Photo Release -- Alpha and Omega Semiconductor Expands Family of EZBuck(TM) Regulators Featuring Constant On-Time (COT) Control Architecture

Alpha and Omega AOZ1237
Alpha and Omega Semiconductor Logo

SUNNYVALE, Calif., April 23, 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 released AOZ1237, the latest addition to a family of high efficiency, easy-to-use synchronous EZBuck regulators featuring a proprietary Constant On-Time (COT) control architecture that enables smaller solutions and simplifies designs. The AOZ1237 provides the perfect solution for next generation computing chipsets that are pushing the limits of DC/DC converter size; such as those in the latest notebook PCs, Ultrabooks, graphics cards, servers, data storage systems, and high-end smart TVs.

A photo accompanying this release is available at

Power supplies which traditionally used DC/DC controller ICs with external MOSFETs are now requiring more integrated solutions to fit within the smaller printed circuit board (PCB) area. AOS's low on-resistance MOSFET technology combined with advanced packaging technology enables high performance DC/DC regulators in small package sizes. The AOZ1237 provides 8A of continuous output current in a 4x4mm QFN package, while operating over a wide input voltage range of 2.7V to 24V. This new device can provide higher performance with minimal power consumption, making it an ideal solution for system designers who want to reduce the PCB area and total system size without hindering performance. The proprietary COT architecture provides ultra-fast load transient response performance and allows stable and low voltage ripple operation with small size ceramic capacitors. Competing solutions require several external components when using all ceramic capacitors and need to generate a larger output ripple voltage to stabilize the circuit. Additionally, the input feed forward feature of AOZ1237 provides a constant switching frequency over the entire input voltage range, which further alleviates noise concerns for designers.

"The AOZ1237 was designed for high performance and ease-of-use for next generation computing platforms. AOS's proprietary COT control architecture and small packaging technologies help our customers meet their goal of developing efficient and high power density solutions with a quick-time-to-market." said Daniel Chang, Vice President of Power IC at AOS.

Pricing and Availability

The AOZ1237 is immediately available in production quantities with a lead-time of 12 weeks. The unit price for 1,000 pieces is $2.25.

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

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

Source:Alpha and Omega Semiconductor