30W AC/DC Off-Line Controller for Power Adapters Offers Lower Output Ripple, Wider Input Voltage vs iW1699

A team of engineers is ready to answer your questions

1% output ripple, small solution size

The iW1699B improves on the performance of Dialog’s iW1699 AC/DC controller by reducing the output voltage ripple to 1% on a 12V output voltage, increasing the Vcc input voltage range up to 25V, and increasing robustness with extra protection features.

The iW1699B easily meets the US DoE’s external power supply efficiency standard and the EU’s Code of Conduct, version 5, tier 2 external power supply standard, with no-load power consumption less than 30mW while complying with minimum active mode efficiency requirements.

The iW1699B also incorporates Dialog’s SmartDefender™ smart hiccup technology to help address soft short circuits in cables and connectors. Learn more about SmartDefender advanced hiccup technology here.

The iW1699B is pin-to-pin and backward compatible with the iW1699.

A DiaSIM simulation model is available for the iW1699B. For more information and where to download, please visit the DiaSIM page.


  • Low output ripple voltage – 120mV on a 12V or 5V output voltage
  • 25V max Vcc Input Voltage Range
  • Easily Meets DoE External Power Supply and EU CoC Version 5, Tier 2 Standards
    • Less than 30mW No-Load Power Consumption
  • 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 to Ground
  • PrimAccurateTM- Primary-Side Control, No Optocoupler Needed
  • Intrinsically Low Noise Solution - No Audible Noise Over Entire Operating Range
  • Adaptive Multi-Mode PWM/PFM Control for Optimal Efficiency Across Load Range


  • EZ-EMITM Design to Easily Meet Global EMI Specifications
  • Fast Dynamic Load Response (DLR)
  • 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-Voltage/Over-Temperature Protection (latch option)
    • On-Chip Internal Over-Temperature Protection
    • Output Over-Voltage and Over-Current Protection
    • Input Undervoltage Protection
    • Sense-Resistor Short Circuit Protection
    • Bulk Input Capacitor Discharge Circuit
  • Pin-to-pin and backward compatible with iW1699


  • Compact power adapters for smartphones, tablets
  • AC/DC adapters for consumer electronics

Model Available!

Block Diagrams

Typical Applications Diagram
Functional Block Diagram


Product Briefs and Summaries
Date Version
iW1699B Product Summary 06/12/2017 Rev. 1.7

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

Request Samples Contact Us Register for newsletter

Dialog’s DiaSIM simulation models and tools enable simulation and validation of AC/DC power supplies using highly accurate models for selected products. All models and application circuits are available for download from the support website.


Need technical help?

Visit our support web site to:

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