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Powering Graphics Processors from a 48 V Bus

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Introduction

Artificial Intelligence (AI), gaming, cloud computing, and autonomous cars are all using the latest generation graphics processors (GPUs) in lieu of CPUs. The reasoning is that GPUs offer higher computational density than traditional CPUs as measured in terms of acquisition cost, size, and power requirements [Jensen Huang Keynotes NVIDIA’s 2018 GPU Technology Conference].

The implications for power architecture seem clear; 48 V will be the dominant voltage on the board with the GPU, and the final voltage will need to be somewhere around 1 V or less. Power levels are already around 1.5 kW and could soon go to as high as 3 kW per GPU. What is less clear is what will be the architecture for getting from 48 V to 1 V at these power levels. Continue Reading

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Trade War Has Damaged U.S. Chip Industry in Ways a Deal May Never Fix

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SAN FRANCISCO — Alex Lidow has sold semiconductors in China for decades, starting at a company, called International Rectifier, that his father and grandfather founded in the Los Angeles area in 1947.

Now Mr. Lidow runs Efficient Power Conversion, which makes chips that manage electrical power in cars and other products. Efficient Power has a strong foothold in China, but has lately run into resistance from customers there that he traces to moves in Washington.

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Alex Lidow on Bloomberg TV

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Interview with Cory Johnson of Bloomberg TV discussing GaN.

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Founder & CEO of Efficient Power Conversion Co.

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Alex joined International Rectifier (NYSE:IRF) as an R&D engineer and is the co-inventor of the HEXFET power MOSFET, a power transistor that displaced the bipolar transistor and launched modern power conversion. Over the 30 years Dr. Lidow was at International Rectifier, his responsibilities grew from engineer to head of R&D, head of manufacturing, head of sales and marketing, and finally CEO for 12 years. In addition to holding many power MOSFET and GaN FET patents, Alex has authored numerous publications; most recently he co-authored the first textbook on Gallium Nitride (GaN) transistors, GaN Transistors for Efficient Power Conversion. In 2004 he was elected to the Engineering Hall of Fame, and in 2005 International Rectifier, under his leadership was named one of the best managed companies in America by Forbes magazine. Dr. Lidow earned a Bachelor of Science in Applied Physics from the California Institute of Technology and a doctorate in Applied Physics from Stanford University. Since 1998 Alex has been a member of the Board of Trustees of the California Institute of Technology.

Alex is widely considered the foremost thought leader in GaN technology today.

UPDATE 19.Dec.2016: Alex has been chosen as one of the “60 People Steering Autonomous Vehicles” by Automotive New

Wikipedia: https://en.wikipedia.org/wiki/Alexander_Lidow

 

 

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