Secondary-Side Synchronous Rectifier Controller with Integrated 60V MOSFET

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Fully Integrated Secondary-Side Rectification Circuit Simplifies Design and Improves Efficiency

The iW873 secondary-side synchronous rectification solution works with several of Dialog’s primary-side controllers to deliver the high efficiency needed for high power density smartphone and tablet power adapters.

The iW873 integrates a 60V power MOSFET with Dialog’s proprietary digital adaptive turn-off control technology to replace the secondary-side Schottky diode with a MOSFET for higher power density adapters.  It also uses adaptive control to minimize dead-time, eliminating the need for a parallel Schottky diode required by conventional synchronous rectifier solutions.

A DiaSIM simulation model is available for the iW673. For more information and where to download, please visit the DiaSIM page.


  • Integrated 60V MOSFET for Synchronous Rectification

  • Adaptive Control Minimizes Dead Time

    • Eliminates Parallel Schottky Diode

    • Higher Efficiency, Lower BOM Cost

  • Ultra-Fast Dynamic Load Response

    • Integrated Adaptive Voltage Position Monitor


  • Ultra-Low No-Load Operating Current < 0.65mA

  • Wide Input Voltage Range up to 25V

  • Up to 15W Output Power

  • Integrated, Pulse Linear Regulator Allows Operation Down to 2.4V Output Voltage

  • Supports 3.6V to 12V AC/DC Adapters


  • Compact AC/DC adapters/chargers for smartphones, tablets

Model Available!


Product Briefs and Summaries
Date Version
iW873 Product Summary 02/06/2016 Rev. 1.0

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.


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

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