IW662-18-SO8

Power Supply Controllers, Monitors Overview

The IW662-18-SO8 is an integrated secondary-side synchronous rectifier controller and RapidCharge interface IC designed for AC/DC power supplies supporting Qualcomm Quick Charge 3.0 and 2.0 protocols. It utilizes Renesas' XM-Comm technology to enable digital communication between the secondary side and primary-side controllers (such as iW1790, iW1796, or iW1798) via the power transformer, eliminating the need for optocouplers. The device incorporates a synchronous rectifier controller with adaptive off-time control to minimize transition losses without requiring parallel Schottky diodes. It features high-voltage drain sensing up to 100V and lossless MOSFET VDS sensing for precise timing control.

Power Supply Controllers, Monitors Feature Summary

• Integrates RapidCharge interface and synchronous rectifier controller in a single IC
• Enables secondary-to-primary digital communication via power transformer using XM-Comm technology
• Supports multiple RapidCharge protocols including Qualcomm Quick Charge 3.0 and 2.0
• Provides double-layer cable protection with secondary-side D+/D- overvoltage protection

Power Supply Controllers, Monitors Applications

• Qualcomm Quick Charge 3.0 travel adapters
• Qualcomm Quick Charge 2.0 travel adapters
• Reduced form factor AC/DC power supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix matches the required pinout and thermal characteristics for your PCB layout. Confirm compatibility with the intended primary-side controller from the iW179x series to ensure proper XM-Comm protocol handshake. Check for updated revision levels that may affect fault handling thresholds or temperature sensing calibration. Ensure the SO-8 package dimensions align with your assembly capabilities.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing compact chargers that require elimination of optocouplers to reduce bill of materials cost and improve reliability. It is suitable for applications needing support for both QC 3.0 and QC 2.0 standards within a single integrated solution. Consider pairing it with compatible primary-side controllers like the iW1790 to leverage advanced fault control technologies for cable soft-short detection.

Power Supply Controllers, Monitors Part Context

The iW662 series belongs to Renesas' portfolio of power management ICs focused on efficient AC/DC conversion. It is part of a chipset ecosystem that includes primary-side controllers to create complete fast-charging solutions. The integration of synchronous rectification and communication interfaces addresses the industry trend toward smaller, more efficient wall adapters.

Power Supply Controllers, Monitors Replacement Considerations

Direct replacements are limited due to the proprietary XM-Comm interface. Evaluate other iW662 variants if different packaging or temperature grades are needed. Primary-side controller compatibility must be verified before substituting with other secondary-side controllers.