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- W3037933908 abstract "High input voltage and high frequency LLC converters with synchronous rectification (SR) are widely used in recent years. For these converters, reliable SR gate driving signals immune to parasitic components should be provided. Therefore, an adaptive driving scheme for SR without signal sensing is proposed. A mathematic model is built to determine the conduction time related to the switching frequency and load condition so that the driving signals are adjusted adaptively. This method provides reliable gate driving signals without any detection circuits and the efficiency is greatly improved compared to other signal-senseless methods. The tolerance effects of the resonant components are analyzed to evaluate the accuracy of the driving signals. A 1 MHz prototype with 1 kV input and 32 V/ 3 kW output is built to verify the theoretical analysis. The converter can achieve the power density of 103 W/in3 and peak efficiency of 95.92% with an improvement of 2.0% at 3 kW compared to the conventional fixed on-time driving scheme." @default.
- W3037933908 created "2020-07-02" @default.
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- W3037933908 date "2020-03-01" @default.
- W3037933908 modified "2023-10-18" @default.
- W3037933908 title "A Sensorless Synchronous Rectification Driving Scheme in 1-kV Input 1-MHz GaN LLC Converters with Matrix Transformers*" @default.
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- W3037933908 doi "https://doi.org/10.1109/apec39645.2020.9124534" @default.
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