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The road to 200A VRM

Posted: 19 Oct 2009     Print Version  Bookmark and Share

Keywords:DC/DC converters  voltage lower  DC PC market 

Over the past few years, DC/DC converters for the PC market have experienced a major push for higher currents at lower voltages, and much tighter DC and transient specifications. By all indications, the core voltage is pushing steadily toward 1V at a current in the neighborhood of 200A for servers and high-end applications. This clearly puts enormous pressures on the power supply engineers to design more efficient and cost competitive converters that can meet these requirements while not overloading a cooling system that has to grow to accommodate the same high demands placed on the converter. We were very intrigued by this challenge and decided to explore the possibility of designing such a DC/DC converter today using today's components and observing all the recent advancements in the understanding of the different loss mechanisms in a high frequency, high current switch mode power supply applications. We were able to design a voltage regulator module, VRM that can deliver 1V at 200A. This paper describes this VRM in some details.

View the PDF document for more information.

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