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TRIAC Dimmable Ac-Dc LED Drivers VLED 15 Series - PowerPoint PPT Presentation


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TRIAC Dimmable Ac-Dc LED Drivers VLED 15 Series. Introduction. Purpose To provide an overview of the VLED15 Ac-Dc LED power supply and its advantages Objectives Identify the market opportunity for LEDs Discuss why TRIAC dimming is important

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Presentation Transcript
slide2

Introduction

  • Purpose
  • To provide an overview of the VLED15 Ac-Dc LED power supply and its advantages
  • Objectives
  • Identify the market opportunity for LEDs
  • Discuss why TRIAC dimming is important
  • Describe the key specifications of the VLED15 Series

Content: 11 pages

Learning Time: 7 minutes

slide3

LED Market Opportunity

  • Increased global government regulations to improve lighting efficiency levels
  • US Federal Regulations requiring efficiency levels significantly higher than current incandescent bulbs
  • Declining pricing for LED lamps
slide4

Applications for LED Lighting

  • Residential Lighting
    • Accent lighting
    • Downlights
    • Cabinet lighting
    • Pendant lighting
  • Commercial Lighting
    • Fluorescent lamp replacement
    • Downlights
    • Showcase lights
slide5

Driving LEDs

  • Simple two terminal devices
  • Constant current
  • Typically driven in series
  • Must consider how to dim
slide6

Typical Existing Installations

TRIAC Dimmer

TRIAC Dimmer

VLED15

slide7

TRIAC Dimming

  • Leading edge, phase cut dimmers
  • Reduces the amount of energy delivered to the light source
  • Most TRIAC dimmers have a minimum load required to operate properly
slide8

Challenges for High Bright LEDs

  • LEDs are driven differently than incandescent lamps
  • Light output is managed by controlling the forward current going through the LEDs
  • LED lamps don’t act as purely resistive loads
  • Standard switch mode power supplies have regulated outputs
  • Minimum loading must be considered when used with TRIACs
slide9

LED Lighting Power Needs

  • Dimming capable
  • Backward compatible
  • Simple to use
  • Inexpensive
slide10

VLED15 Series Truly TRIAC Dimmable

  • Integrated TRIAC dimming support
  • Operates with industry standard dimmers
slide11

VLED15 Models

Output Voltage

(Vdc)

OutputCurrent(mA)

Part Number

Min

Max

  • Ac-dc operation eliminating the need for dc-dc constant current LED drivers
  • Constant current
  • Active power factor correction
  • Up to 1500 mA
  • 120 and 230 Vac inputs supported
slide12

Summary

  • The potential for LEDs in replacing incandescent lamps is enormous
  • Being able to transparently interface with existing TRIAC dimmer installations will accelerate adoption
  • CUI’s VLED15 series offers a truly TRIAC-dimmable solution