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


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. 

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

A DiaSIM simulation model (32-bit NL5 version only) is available for the iW1699B. For more information and where to download, please visit the DiaSIM page.

Lifecycle status

● Active


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

DiaSIM logo

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.

Important note: Dialog's DiaSIM models are only compatible with the 32-bit version of NL5.


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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Important note: Dialog's DiaSIM models are only compatible with the 32-bit version of NL5.

Product Briefs and Summaries
Name Date Version
iW1699B Product Summary (456.08 KB) 06/12/2017 1.7
Name Date Version
iW1699B Datasheet (1.08 MB) (Registered users only) 06/12/2017 1.8
DiaSIM Simulation Tools
Name Date Version
iW1699B-03 DiaSIM™ Model (321.34 KB) (Registered users only) 12/12/2018 1.0
NL5 Quick Start Guide (4.13 MB)
Reference designs
Name Date Version
Reference Design EBC10075: iW1699B and iW671 for Universal Input, 5V/3A Output Small Size Charger Design (2.52 MB) (Registered users only) 18/11/2015 1.0
Reference Design EBC10104: iW1699B-05 and iW673-00 for 5V/2.4A Adapter Design (2.44 MB) (Registered users only) 23/06/2016 1.0
White Papers & Technical Articles
Name Date Version
White Paper : International External Power Supply Regulations (219.09 KB) (Registered users only) 01/09/2014 A