Alpha and Omega Semiconductor to Present at the 18th Annual B. Riley & Co. Investor Conference

Alpha and Omega Semiconductor Limited ("AOS") (Nasdaq:AOSL) today announced that Mr. Yifan Liang, chief financial officer, will present at the 18th Annual B. Riley & Co. Investor Conference on Wednesday, May 24, 2017, at 8:00 a.m. PDT. The conference will take place at Loews Santa Monica Beach Hotel in Santa Monica, California. Mr. Liang will also be available for one-on-one meetings, and interested parties may schedule meetings through their B. Riley representative.

A live and archived webcast of the presentation may be accessed at the Company's website: http://investor.aosmd.com.

About Alpha and Omega SemiconductorAlpha 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 AOS 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' 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 http://www.aosmd.com/.

CONTACT: Investor Relations

So-Yeon Jeong

408-789-3172

[e-mail]