Overview

Description

The iW3623 is a high-performance, two-stage, non-dimmable 45W Solid-State Lighting (SSL) LED driver that integrates boost and flyback converters into a single IC to reduce BOM cost and simplify design versus conventional two-stage driver approaches. Compliant to the IEC 61000-3-2 standard, the iW3623 offers a Power Factor (PF) of >0.95 from a universal input voltage of 100VAC to 277VAC, with Total Harmonic Distortion (THD) <10% and low output ripple <5% over the entire range.

The iW3623 incorporates Renesas' proprietary PrimAccurate™ primary-side control technology, eliminating the need for a secondary-side regulator and optical feedback isolator. It also allows FETs to be replaced with lower cost bipolar junction transistors (BJTs) and uses quasi-resonant mode switching for both the boost and flyback stages and dynamic base current to optimize conversion efficiency and minimize EMI.

Protection features include an on-board, external NTC-based temperature protection circuit that reduces the output drive to the LEDs to protect the circuit from overheating while maintaining light output.

Features

  • High PF (>0.95) and Low THD (< 10%)
  • Low Output Ripple Current (<5%)
  • PrimAccurate™ - Isolated Offline AC/DC Controller
  • 45W LED Driver for Non-Dimmable Commercial Solid-State Lighting Applications
  • Flickerless™ Technology
    • Removes Virtually All LED Flicker
  • Resonant Mode for Optimal Efficiency
  • Fully Protected
    • NTC-based Temperature Derating Circuit
    • Overvoltage/Over-Temperature Protection
    • Output Overvoltage, Overcurrent and Short Circuit
    • Open LED Fault Detection
    • Sense-Resistor Short Circuit Protection
    • Single-Fault Protection

Comparison

Applications

Applications

  • Non-Dimmable LED Lamps and Luminaires
  • Optimized for up to 45W Output Power

Documentation

Type Title Date
Product Brief PDF 612 KB
White Paper PDF 1.94 MB
White Paper PDF 843 KB
White Paper PDF 597 KB
4 items

Design & Development

Models