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How to Design and Implement an Adapter Power Supply With Active Clamp Flyback

December 1, 2020 by Ahsan Zaman and Aleksandar Radic

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Image: ©Shutterstock/Danyliuk Konstantine

Designing power supplies, especially for power adapters, requires that the designer possess a particular level of expertise and insight into implementing the best architecture. This level of expertise is especially relevant when using a power architecture known as Active Clamp Flyback (ACF). This article will demonstrate, to designers, a practical design method to obtain a reliable, robust, efficient, and high power density, ACF architecture with the bonus of fast time-to-market. Designers can eliminate that conventional Resistor Capacitor Diode (RCD) snubber circuit in their flyback converter design and learn the more efficient ways of active clamp operation. The ultimate solution is an all-Silicon design in a single package which also includes continuous advanced adaptive cycle-by-cycle digital control circuit for im­­proved performance over varying line/load/temperature as well as component tolerances. The outcome of the proposed design is high efficiency and power density, low EMI, and stringent line/load regulation.

For more about this article see link below.
To access the PDF version of this article, member sign-in is required.

https://ieeexplore.ieee.org/document/9296866

Filed Under: Past Features Tagged With: Clamps, Digital control, Performance evaluation, Power supplies, Power system measurements, Reliability engineering, Snubbers

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About the Magazine

IEEE Power Electronics Magazine publishes peer-reviewed articles related to power electronics and its applications which encompass the effective use of electronic components, application of control theory and circuit design techniques, and the development of analytical tools used in efficient and effective energy conversion, control, utilization, and conditioning of electric power.

The IEEE Power Electronics Magazine is limited to the field of interest of the IEEE Power Electronics Society. Topics also include publication of new trend technologies that are being pursued by industry, design practices and case studies, significant amount of state of the art surveys tutorials, and non-technical contributions: news about society activities, interviews, and historical articles.

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To educate, inform, and entertain our community of IEEE Power Electronics Society members on technology, events, industry news, and general topics relating to consumer electronics and to further serve and support our Members in professional career development through tutorials and raising awareness of engineering tools and technologies.

The magazine is archived in IEEE Xplore, and articles from all issues are available for download.

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