancy sensing

  • Reliable occupancy sensing and counting

  • And more…

MSP430F2 example code and ref des

  • MSP430 is free 99,975% of time

  • 9,37uA average standby current

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Adding intelligence to led systems power conversion control communication3

Adding intelligence to LED systemsPower conversionControlCommunication

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Communication summary

Communication summary

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Conclusion

Conclusion

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Www ti com led

www.ti.com/led

www.ti.com/mculighting

Reference Designs, Products, White Papers, Articles, Tools, Videos, etc.

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Ucc28810evm 002 003 design tool sneak peek

UCC28810EVM-002 / 003 Design Tool Sneak peek

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Newly available led reference design cookbook slyt349

Newly AvailableLED Reference Design Cookbook (slyt349)

http://focus.ti.com/lit/sg/slyt349/slyt349.pdf

TI - Lighting Power Products

44


Lighting solution from ti

Thank you for attending our webinar! We hope you found it interesting and useful for your projects!

In order to support your work and help you develop your designs, Farnell and Texas Instruments are offering to all attendees:

  • Chance to win one of below FREE Texas Instruments modules!

  • TMDSDCDCLEDKIT (1824821) - worth 349 USD

    • The LED DC/DC Developer's Kit iincluding everything to start developing a digitally controlled LED DC/DC system

  • TPS62260LED-338 + EZ430-RF2500 (1655482+1382267) - worth 49 USD

    • Evaluation module that controls the color and brightness of LEDs with wireless communication functionality

  • UCC28810EVM-002 (1824822) - worth 49 USD

    • Constant current non-isolated power supply evaluation module for LED lighting applications

  • UCC28810EVM-003 (1824823) – worth 49 USD

    • 110W offline AC-to-DC LED current driver module with power factor correction

  • * There will be a draw after the event ends and the winners will be announced by e-mail by July 15th 2010

  • All materials presented during the webinar will be available on element14, on our dedicated group page: Technology Training Webinars.

    Check our technology website and e-community – element14 for product data, design tools and technology information!

    TI - Lighting Power Products


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