The iW1790 is a 27W output, high-performance AC/DC RapidCharge™ power supply controller that integrates Renesas' XM-Comm technology, removing all optocouplers from travel adapters to reduce cost and improve reliability. The device also uses advanced source charging technology to integrate additional high voltage components, further reducing the overall BOM cost in travel adapter applications. The device supports Qualcomm Quick Charge 3.0 and 2.0 along with other rapid charging protocols.

It is optimized to work with the iW662 secondary-side device, which integrates a RapidCharge interface IC and a synchronous rectifier controller. The iW662 uses Renesas' XM-Comm technology to transmit all necessary information to the iW1790, including voltage requests, output current limits, output voltage undershoot, output overvoltage, and fault and reset signals.

A full array of protection features includes Renesas' SmartDefender™ advanced hiccup technology to address soft short circuits in charger cables and connectors, helping to prevent excessive heat build-up and damage.

Qualcomm® Quick Charge™ is a product of Qualcomm Technologies, Inc.


  • Output Power up to 27W
  • Optimized to Work with iW662 to Support Multiple RapidCharge Protocols:
    • Qualcomm® Quick Charge™ 3.0
    • Qualcomm® Quick Charge™ 2.0
  • XM-Comm Proprietary Secondary-to-Primary Digital Communication via Power Transformer:
    • Reduces BOM and Significantly Simplifies Design
    • Handles All Rapid Charging Information
  • Vcc Source Charging Technology – Reduces BOM and Keeps High Efficiency
    • Eliminates External Start-up Device
    • High Efficiency up to 90%
    • Low No-Load Power Consumption <20mW
    • Robust Protection Features
      • Output Overvoltage Protection
      • Overcurrent Protection
  • SmartDefender™ Advanced Hiccup Technology Helps Protect Cables and Connectors from Excessive Heat and Damage by Reducing Average Power During Short Circuit by at Least 75%




  • RapidCharge™ AC/DC Power Adapters for Smartphones, Tablets and Other Mobile Devices Equipped with Qualcomm Quick Charge 3.0, Qualcomm Quick Charge 2.0 and other Protocols


Type Title Date
Product Brief PDF 540 KB
Brochure PDF 8.73 MB
Brochure PDF 5.49 MB 日本語
Datasheet Log in to Download PDF 983 KB
Other Log in to Download ZIP 3.13 MB
Other Log in to Download ZIP 3.70 MB
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Design & Development