DSP-based interleaved buck power factor corrector

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作者：
20143618123876
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(1) Dept. of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City, Taiwan; (2) Dept. of Electronic Engineering, National Taiwan University of Science and Technology, Taipei City, Taiwan | 1600年 / IEEJ卷 / IEEE Computer Society期
关键词：
An interleaved Buck PFC with digital and clamping current control is proposed in this paper. Inductor current can be operated in CCM or DCM; which depends on different input line voltages and load conditions. The interleaved topology is composed of two Buck converters; which can have higher power density; lower input and output ripple currents and improve input current harmonics. Microprocessor TMS320X228035 is adopted to be the controller to implement clamping current mode control and raise the PF value at universal input. And the phase management can be adopted to lift light-load efficiency. A 300-W/80V-output digital interleaved Buck PFC with universal input and light-load efficiency all greater than 95.5% is implemented. When input voltage is over 115Vrms; the mid-to-full load PF values are all greater than 0.94. © 2014 IEEE;
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107091
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