White Paper: Power
Informative eBook: Getting Started With Transformers
SPONSORED BY: ![]()
Transformers are widely used to efficiently transfer both power and data in switching power supplies, MOSFET gate drivers, and isolation circuits. Because they come in what can be a bewildering array of sizes and configurations and are often characterized with unfamiliar terms, they can be confusing to the uninitiated.
But fear not! All transformers work from the same fundamental principles, so we've assembled this e-Book to help you find the right transformer for many common applications.
Don't have an account?
Overview
The white paper serves as a comprehensive guide to understanding transformers, particularly in the context of switchmode power supplies, gate drivers, and industrial applications. It introduces the fundamental principles of transformers and their diverse applications, emphasizing the importance of selecting the right type for specific needs.
The document highlights two primary types of transformers: forward-mode and flyback transformers. Forward-mode transformers are noted for their efficiency, achieving up to 95-97% over a wide range of power levels. They are particularly suitable for applications requiring output currents up to approximately 15 Amps and are preferred for high output power levels, traditionally starting from 100 watts but now extending down to about 50 watts due to advancements in technology. The forward converter transformer operates by converting a voltage pulse at the primary winding to a voltage at the secondary winding based on the turns ratio.
In contrast, flyback transformers are also discussed, although specific details about them are less emphasized in the provided excerpts. The paper suggests that flyback transformers are used in various applications, including those that require isolation and voltage transformation.
Additionally, the document outlines new products, such as high-isolation coupled inductors and compact transformers designed for no-opto flyback topology, which are optimized for efficiency and size. It also mentions the XGL family of ultra-low loss power inductors, which are ideal for use in forward converters and EMI filters.
Overall, the white paper aims to demystify transformer technology, providing insights into their operation, selection criteria, and applications, thereby equipping readers with the knowledge needed to make informed decisions in their use of transformers in various electronic systems.