iW1788

iW1788

36W High Power MediaTek Pump Express™ Plus-Compatible Digital PWM AC/DC Controller

Not Recommended for New Designs

A team of engineers is ready to answer your questions

Not Recommended for New Designs

High efficiency for small form factor adapters

The iW1788 is a highly integrated AC/DC off-line power supply controller designed to be compatible with MediaTek’s Pump Express™ Plus fast charge protocol for smartphones and tablets.  The iW1788 is a single-chip solution for output power up to 36W that uses Dialog’s intelligent Rapid Charge™ digital algorithm and digital PrimAccurate™ primary-side control to significantly reduce charge times in USB AC/DC power adapters.

The iW1788 is highly efficient, and offers no-load standby power < 30mW, meeting the US Department of Energy’s external power supply efficiency requirements and Version 5, Tier 2 of the EU’s Code of Conduct for external power supplies.  The iW1788 also offers a full array of protection features including overvoltage, short circuit and over-temperature protection.

MediaTek’s Pump Express Plus protocol enables up to 45% faster charging times (compared to conventional chargers) for smartphones and media tablets.  The iW1788 uses Dialog’s intelligent Rapid Charge™ technology, enabling adapters that can scale the output voltage from 3.6V to 12V to optimize charging times for high capacity batteries.

The iW1788 also incorporates Dialog's SmartDefender™ smart hiccup technology to help address soft short circuits in cables and connectors.  Learn more about SmartDefender smart hiccup technology here. 

For 5.0W – 7.5W output power MediaTek Pump Express-compatible controller, see iW1680. 

Features

  • Supports MediaTek Pump Express™ Plus fast charge protocol
  • 24W PrimAccurate™ isolated off-line controller
    • Eliminates secondary-side regulator and optical feedback isolator
  • Built-in digital intelligence on primary side for intelligent dynamic voltage scaling to optimize charge time
  • Meets DoE External Power Supply and EU Code of Conduct Version 5, Tier 2 standards
    • < 30mW no-load power consumption
  • Adaptive Multi-Mode PWM/PFM control improves efficiency
  • No audible noise over the entire operating range
  • Active start-up scheme enables fastest possible start-up

Features

  • Cable drop compensation – configurable
  • Low EMI design
  • No external compensation needed
  • 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%
  • Fully protected from fault conditions
    • Over-temperature protection
    • Output short circuit
    • Output low impedance
    • Output overvoltage

Applications

  • Compact AC/DC power supplies and power adapters for portable electronics
  • Rapid Charge™ enabled adapters for smartphones
  • Linear AC/DC replacement

Block Diagrams

Typical Applications Diagram
,
Functional Block Diagram

Resources

Product Briefs and Summaries
Date Version
iW1788 Product Summary 24/02/2016 Rev. 1.1

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.