ISL6731AFBZ-T

Overview

The ISL6731AFBZ-T is a Power Factor Correction (PFC) controller manufactured by Renesas Electronics Corporation, designed for continuous conduction mode (CCM) applications. It operates within a switching frequency range of 111kHz to 138kHz and features an internal startup current of 106 µA. The device supports a supply voltage range of 15V to 20V and functions reliably across an operating temperature range of -40°C to 125°C. Packaged in a 14-SOIC surface-mount format with a width of 3.90mm, this component integrates essential control logic for efficient power conversion systems.

Feature Summary

• Supports continuous conduction mode (CCM) operation for enhanced power factor correction performance
• Integrated startup circuitry providing defined initial current characteristics
• Wide operating temperature range suitable for demanding industrial environments

Applications

• High-efficiency power factor correction circuits
• Industrial power supply systems
• Server and telecommunications power modules

Procurement Notes

Verify the specific suffix 'AFBZ-T' to confirm the 111kHz-138kHz frequency variant and tape-and-reel packaging configuration. Cross-reference the manufacturer part number against official Renesas documentation to ensure authenticity, as the component status is listed as obsolete. Confirm that the 14-SOIC package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed-frequency CCM PFC solution within the 111kHz-138kHz range is required. Ensure the design accommodates the 15V-20V supply voltage constraint and the thermal management needs for the -40°C to 125°C operating range. Consider the availability of obsolete status and potential long-term supply risks when integrating this controller into new product designs.

Part Context

The ISL6731 series belongs to Renesas' portfolio of power management integrated circuits focused on AC-DC conversion efficiency. This specific model represents a legacy controller optimized for standard PFC topologies. It complements other power stage components in complete power supply solutions, serving as a critical control element for meeting regulatory power quality standards in various electronic equipment.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided data.