Area and Street Lighting (25-250W)

Texas Instruments is the market leader in power management. Our extensive portfolio includes a broad selection of products ideally suited for the demanding challenges of indoor/outdoor area and street lighting.

  • AC/DC
    • PFC controllers for buck and boost topologies for single phase and parallel interleaved schemes.
    • PWM controllers support all common isolated power topologies including single-ended (flyback, forward, active clamp) to double-ended (half-bridge, phase-shifted full-bridge, push-pull and LLC half-bridge) topologies.
  • DC/DC
    • Buck, boost, buck-boost, SEPIC, flyback and linear current regulating DC LED drivers not only enable highly efficient power conversion with options for analog and PWM dimming capability, but can include advanced features such as:
      • LED string headroom monitoring
      • Thermal foldback
      • LED fault detection/protection.
  • MCU
    • MSP430 16-bit, ultra-low power consumption microcontroller line well suited for basic sensing, control and communications in 'intelligent' lighting designs.
    • C2000 32-bit facilitate the creation of all 'digital' lighting solutions with the ability to perform power management, sensing, control and communications in a single MCU.
    • Stellaris ARM CortexTM M3 products further enhance lighting communications capability with integrated Ethernet MAC and PHY capability.

  • Power: 20 ~ 100W (Flyback, PFC Boost + Flyback)
  • Power: 75 ~ 250W (PFC Boost + LLC (Constant Voltage) + Buck LED String Regulators, PFC Boost + LLC (Constant Current))
  • LM3464: LED Driver with Dynamic Headroom Control and Thermal Control Interfaces (Constant Voltage)
  • LM3466: Smart Linear LED Driver for Multi-Channel LED Systems (Constant Current)
  • VIN > VLED (Linear, Buck, Inverted-Buck)
  • VIN < VLED (Boost)



Typical AC/DC LED Driver Topologies

Power: 20 ~ 100W

Flyback

Flyback


  Input Voltage Dimmable PFC (>0.9)
110V 220V
LM3450 Yes Yes Integrated Phase Dimming Decode Yes
TPS92210 Yes Yes External Yes
UCC28810 Yes Yes External Yes

PFC Boost + Flyback

PFC Boost + Flyback


  Input Voltage Dimmable Topology PFC (>0.9)
110V 220V
LM3450 Yes Yes Integrated Phase Dimming Decode Flyback Yes
TPS92210 Yes Yes External Flyback Yes
UCC28810 Yes Yes External Boost/Flyback Yes
TPS92010 Yes Yes External Flyback Yes

 

Power: 75 ~ 250W

PFC Boost + LLC (Constant Voltage) + Buck LED String Regulators

PFC Boost + LLC (Constant Voltage) + Buck LED String Regulators


  Part Number Topology Max LED Current (mA) Input Voltage Range (V) Maximum Output Voltage (V)
Converters LM3414/HV Inverted Buck 1000 4.5 to 42/ 80 / 95
4.5 to 65
LM3402/HV Buck 500 6.0 to 42 / 40 / 70
6.0 to 75
LM3404/HV Buck 1000 6.0 to 42 / 40 / 70
6.0 to 75
LM3406/HV Buck 1500 6.0 to 42/ 40 / 70
6.0 to 75
Controllers LM3421/23/24/29 Buck, Boost, Buck-Boost, SEPIC >2000 4.5 to 75 75
LM3409/HV Inverted Buck 5000 6.0 to 42 / 42 / 75
6.0 to 75

 

PFC Boost + LLC (Constant Current)

PFC Boost + LLC (Constant Current)


  Input Voltage Dimmable Topology PFC (>0.9)
110V 220V
UCC28810/
UCC28811		 Yes Yes n/a PFC Boost Yes
TPS92020 Yes Yes PWM w/external components LLC n/a

 

Solutions for Use with Off-the-Shelf AC/DC Constant Voltage Power Supplies


AC/DC Power Supply (Constant Voltage)

VIN > VLED

V > n x Vf

Linear Buck Inverted Buck
  Advantages Disadvantages
Linear
  • Best efficiency if V slightly > n x Vf 
  • Low component count
Buck
  • Best efficiency if V >> n x Vf
  • Add component count compared to linear
  • Switching noise
Inverted Buck
  • Best efficiency if V >> n x Vf
  • No boot capacitor required
  • Add component count compared to linear
  • Switching noise

VIN < VLED

V >n x Vf

  Advantages Disadvantages
Boost
  • Only option if V < n x Vf
  • Lower system efficiency (step down followed by step up
Boost

V = AC/DC supply voltage
n = number of LEDs
Vf = forward voltage per LED in the string



"Special Feature" Products

LM3464: LED Driver with Dynamic Headroom Control and Thermal Control Interfaces


LM3464: LED Driver with Dynamic Headroom Control and Thermal Control Interfaces

High Current, Multi-String LED Driver Selection Table

LED Driver LED Voltage Dim No. Channels FET DHC
LM3464 12-60V Analog/PWM 4 External Yes
LM3464A 12-95V Analog/PWM 4 External Yes
TLC5960 0-34V Analog/PWM 8 External Yes

DHC = Dynamic Headroom Control


Highlights:


LM3466: Smart Linear LED Driver for Multi-Channel LED Systems

LM3466: Smart Linear LED Driver for Multi-Channel LED Systems


Highlights:

  • Easy to use
  • Works with a constant current power supply with no feedback necessary
  • Requires only a few external components
  • Automatically equalizes the current through every active LED string
  • Provides robust fault protection and reporting
  • Maintains near constant output brightness if a string opens (inactive) by re-equalizing the current through the remaining active LED strings
  • Delivers thermal and under-voltage protection
  • Offers fault status output
  • Operates with minimum voltage overhead to maximize power efficiency (up to 99%)
  • Linear circuitry does not deteriorate system EMI
  • Supports operating voltages from 6V to 70V
  • Supports LED currents up to 1.5A
  • LM3466 product folder
  • LM3466 demo video

LED Driver LED Voltage LED Current (MAX) No. Channels
LM3466 6-70V 1.5A 1


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