IW3671-01C

Overview

The IW3671-01C is a single-stage high-performance AC/DC primary-side-regulation PWM controller with power factor correction (PFC). Designed for LED lighting applications, it supports output powers up to 100W. The IC is optimized for flyback and boost topologies, offering constant-voltage and constant-current control capabilities.

Feature Summary

• Integrates primary-side regulation to eliminate the need for optocouplers and secondary-side feedback components.
• Provides high power factor and low total harmonic distortion for efficient grid interaction.
• Supports both constant-voltage and constant-current modes for versatile LED driver designs.

Applications

• LED lighting drivers
• Flyback topology power supplies
• Boost topology power supplies

Procurement Notes

Verify current availability status as supply may be limited or subject to factory special orders. Confirm RoHS compliance details through official documentation. Ensure ordering suffixes match specific package requirements such as reel or cut tape formats when sourcing from distributors.

Selection Notes

Select this component for designs requiring integrated PFC and primary-side regulation in single-stage converters. It is suitable for applications needing high efficiency and reduced component count. Evaluate thermal performance and layout constraints associated with flyback or boost implementations for optimal operation.

Part Context

The iW3671 series belongs to Renesas' portfolio of LED lighting driver ICs. These controllers are engineered to simplify AC/DC conversion for illumination systems. The family focuses on delivering high performance with minimal external components, supporting modern energy-efficient lighting standards.

FAQ

What topologies does the IW3671-01C support?

It is designed for flyback and boost (step-up) topologies.

Does the device require secondary-side feedback?

No, it utilizes primary-side regulation, eliminating the need for optocouplers.