comment on this article

Smple-to-use synchronous buck regulators

Alpha and Omega Semiconductor has introduced the AOZ676xDI series of high switching frequency and simple-to-use synchronous buck regulators.

The AOZ6762DI and AOZ6763DI are capable of delivering 2A and 3A, respectively, and up to 15W output power. These devices offer a low on-resistance power stage and are packaged in a 3mm x 3mm DFN 8-lead package with an exposed thermal pad, allowing cooler power conversion for a variety of consumer and networking equipment such as wireless AP/routers, set-top boxes, cable modems, audio equipment, and LCD TVs.

The power stage comprised of two power MOSFETs has been optimised for efficient synchronous switching in order to reduce both switching and conduction losses. These devices can achieve > 90% efficiency at full load operation.

When operating in low output current conditions, the devices run in a proprietary pulse energy mode (PEM) to achieve high efficiency by reducing switching loss. Under this mode, the regulators can still maintain up to 86% efficiency at 10mA load operation.

The high switching frequency of AOZ6762 and AOZ6763 provides some key benefits in a buck regulator

  • Enables the use of smaller external components, such as inductors and capacitors, reducing PCB footprint and component costs.
  • Better transient response while maintaining fixed frequency switching.
  • Reduce the side-band interference in wireless applications.

High switching frequency combined with low minimum controllable on-time, enables low output voltages from a 12V bus making these devices suitable power converters for next-generation SoCs, FPGAs, and ASICs using deep sub-micron processes. External compensation makes it easy for the user to trade off transient response and output ripple requirements with various output filters.

Author
Neil Tyler

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Extreme boards!

“Extraordinary circumstances often bring along with them extraordinary ...

LED controllers

Infineon's ICL88xx family of single-stage flyback controllers with constant ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

Unboxing the FR5969

Check out what's in your FR5969 Launchpad + Booster Pack bundle kit. The board ...

World IoT Day

ByteSnap Design, a specialist in embedded systems design and development, has ...

Semiconductor boom

Compared to an ailing steel industry, just a few years ago, the semiconductor ...

Fit for service

There are some truly exciting opportunities on the horizon. Over recent years, ...

New possibilities

With the recent investment in the business by DBAG congatec is poised for ...