12V/1200W High Frequency LLC Converter Design using GaN FETs Design Guide
■Many people still debate whether global warming is real, and, if so, whether human behavior impacts it. Inarguably, 2018 was the fourth hottest year in history; July 2018 was California’s hottest month on record [1]; and CO2 emissions are known to affect climate change.
■The Information and Communication Technology (ICT) sector generates over 2% of the global CO2 emissions. Data centers are the fastest growing segment within ICT and account for 1.4% of global electricity consumption. That percentage is expected to increase at faster rates due partly to the rapidly growing use of cloud computing and Internet services [2].
■High efficiency AC to DC and DC to DC power supplies using GaN can reduce energy loss by 50%, which would then reduce CO2 emissions emitted by Data Centers. Soft-switching topologies capable of operating at high frequencies while reducing switching losses are optimal for such power supplies—with the more commonly preferred choice being the LLC resonant topology as it offers the following advantages:
▲Zero-Voltage Switching (ZVS), which produces high efficiency and enables the transformer size to shrink due to high frequency use.
▲Limited dv/dt and di/dt, which reduces ringing, spikes, and radiated EMI problems.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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March 11, 2019 |
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dg009.0 |
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13.8 MB |
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