Digital Synchronous Rectifier Replaces Schottky Diode for Ultra-High Power Density AC/DC Power Adapters, Including RapidCharge™
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Overview
Description
The iW676 digital synchronous rectifier can be used with several of Renesas' primary-side controllers 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 the lowest BOM cost in applications up to 12V and direct charging down to 3V. It also offers an option that incorporates Renesas' 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
- No Additional Pins or External Components Needed
- Eliminates Parallel Schottky Diode
- Higher Efficiency, Lower BOM Cost
- Works with Renesas Primary-Side Controllers, Including: iW1781, iW1782, iW1780H, iW1602, iW1702, iW1797, iW1799
- Small, SOT23 6-Pin Package
Applications
| AC Drives/GP Inverters Solution | |
|
100W USB Power Delivery (PD) Adaptor with Multi-Output |
| Motor Control with Resolver Solution | |
| Online Uninterruptible Power Supply (UPS) |
Applications
- Compact AC/DC Adapters/Chargers for Smartphones and Tablets, including RapidCharge™ and Direct Charge
- DiaSIM™ Simulation Model Available
Documentation
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Date | |
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| PDF 524 KB | Product Brief | |
| PDF 872 KB | Datasheet | |
Reference Design EBC10222: iW1799-02 + iW657P-27-93B + iW676-00 27W USB PD PPS Constant Power Design
ZIP
3.71 MB
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Other | |
| ZIP 3.93 MB | Other | |
| ZIP 5.61 MB | Other | |
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| ZIP 5.64 MB | Other | |
| ZIP 3.74 MB | Other | |
| ZIP 2.98 MB | Other | |
| ZIP 3.46 MB | Other | |
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| ZIP 5.33 MB | Other | |
| ZIP 3.46 MB | Other | |
| ZIP 3.40 MB | Other | |
| PDF 3.96 MB | Manual - Development Tools | |
17 items
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Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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|---|---|---|
| DiaSIM™ Simulation Models DiaSIM simulation models let the user test and validate AC/DC power supply designs prior to prototyping.
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Simulator | Renesas |
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOT23-6L | Tape & Reel | ||
| SOT23-6L | Tape & Reel | ||
| SOT23-6L | Tape & Reel |
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