ISL6730AFUZ

Overview

The ISL6730AFUZ is a voltage mode power factor correction (PFC) controller IC manufactured by Renesas Electronics Corporation. It utilizes a boost topology and operates in Continuous Conduction Mode (CCM). The device features an internally clamped 12.5V gate driver capable of delivering 1.5A peak current to external power MOSFETs. It incorporates negative capacitance technology to minimize zero-crossing distortion and reduce magnetic component size. Protection mechanisms include cycle-by-cycle overcurrent, over-power limit, over-temperature, input brownout, output overvoltage, and undervoltage protection.

Feature Summary

• Utilizes patent-pending negative capacitance technology to minimize zero-crossing distortion and reduce magnetic component size.
• Features an internally clamped 12.5V gate driver delivering 1.5A peak current for external power MOSFETs.
• Provides comprehensive system protection including cycle-by-cycle overcurrent, over-power limit, and thermal shutdown.
• Supports accurate input current shaping via a dedicated current error amplifier.

Applications

• Desktop computer AC/DC adaptors
• Laptop computer AC/DC adaptors
• TV AC/DC power supplies
• AC/DC brick converters

Procurement Notes

Verify the specific suffix 'AFUZ' against official Renesas documentation to confirm package type and switching frequency options. Ensure compatibility with existing design constraints regarding the MSOP package dimensions and lead count. Confirm availability status as distribution data may indicate obsolete or limited stock conditions for this specific variant.

Selection Notes

Select the ISL6730AFUZ for designs requiring CCM PFC control with integrated skip mode functionality for improved light-load efficiency. Consider the fixed skip threshold characteristic associated with the 'A' variant. Evaluate the 14-pin SOIC or MSOP package suitability based on board space requirements. Ensure the application operates within the specified universal line input range and temperature parameters.

Part Context

The ISL6730 series includes variants A, B, C, and D, all sharing the same core boost topology controller architecture. Variants differ primarily in switching frequency options and skip mode implementation. The ISL6730A and ISL6730B feature fixed skip thresholds for enhanced light-load efficiency, while C and D variants do not support skip mode. This family is designed for cost-effective AC/DC power systems up to 2kW.

Replacement Considerations

Direct substitutes include other ISL6730 series variants such as ISL6730BFUZ or ISL6730CFUZ, depending on required skip mode functionality and switching frequency. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.