The iW3630 offers an output power up to 45W, high power factor (PF) >0.95, total harmonic distortion <15%, and a small BOM to address performance, cost and reliability issues in high-performance, dimmable commercial solid-state lighting applications.

The iW3630 features a built-in isolation transformer driver that enables direct, 0-10V dimming without the need for an additional driver circuit and microcontroller. It also incorporates Renesas' proprietary PrimAccurate™ primary-side control technology, further reducing the BOM count by eliminating the need for an optocoupler and external compensation components.

Incorporating Renesas' proprietary Flickerless™ technology, the iW3630 allows for full 1% to 100% flickerless dimming using either a direct analog voltage or a PWM signal. It is feature-rich to ease design and provide a very robust solution, integrating Renesas' EZ-EMI® technology and several protection features, including LED over-temperature protection.


  • High PF (>0.95) and Low THD (<15%)
  • PrimAccurate™ - Isolated Off-Line AC/DC Controller
  • Integrates Renesas' Flickerless™ Technology
    • Removes Virtually All LED Flicker
  • LED Applications up to 45W Off-Line Solid-State Lighting Applications
  • 45Hz to 66Hz Line Frequency Range - 50Hz/60Hz Compatible
  • Analog and PWM Dimming Compatibility
    • Direct Analog Control - 1% to 100% Range
    • PWM Dimming Capable
    • Integrated Isolation Transformer Driver for 0-10V Dimming Systems
  • Quasi-resonant Mode for Optimal Efficiency
  • Fully Protected
    • Works from DC Voltage Emergency Back Up System
    • Over-Temperature Protection
    • Overvoltage Protection
    • Output Overvoltage, Overcurrent and Short Circuit
    • Open LED Fault Detection
    • Sense-Resistor Short Circuit Protection




  • Dimmable LED Ballasts with 0-10V Interface for Dimming Control
  • Dimmable LED Ballasts with Analog Input for Dimming Control


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Product Brief PDF 605 KB
White Paper PDF 807 KB
White Paper PDF 843 KB
White Paper PDF 597 KB
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Design & Development