AC-DC Power Factor Corrected 3 Step Dimmable Quasi-Resonant Primary Side Current Mode Controller for LED Lighting

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Overview

The NCL30085 is an AC-DC power factor corrected flyback controller targeting isolated and non−isolated buck-boost/SEPIC constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal efficiency. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This controller has integrated 3 step log dimming which allows an LED bulb or luminaire to be dimming from a standard wall switch.In addition to steps of 70% and 25% which are similar to a traditional 3 way lamp, one additional step of 5% current is included to support deep dimming applications.

  • Integrated LED Driver Electronics
  • LED Bulbs
  • LED Driver Power Supplies
  • LED Light Engines
  • LED Tubes
  • Electronic Control Gear for LED Systems
  • Constant Current Control with Primary Side Feedback
  • Precise Current Regulation Accuracy
  • Power Factor Correction with low harmonic distortion
  • 3 dimmable steps of 70%, 25%, and 5% of full current
  • Line Feedforward for Enhanced Regulation Accuracy
  • Wide Vcc operating range
  • User Programmable Thermal Foldback
  • Output LED open and short protection
  • Secondary Diode Short Protection
  • VCC undervoltage and overvoltage protection
  • Wide Temperature range of -40 to 125 °C
  • Auto-recoverable (B-version) and Latched (A-version) fault handling options

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NCL30085BDR2G

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A

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SOIC-8

3

260

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2500

N

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9.4

26

200

3000

Up to 150

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