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Rapid Charge™ AC/DC Digital Controller


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.

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

Lifecycle status

● Active


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

To order a sample of any of our products, please complete the following form. We will provide up to five parts free of charge. Our sales department will provide pricing for samples orders exceeding five parts.

Sample Request Form

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Product Briefs and Summaries
Name Date Version
iW1780 Product Summary (492.81 KB) 18/12/2015 1.6
Name Date Version
iW1780 Datasheet (996.99 KB) (Registered users only) 18/12/2015 1.8
Name Date Version
iW626+iW1780 Rapid Charge Chipset Brochure (879.33 KB)
Reference designs
Name Date Version
Reference Design EBC10073: iW1780-04 and iW626-04 5V/1.6A 9V/1.6A 12V/1.2A 85-264VAC Qualcomm® Quick Charge™ Adapter Design (4.21 MB) (Registered users only) 12/01/2016 1.0
Reference Design EBC10074: iW1780-01 & iW626-00 & iW671-00 5V/2A 9V/1.67A 12V/1.25A 85-264VAC Qualcomm® Quick Charge™ High Efficiency (4.12 MB) (Registered users only) 12/01/2016 1.0
Reference Design EBC10105: iW1780-00 and iW626-04 and iW673-00 for a 24W Qualcomm® Quick Charge™ 2.0 Design (4.02 MB) (Registered users only) 23/06/2016 1.0