Photo Release -- Alpha and Omega Semiconductor Introduces New Power Factor Correction Product Line for Efficient and Cost

Photo Release -- Alpha and Omega Semiconductor Introduces New Power Factor
Correction Product Line for Efficient and Cost-Effective Power Conversion
Solutions

SUNNYVALE, Calif., Jan. 25, 2013 (GLOBE NEWSWIRE) -- Alpha and Omega
Semiconductor Limited (AOS) (Nasdaq:AOSL), a designer, developer and global
supplier of a broad range of power semiconductors and power ICs, today
introduced the first of a new product line of Power Factor Correction (PFC)
devices; the AOZ7111 is an active power factor correction controller which
integrates a number of safety features and functions for the design of robust,
efficient and cost-effective off-line power conversion solutions. The AOZ7111
is ideally suited for PFC applications that operate in critical conduction
mode (CRM) such as switch mode power supplies (SMPS), LCD TVs, LED and ballast
lighting, and AC-DC adapters.

AOS Correction Controller
 AOS's New Power Factor Correction
 Controller

A photo accompanying this release is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=16855

Power Factor Correction is a vital part of increasing overall power grid
efficiency and is thus mandated in an increasing range of power supply
applications. The AOZ7111 is AOS value added entry in this emerging market
which combines an AC input voltage fault detection function with an internal
closed-loop soft-start to allow a well managed current ramp-up. This feature
prevents large inrush currents during the system's startup and reset
operations. The secondary OVP function also makes the system more robust and
reliable. Additionally, the AOZ7111's zero current detection feature
eliminates the need for an auxiliary winding to reduce system cost.

"We are pleased with the customer and market feedback on our new power factor
correction solution. Our PFC control IC along with our high performance
MOSFETs have been optimized to bring extra safety features and functions while
continuing to focus on improved BOM cost for our customers. The added system
benefits to our customers, makes our first PFC product to the market a strong
contender." said Wayne Eng, Director of Product Marketing at AOS.

Technical Highlights

  *Critical conduction mode PFC controller
  *Control mode: voltage
  *Topology: boost
  *Frequency operation: variable
  *Package: Halogen free and RoHS compliant SOIC-8

Pricing and Availability

The AOZ7111 is immediately available in production quantities with a lead-time
of 12 weeks. The unit price for 1,000 pieces is $0.49.

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, which enables us to
introduce innovative products to address the increasingly complex power
requirements of advanced electronics. 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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