Overview

The iW3671 front-end flyback power factor correction device provides high power factor (PF >0.9) and low THD (<20%) down to 33% load current using Renesas' PF-Boost™ technology. The device can be configured in both isolated and non-isolated configurations, as a buck, buck-boost, or flyback converter, and consumes less than 150mW no-load standby power at 230VAC.

The iW3671 integrates a full range of protection features including output overvoltage, over-power, input overvoltage and undervoltage, overcurrent and sense resistor short circuit protection, open loop, and over-temperature protection.

For an integrated high-voltage startup option, see the iW3677.

iW3671 Functional Block Diagram
iW3671 Typical Applications Diagram
iW3671 Functional Block Diagram
iW3671 Typical Applications Diagram
  • 100W Offline Controller Supports Isolated and Non-isolated Flyback, Buck and Buck-Boost
  • PF >0.9 and THD <20% Across Input Voltage at Output Power >33%
    • THD <10% at Full Load, Across the Input Voltage Range
  • Supports Wide AC Input Voltage – 90VAC to 305VAC with Tight AC Load and Line Regulation (±3%)
  • Fast PFC Ready Time <0.2s
  • Standby Power - <150mW at Input Voltage of 230VAC
  • Fully Protected
    • Output Overvoltage, Over-Power, Overcurrent, Sense-Resistor Short Protections
    • Input Voltage Undervoltage and Overvoltage Protection
    • Built-In Over-Temperature Protection
    • Open Loop Protection

Applications

  • Commercial Lighting:
    • External Fixture Drivers

Documentation

= Featured Documentation
Type Title Date
Datasheet
iW3671 Datasheet
Log in to Download PDF 2.13 MB 简体中文
Product Brief
iW3671 Product Summary
PDF 534 KB 简体中文
Other
Reference Design EBC20071: iW3671-00, iW380-00, iW350-30, 36V/0.8A, 0-10V Dimmable SSL LED Driver Design
Log in to Download ZIP 6.12 MB
Other
Reference Design EBC20075: iW3671-00, iW380-20, iW350-30, 36V/800mA, 0-10V Dimmable LED Driver Design
Log in to Download ZIP 6.04 MB
4 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
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    Part Number
    IW3671-00C
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    Samples Available
    		 SOT23-6L Tape & Reel 1 Get Samples,
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