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Fujitsu Wins Grand Prize in 26th Global Environment Award

Recognized for development of the world's smallest and most efficient AC adapter

Fujitsu Limited,Fujitsu Laboratories Ltd.

Tokyo and Kawasaki, Japan, March 03, 2017

Fujitsu Limited and Fujitsu Laboratories Ltd. today announced that Fujitsu has been awarded the grand prize of the 26th annual Global Environment Award sponsored by the Fujisankei Communications Group. Fujitsu received this honor for Fujitsu Laboratories' development of a miniature, highly efficient AC adapter that uses gallium nitride (GaN)(1) high electron mobility transistors (HEMT)(2) (GaN-HEMT).

The Fujitsu Group, which aims to contribute to society through its business, strives to develop highly energy-efficient products, and has been working to improve the energy efficiency of the power devices used in information and communication equipment. As part of this effort, Fujitsu Laboratories developed the world’s smallest and most efficient AC adapter using GaN-HEMT in 2015. This AC adapter can reduce power dissipation by more than 50% when charging mobile devices, and can charge them in one-third the time previously required. Going forward, Fujitsu will apply this AC adapter technology widely, contributing to a reduced environmental burden.

About the Global Environment Award

The Global Environment Award, sponsored by the Fujisankei Communications Group, recognizes companies and organizations that undertake initiatives to preserve the environment or prevent global warming, with the goal of promoting harmony with industrial development and the global environment.

The World's Smallest and Most Efficient AC Adapter Using GaN-HEMT

In 2015, Fujitsu Laboratories led the world in developing the world’s smallest and most efficient AC adapter using low dynamic resistance GaN-HEMT as the switching element. In order to suppress the current loss that normally accompanies high-speed operation, Fujitsu Laboratories implemented a circuit, a new technology at the time of development, which accurately controls the timing for switching when converting from alternating current to direct current. By utilizing the low dynamic resistance of GaN-HEMT, Fujitsu Laboratories developed a smaller and more efficient adapter. This technology was able to reduce power dissipation when charging mobile devices by more than 50%, while enabling rapid charging in one-third the time previously required.

Related Websites

"Fujitsu Develops World's Smallest, Most Efficient 12-W AC Adapter," press release, December 9, 2015


  • [1] Gallium nitride (GaN)

    GaN-based semiconductors are wide bandgap semiconductors that enable operations at a higher voltage than conventional semiconductor materials, such as silicon (Si) or gallium arsenide (GaAs).

  • [2] High electron mobility transistor (HEMT)

    A field-effect transistor that takes advantage of operation of the electron layer at the boundary between different semiconductor materials that is relatively rapid compared to that within conventional semiconductors. Fujitsu led the industry with its development of the HEMT in 1980, and the technology now underpins much of today's fundamental IT infrastructure, including satellite transceivers, wireless equipment, GPS-based navigation systems, and broadband wireless networking systems.

About Fujitsu

Fujitsu is the leading Japanese information and communication technology (ICT) company, offering a full range of technology products, solutions, and services. Approximately 156,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.7 trillion yen (US$41 billion) for the fiscal year ended March 31, 2016. For more information, please see http://www.fujitsu.com.

About Fujitsu Laboratories

Founded in 1968 as a wholly owned subsidiary of Fujitsu Limited, Fujitsu Laboratories Ltd. is one of the premier research centers in the world. With a global network of laboratories in Japan, China, the United States and Europe, the organization conducts a wide range of basic and applied research in the areas of Next-generation Services, Computer Servers, Networks, Electronic Devices and Advanced Materials. For more information, please see: http://www.fujitsu.com/jp/group/labs/en/.

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All company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information provided in this press release is accurate at time of publication and is subject to change without advance notice.

Date: 03 March, 2017
City: Tokyo and Kawasaki, Japan
Company: Fujitsu Limited ,Fujitsu Laboratories Ltd.