iW873

iW873

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.

Features

  • 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

Features

  • 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

Applications

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

Model Available!

Resources

Product Briefs and Summaries

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.

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

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