Active-Semi Adds Two High Performance Primary Side Regulation Pulse-width Modulation ICs for “Green Power” Adapter Applications

Active-Semi International, Inc. Announces the release of a New Family of High Performance Quasi Resonant (QR) mode PSR Regulators: ACT410, ACT411

DALLAS--()--Active-Semi announced today the release of the new ActivePSRTM family of high performance QR mode PSR ICs. These devices integrate protection features, achieve accurate constant current (CC) and improve efficiency and EMI performance.

“At Active-Semi, we focus on developing innovative ‘in charger’ solutions as well as general purpose adaptor solutions”

The ACT410 and ACT411 belong to the patented ActivePSRTM Family of Universal-input AC/DC off-line controllers for general purpose adapter applications. The ACT410 and ACT411 are designed for fly back topology working in discontinuous conduction mode (DCM) with full load switching frequency of 120kHz. This reduces transformer size and overall BOM cost in applications, such as 5V/2.1A tablet power adaptors and 12V/1A general purpose power adaptors.

“At Active-Semi, we focus on developing innovative ‘in charger’ solutions as well as general purpose adaptor solutions,” said Peter Huang, Director, AC/DC Marketing & Applications at Active-Semi. “Our new PSR family IC ACT410/1 was created to design the smallest power adaptor in the market and to meet the emerging efficiency standard set forth by the DOE. Our ACT410 solution for 5V/2.1A tablet adaptors requires a very small EFD15 transformer core, which is much smaller than the EPC17 in most existing solutions. The ACT411 solution for 12V/1A power adaptors requires only standard EE16, which is much smaller than the EF20 or EE19 in many existing solutions. The ACT41x family provides protection for an extensive range of abnormal fault conditions.”

Mr. Liu, the R&D Manager in Well Shin Technology Co., said, “We are very impressed with the ACT410's performance on our 5V/2.4A project. The 120 kHz switching frequency will help further reduce the core size and the solution cost. Its unique quasi-resonant (QR) mode operation highly improves the efficiency margin to exceed the existing DOE ES 2.0 efficiency standard and achieve the next level (DOE) efficiency standard. What’s more, the design is very simple and easy to use with its tiny SOT23-6 package design.”

Sample pricing under 10,000-piece units starts at $0.18 for the ACT410 and $0.19 for the ACT411.

About Active Semiconductor

Founded in 2004 in Silicon Valley, California and headquartered in Dallas, Texas, Active-Semi is the leader in flexible, highly integrated semiconductor power management solutions for digital control of analog power. The company's modular power management solutions energize today's consumer electronics and industrial designs by simplifying design, boosting mobile equipment performance and enabling intelligent battery charging. Active-Semi's solutions also provide energy-saving power conversion architectures that minimize energy usage and reduce system development cycle-time and cost.

Active-Semi ships 50 million power ICs per quarter and reached the "one billion units shipped" milestone in May 2012. The company continues to develop new intellectual property to enable leading edge solutions and has 89 granted, 25 pending, or provisional patents.

"Team Active" comprises approximately 150 international analog and mixed-signal semiconductor experts located in ISO9001:2008 certified operational/R&D centers and sales/marketing facilities in the United States, Japan, Korea, China, Hong Kong, and Taiwan.

For more information, visit


Active-Semi International
Ken Wong, 408-735-1806 / ext. 902 (Sales Inquires)

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Release Summary

Active Semi Introduces New PSR Power Devices, the ACT410 and ACT411

Active-Semi International