Renesas Electronics Corporation
Search

iW3627

Active

Digital Constant-Voltage Offline PWM Controller with Power Factor Correction for 100W+ Applications

Order Now

Overview

The iW3627 is a digital offline PWM controller that provides a constant voltage for smart LED lighting applications and general-purpose power supplies up to 90W with power factor (PF >0.9) and low THD (<20%). It supports the most common single-stage isolated and non-isolated topologies (buck, buck-boost, or flyback) as a front-end or standalone power supply in solid-state lighting (SSL) applications with advanced digital control technology.

The iW3627 is compatible with Transphorm GaN technology and is ideal for applications requiring high efficiency and power factor correction (PFC).

iW3627 Functional Block Diagram
iW3627 Typical Applications Diagram
iW3627 Functional Block Diagram
iW3627 Typical Applications Diagram
  • 100W+ output power with enhanced internal MOSFET driver
  • Supports isolated or non-isolated topologies including flyback, buck, or buck-boost
  • High PF (>0.9) and low THD (<20%)
  • Adaptive output voltage transient detection
    • Enables fast transient response with variation < ±10% of nominal output voltage
  • Accommodates large capacitance variations and capacitor aging configurable minimum switching frequency
    • Enables low no-load standby power consumption (<200mW)
  • Configurable PWM maximum switching frequency
    • Optimizes for high efficiency, small size
  • Active start-up – Reduces turn-on time without increasing standby power
  • Tiny 6-pin SOT-23 package
  • Fully protected
    • Input brown-out protection
    • Over-temperature protection
    • Output overvoltage, overcurrent, and overload protection

Design & Development

ECAD Models

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

Explore ECAD Models
Diagram of ECAD Models

Product Options

Applied Filters:

Support

Support Communities

Support Communities

Get quick technical support online from Renesas Engineering Community technical staff.
Get Support
Browse FAQs

FAQs

Browse our knowledge base of common questions and answers.
Browse FAQs
Submit a Ticket

Submit a Ticket

Need to ask a technical question or share confidential information?
Submit Ticket

Support Communities

  1. Body Marking - IW3627-00

    Dear Renesas Team, We are making use of the part #IW3627-00 for the production, There is no body marking details available in the Datasheet, please help us to clarify the part  we received the part with 2 different body marking previous lot and present lot, We are unable ...

    Nov 9, 2024
  2. IW3627 iTHD(%) issue at 32 W

    Hi, We are encountering an iTHD issue in our product. Specifically, at 32W power and 230 Vac, Over time, at certain instances, it reaches 22-26% and it is repeating continuously in the long run. We have verified the resistance and capacitances values for FB (Pin 2) and CS (Pin ...

    Feb 5, 2025
  3. Spice model for iW3627

    Want to simulate board circuit using iW3627 chip . Need spice model for iW3627 chip .

    Jan 3, 2025
View All Results from Support Communities (5)