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Alpha and Omega Semiconductor Introduces Innovative AlphaMOS(TM) II High Voltage Technology



Alpha and Omega Semiconductor Introduces Innovative AlphaMOS(TM) II High
Voltage Technology

New Technology Offers a Robust Alternative to Super-Junction MOSFETs

SUNNYVALE, Calif., Oct. 29, 2012 (GLOBE NEWSWIRE) -- Alpha and Omega
Semiconductor Limited (AOS) (Nasdaq:AOSL), a designer, developer and global
supplier of a broad range of power semiconductors, today introduced a new high
voltage MOSFET silicon technology that offers a more robust alternative to
super-junction type products. The AlphaMOS™ II (a patent pending proprietary
structure and process) combines planar-like robustness and controlled
switching characteristics with the low on-resistance performance of
super-junction type devices. The new products based on AlphaMOS™ II are
ideally suited for high voltage applications where reliability and performance
are critical. Such applications include server, telecom and networking power
suppliers, uninterruptible power supplies, solar inverters, industrial motor
control systems, and LED lighting.

Over the years, manufacturers of super-junction MOSFETs have commonly migrated
to higher-density processes to reduce cost on a specific product performance.
In high-power switching applications, this die-shrink approach can create a
design dilemma as smaller dies typically compromise die temperature and
avalanche energy capability which can jeopardize overall system performance
and reliability. AOS's new AlphaMOS II technology offers a simplified
manufacturing process without compromising the core performance of the MOSFET.
The new devices have been optimized for diode recovery and finely-tuned
switching parameters for low noise operation and high efficiency.
Additionally, the AlphaMOS II avalanche energy rating (Eas) is about 60%
higher than today's leading super-junction offerings of the same current
rating, making it perfectly suited for designs that require higher robustness
and reliability.

"With its wealth of device technology and application expertise developed over
the years, AOS is addressing the major concerns of customers using
super-junction parts by providing more robust solutions without sacrificing
cost or performance," said Yalcin Bulut, Vice President of Discrete Product
Lines at AOS.

Availability

AOS will roll-out a complete portfolio of 600V AlphaMOS II products within
Q4'2012.

About AOS

Alpha and Omega Semiconductor Limited, or AOS, is a designer, developer and
global supplier of a broad range of power semiconductors, including a wide
portfolio of Power MOSFET, IGBT and Power IC products. AOS has developed
extensive intellectual property and technical knowledge that encompasses the
latest advancements in the power semiconductor industry. AOS differentiates
itself by integrating its Discrete and IC semiconductor process technology,
product design, and advanced packaging know-how to develop high performance
power management solutions. AOS's portfolio of products targets high-volume
applications, including portable computers, flat panel TVs, LED lighting,
smart phones, battery packs, consumer and industrial motor controls and power
supplies for TVs, computers, servers and telecommunications equipment. For
more information, please visit www.aosmd.com.

Forward Looking Statements

This press release contains forward-looking statements that are based on
current expectations, estimates, forecasts and projections of future
performance based on management's judgment, beliefs, current trends and
anticipated product performance. These forward-looking statements include,
without limitation, references to the efficiency and capability of new
products, and the potential to expand into new markets. Forward looking
statements involve risks and uncertainties that may cause actual results to
differ materially from those contained in the forward-looking statements.
These factors include, but are not limited to, the actual product performance
in volume production, the quality and reliability of the product, our ability
to achieve design wins, the general business and economic conditions, the
state of the semiconductor industry, and other risks as described in the
Company's annual report and other filings with the U.S. Securities and
Exchange Commission. Although the Company believes that the expectations
reflected in the forward looking statements are reasonable, it cannot
guarantee future results, level of activity, performance, or achievements. You
should not place undue reliance on these forward-looking statements. All
information provided in this press release is as of today's date, unless
otherwise stated, and AOS undertakes no duty to update such information,
except as required under applicable law.

CONTACT: Martha Aparicio
         408-789-3233
         martha.aparicio@aosmd.com

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