Rapid Charge™ AC/DC Digital Controller

A team of engineers is ready to answer your questions

Simple, Low-Cost Qualcomm Quick Charge 2.0 Compatible Solution; companion to the iW626

The iW1780 Rapid Charge™ AC/DC controller works with the iW626 secondary-side IC to provide a simple, low-cost Qualcomm® Quick Charge™ 2.0 adapter solution, while achieving efficiency as high as 88% to enable the high power density needed for small form-factor fast-charging smartphone and mobile device adapters.

It uses a unique secondary-to-primary digital communication link signal to receive all rapid charge commands from the iW626 through a single opto-coupler in the iW626.

The iW1780 also incorporates Dialog’s SmartDefender™ smart 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.


  • Unique Secondary-to-Primary Digital Communication Link Signal for Qualcomm® Quick Charge™ 2.0 Adapter Applications
    • iW626 and iW1780 Communicate via Proprietary Opto-Coupled Communication Link
  • Meets DoE External Power Supply Regulation and EU CoC Version 5, Tier 2
    • <10mW No-Load Power Consumption
  • Fast Dynamic Load Response
  • Active Start-Up Reduces Start-Up Time without Increasing No-Load Power Consumption


  • Selectable Voltage Offset Compensation for Voltage Loss in Cables and Connectors (5 Options)
    • Selectable via Single Resistor
  • Fully Protected from Fault Conditions
    • Output Over-Voltage Protection
    • Over-Current Protection
  • SmartDefender™ Smart Hiccup Technology
    • Helps Address Soft-Shorts in Cables, Connectors without Latching Off
    • Helps Protect Cables and Connectors from Excessive Heat and Damage by Reducing Average Power During Short Circuit by at Least 50%


  • Rapid Charge power adapters for mobile electronics
  • Qualcomm® Quick Charge™ 2.0 technology HVDCP Class A (5V, 9V, 12V) adapters

Block Diagrams

Typical applications diagram
Functional block diagram


Product Briefs and Summaries
Date Version
iW1780 Product Summary 18/12/2015 Rev. 1.6
Date Version
iW626+iW1780 Rapid Charge Chipset Brochure

For technical support or information on how to buy, contact us directly.

Request Samples Contact Us Register for newsletter

Need technical help?

Visit our support web site to:

  • Get help from Dialog experts online.
  • Search the forums.
  • Access software, drivers, tools & utilities.