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Coupled inductors for power supplies

Posted: 10 Jun 2007     Print Version  Bookmark and Share

Keywords:switching converters  power management  coupled inductors  multiphase buck converter 

Advanced semiconductor technology allows an increasing number of transistors to be integrated onto ever-smaller silicon chips. This increases the power density, however, and presents power management challenges, especially in computing and telecommunications applications. First, the higher the integration, the higher the power required to operate the chip. In addition, with the transistors working at higher frequency, there is more dynamic load on the power supply. The output voltage can be decreased to avoid overheating the silicon, but the lower operating voltage tightens the voltage-regulation requirements.

In these applications, the most-widely adopted circuits are the multiphase buck converter and its isolated versions, including full-bridge, half-bridge, and forward converters. To optimize the design, several factors, such as control and power devices, need to be considered. Here's what you can do to optimize your design using inductor for switching converters, and a solution that uses coupled inductors.

View the PDF document for more information.

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