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
Product Brief
iW3671 Product Summary
PDF 534 KB 简体中文
Datasheet
iW3671 Datasheet
Log in to Download PDF 2.13 MB 简体中文
Brochure
Power Products Brochure
PDF 8.73 MB
Brochure
Industrial Power Management Brochure
PDF 5.49 MB 日本語
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
6 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)
    Buy / Sample
    Part Number
    IW3671-00C
    circleActive
    memory
    view_in_ar
    Samples Available
    		 SOT23-6L Tape & Reel 1 Get Samples,
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product