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iW1796

iW1796

27W Low BOM Cost RapidCharge™ AC/DC Digital Controller with XM-Comm Technology in Small SOT23-6

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Supports Qualcomm® Quick Charge™ 3.0 with No Optocoupler; Companion to iW662 RapidCharge™ + Synchronous Rectifier Controller IC

The iW1796 is a 27W output, high performance AC/DC RapidCharge™ power supply controller that integrates Dialog’s XM-Comm technology, eliminating all optocouplers from travel adapters to reduce cost and improve reliability. The device comes in an SOT23-6 package, reducing the total solution size for space-sensitive travel adapter applications. The device can support Qualcomm Quick Charge 3.0 and 2.0 and other rapid charging protocols.

It is optimized to work with Dialog’s iW662 secondary-side synchronous rectifier controller and rapid charge interface IC. The iW662 IC uses XM-Comm technology to transmit all necessary information via an optocoupler to the iW1796, including voltage requests, output current limits, output voltage undershoot, output over-voltage, and fault and reset signals.

A full array of protection features includes Dialog’s advanced fault control technology to address soft short circuits in charger cables and connectors without latching off the output.

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

Features

  • Output power – 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
  • SOT23-6 Package – Reduces Solution Size
  • High Resolution – 10mV Step Capable up to 21V
    • Ideal for USB PD Programmable Power Supply (PPS) and Other Protocols

Features

  • Ultra-Low No-Load Power Consumption
    • <75mW with Ample Margin at 230VAC
    • <20mW with External Active Start-Up Circuit
  • Robust Protection Features
    • Output Over-Voltage Protection
    • Over-Current Protection
  • Advanced Fault Control Technology
    • Helps Protect Cables and Connectors from Excessive Heat and Damage by Reducing Average Power without Needing a Latch

Applications

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

Block Diagrams

Typical Applications Diagram
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Functional Block Diagram

Resources

Product Briefs and Summaries
Date Version
iW1796 Product Summary 09/03/2020 Rev. 1.1

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