• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Electrical Engineering News and Products

Electronics Engineering Resources, Articles, Forums, Tear Down Videos and Technical Electronics How-To's

  • Products / Components
    • Analog ICs
    • Battery Power
    • Connectors
    • Microcontrollers
    • Power Electronics
    • Sensors
    • Test and Measurement
    • Wire / Cable
  • Applications
    • 5G
    • Automotive/Transportation
    • EV Engineering
    • Industrial
    • IoT
    • Medical
    • Telecommunications
    • Wearables
    • Wireless
  • Learn
    • eBooks / Handbooks
    • EE Training Days
    • Tutorials
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • White Papers
    • Educational Assets
    • Design Guide Library
    • Digital Issues
    • Engineering Diversity & Inclusion
    • LEAP Awards
    • Podcasts
    • DesignFast
  • Videos
    • EE Videos and Interviews
    • Teardown Videos
  • EE Forums
    • EDABoard.com
    • Electro-Tech-Online.com
  • Bill’s Blogs
  • Advertise
  • Subscribe

Small-Outline Synchronous Rectification MOSFET Driver

July 17, 2018 By Diodes Incorporated

Diodes Incorporated announced the APR346 Secondary Side Synchronous Rectification MOSFET Driver, providing increased efficiency for off-line power adapters delivering 5V to 20V DC from an AC supply.

Designed to operate in Continuous Conduction Mode (CCM), Discontinuous Conduction Mode (DCM) and Quasi-Resonant mode (QR), the APR346 is used to drive an external MOSFET to deliver the benefits of Synchronous Rectification (SR), which provides significantly higher performance and efficiency than diode-based secondary side rectification. SR is now preferred by power adapter manufacturers and is expected to form the basis of power adapters for notebooks, mobile phones and a range of other portable devices, many of which will be adopting the USB Type-C connector with PD (Power Delivery) capabilities.

The APR346 requires very few additional components and, because it is designed to operate with an external MOSFET, it offers maximum design flexibility. With fast turn-on and turn-off times of 70ns and 100ns (typical) respectively, it achieves high performance through directly sensing the Drain-Source voltage of the external MOSFET and rapidly turning the MOSFET on or off according to demand from the load. A built-in minimum on-time of 1.6μs (typical) effectively blanks out any potential Drain voltage ringing to maintain efficient operation as the load current begins to flow through the channel.

The APR346 is available in the small outline SOT26 package and is priced at $0.40 in 1000 units.

 

You Might Also Like

Filed Under: Power Electronic Tips

Primary Sidebar

EE Engineering Training Days

engineering

Featured Contributions

Integrating MEMS technology into next-gen vehicle safety features

Five challenges for developing next-generation ADAS and autonomous vehicles

Robust design for Variable Frequency Drives and starters

Meeting demand for hidden wearables via Schottky rectifiers

GaN reliability milestones break through the silicon ceiling

More Featured Contributions

EE Tech Toolbox

“ee
Tech Toolbox: 5G Technology
This Tech Toolbox covers the basics of 5G technology plus a story about how engineers designed and built a prototype DSL router mostly from old cellphone parts. Download this first 5G/wired/wireless communications Tech Toolbox to learn more!

EE Learning Center

EE Learning Center
“ee
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, tools and strategies for EE professionals.
“bills
contribute

R&D World Podcasts

R&D 100 Episode 10
See More >

Sponsored Content

Designing for Serviceability: The Role of Interconnects in HVAC Maintenance

From Control Boards to Comfort: How Signal Integrity Drives HVAC Innovation

Built to Withstand: Sealing and Thermal Protection in HVAC Sub-Systems

Revolutionizing Manufacturing with Smart Factories

Smarter HVAC Starts at the Sub-System Level

Empowering aerospace E/E design and innovation through Siemens Xcelerator and Capital in the Cloud

More Sponsored Content >>

RSS Current EDABoard.com discussions

  • BA4116 reference resistance
  • unknown component z1
  • Collector Current Low side Has a large drop respect High Side during Miller during Double Pulse Test
  • is there vay for credit card size phone charger?
  • Question on options of set_clock_group

RSS Current Electro-Tech-Online.com Discussions

  • Fixing board, Easy question HEX SCHMITT
  • Can I make two inputs from one??
  • Display TFT ST7789 (OshonSoft Basic).
  • Home Smoke detectors are all Beeping Batteries are not dead.???
  • The Analog Gods Hate Me
Search Millions of Parts from Thousands of Suppliers.

Search Now!
design fast globle

Footer

EE World Online

EE WORLD ONLINE NETWORK

  • 5G Technology World
  • Analog IC Tips
  • Battery Power Tips
  • Connector Tips
  • DesignFast
  • EDABoard Forums
  • Electro-Tech-Online Forums
  • Engineer's Garage
  • EV Engineering
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips

EE WORLD ONLINE

  • Subscribe to our newsletter
  • Teardown Videos
  • Advertise with us
  • Contact us
  • About Us

Copyright © 2025 · WTWH Media LLC and its licensors. All rights reserved.
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media.

Privacy Policy