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iW873

Secondary-Side Synchronous Rectifier Controller with Integrated 60V MOSFET

iw873_typical_applications_diagram.jpg

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

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!

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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.

Download

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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Product Briefs and Summaries
Name Date Version
iW873 Product Summary (349.49 KB) 02/06/2016 1.0
Datasheets
Name Date Version
iW873 Datasheet (601.55 KB) (Registered users only) 02/06/2016 1.0
DiaSIM Simulation Tools
Name Date Version
iW873-00 DiaSIM™ Model (98.03 KB) (Registered users only) 10/12/2018 2.0
NL5 Quick Start Guide (4.04 MB) 16/09/2016 1.0