Rapid Charge™ AC/DC Digital Controller

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Supports Qualcomm® Quick Charge™ 3.0, 2.0 Protocols; companion to the iW636

The iW1780H high performance AC/DC RapidCharge™ power supply controller pairs with Dialog’s iW636 secondary-side IC to provide a simple, low cost, high efficiency solution to support Qualcomm Quick Charge 3.0 and 2.0 protocols.

The iW1780H uses a unique secondary-to-primary digital communication link signal to receive all rapid charge commands from the iW636 via a single optocoupler.

A full array of protection features integrated in the iW1780H include Dialog’s SmartDefender™ advanced hiccup technology to address soft short circuits in charger cables and connectors, helping to prevent excessive heat build-up and damage. Learn more about SmartDefender™ smart hiccup technology here.

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


  • Supports Qualcomm® Quick Charge™ 3.0 and 2.0 Protocols
  • Proprietary Secondary-To-Primary Digital Communication and Built-In Decoder: 
    • Reduces BOM and Significantly Simplifies Design
  • Single Optocoupler for All Rapid Charge Information
  • Low No-Load Power Consumption <10mW
  • High Efficiency up to 90%


  • Fully Protected from Fault Conditions 
  • Output Over-Voltage Protection
  • Over-Current Protection
  • SmartDefender™ Smart Hiccup Technology 
  • Helps Protect Cables and Connectors from Excessive Heat and Damage by Reducing Average Power During Short Circuit by at Least 50%


  • Qualcomm® Quick Charge™ 3.0 or 2.0 Power Adapters
  • Rapid-charging AC/DC Adapters for Smartphones, Tablets, Other Portable Devices (3.6V-12V, 1A-3A)

Block Diagrams

Typical applications diagram
Functional block diagram


Product Briefs and Summaries
Date Version
iW1780H Product Summary 16/09/2016 Rev. 1.0

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