Skip to main content

iW676

Digital Synchronous Rectifier Replaces Schottky Diode for Ultra-High Power Density AC/DC Power Adapters, Including RapidCharge™

iw1799_iw657p_typical_applications_diagram_-_web_v1_3.jpg

Optimized for Lowest BOM Cost in Applications up to 12V and Direct Charging Down to 3V

The iW676 digital synchronous rectifier can be used with several of Dialog's primary-side controllers to deliver to deliver the high efficiency needed for high power density, low BOM cost adapters for smartphones and media tablets, including RapidCharge™ and direct charge applications.

The iW676 uses proprietary digital adaptive turn-off control technology to replace the secondary-side parallel Schottky diodes with a MOSFET for high power density and lower cost.  More efficient than the diodes it replaces, the iW676 is also more efficient than conventional synchronous rectifiers.

The iW676 is optimized for lowest BOM cost in applications up to 12V and direct charging down to 3V. It also offers an option that incorporates Dialog’s unique Active Voltage Positioning (AVP) control to enable ultra-fast dynamic load response (DLR) and no-load power consumption of the entire travel adapter as low as 20mW, with no added pins or external components needed.

A DiaSIM™ simulation model is available for the iW676. For more information and where to download, please visit the DiaSIM™ page.

Features

25V Output

Optimized for Lowest BOM Cost in Applications up to 12V

Optimized for Direct Charging Applications Down to 3V

Wide VIN Pin Operating Voltage Up to 25V

Active Voltage Positioning (AVP) Control Option for:

  • Low No-Load Power Consumption of the Travel Adapter, as Low as 20mW
  • Ultra-Fast Dynamic Load Response (DLR)
  • No Additional Pins or External Components Needed

Eliminates Parallel Schottky Diode

  • Higher Efficiency, Lower BOM Cost

Works with Dialog Primary-Side Controllers, Including: iW1781, iW1782, iW1780H, iW1602, iW1702, iW1797, iW1799

Applications

Compact AC/DC Adapters/Chargers for Smartphones and Tablets, including RapidCharge™ and Direct Charge

     Model Available!

Package

Small, SOT23 6-Pin Package

Block Diagrams

iw1797_iw657p_typical_applications_diagram_-_web_v1_1.jpg

iW1797/iW657P Typical Applications Diagram

iw676_functional_block_diagram_web.jpg

iW676 Functional Block Diagram

iw1799_iw657p_typical_applications_diagram_-_web_v1.jpg

iW1799/iW657P Typical Applications Diagram

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

Stay connected

Get in touch with us directly through our worldwide sales offices, or contact one of our global distributors and representatives.

Inquiries Distributors and Representatives Register for newsletters
Product Briefs and Summaries
Name Date Version
iW676 Product Summary (518.4 KB) 04/10/2019 1.4
Datasheets
Name Date Version
iW676 Datasheet (1.05 MB) (Registered users only) 04/10/2019 1.6
DiaSIM Simulation Tools
Name Date Version
iW676 DiaSIM™ Model (171.59 KB) (Registered users only) 12/12/2018 1.0
NL5 Quick Start Guide (4.04 MB) 16/09/2016 1.0
Reference designs
Name Date Version
Reference Design EBC10203: iW1781-00, iW656-18-00 and iW676-00 18W USB PD 5V/3A,5.5V/3A,6V/3A,7V/2.5A,8V/2.2A,9V/2A High Efficiency Design (5.64 MB) (Registered users only) 18/07/2017 1.0
Reference Design EBC10205: iW1781-00, iW656-24-03 and iW676-00 24W USB PD 5V/3A 6V/3A 7V/3A 8V/3A 9V/2.7A 12V/2A 15V/1.6A High Efficiency Design (3.74 MB) (Registered users only) 18/07/2017 1.0
Reference Design EBC10206: iW1781-30, iW656-24-31 and iW676-00 24W USB PD 5V/3A, 6V/3A, 7V/3A, 8V/3A, 9V/2.7A, 12V/2A, 15V1.6A (5-10.6V/2.6A) High Efficiency Design (2.98 MB) (Registered users only) 18/07/2017 1.0
Reference Design EBC10214: iW1791-22, iW676-00 and WT6615F 27W USB PD 3.0 5V/3A,7V/3A,9V/3A,12V/2.25A, 5V PPS (3V-5.9V/3A) and 9V PPS (3V-11V/2.45A) Design (3.46 MB) (Registered users only) 30/03/2018 1.0
Reference Design EBC10215: iW1791-02, iW657P-27-92 and iW676-00 27W (33W Max) USB PD&PPS 5V/3A,6V/3A,7V/3A,9V/3A,12V/2.25A, 5V PPS (3.3V-5.9V/3A) and 9V PPS (3.3V-11V/3A) Design (3.47 MB) (Registered users only) 28/03/2018 1.0
Reference Design EBC10216: iW1791-02, iW657P-27-93 and iW676-00 27W (CP) USB PD&PPS 5V/3A,6V/3A,7V/3A,9V/3A,12V/2.25A, 5V PPS (3.3V-5.9V/3A) and 9V PPS (3.3V-11V/3A) Design (3.44 MB) (Registered users only) 30/03/2018 1.0
Reference Design EBC10217: iW1781-30, iW657P-45-94 and iW676-00 45W (CP) USB PD&PPS 5V/3A,9V/3A,15V/3A, 20V/2.25A 5V PPS (3.3V-5.9V/3A), 9V PPS (3.3V-11V/3A), 15V PPS (3.3V-15V/3A) and 15-16V 45W CP Design (5.33 MB) (Registered users only) 30/03/2018 1.0
Reference Design EBC10218: iW1791-02, iW657P-18-90 and iW676-00 18W (22W Max) USB PD&PPS 5V/3A,6V/3A,7V/2.55A,8V/2.25A, 9V/2A 5V PPS (3.3V-5.9V/3A) and 9V PPS (3.3V-11V/2A) Design (3.46 MB) (Registered users only) 30/03/2018 1.0
Reference Design EBC10219: iW1791-02, iW657P-18-91 and iW676-00 18W (CP) USB PD&PPS 5V/3A,6V/3A,7V/2.55A,8V/2.25A, 9V/2A 5V PPS (3.3V-5.9V/3A) and 9V PPS (3.3V-9V/2A, 9-11V/CP 18W) Design (3.4 MB) (Registered users only) 30/03/2018 1.0
Reference Design EBC10222: iW1799-02 + iW657P-27-93B + iW676-00 27W USB PD PPS Constant Power Design (3.71 MB) (Registered users only) 26/08/2019 1.0
Reference Design EBC10223: iW1799-02 + iW657P-27-92B + iW676-00 33W USB PD PPS Design (3.93 MB) (Registered users only) 26/08/2019 1.0
Reference Design EBC10224: iW1799-32 + iW657P-45-94B + iW676-00 45W USB PD PPS 48W Max Design (5.61 MB) (Registered users only) 26/08/2019 1.0
Reference Design EBC10225: iW1799-32 + iW657P-65-F0 + iW676-00 65W USB PD PPS Electronically Marked Cable (EMC) Design (3.68 MB) (Registered users only) 03/09/2019 1.0
Reference Design EBC10240: iW1797-05 + iW676-00 + iW657P-27-92 USB PD PPS 27W Design (3.58 MB) (Registered users only) 15/07/2020 1.0