A power factor correction(PFC)circuit with a negative voltage shutdown function and an output of 400 V,250 W and efficiency of about 97％is designed,By using the characteristics of silicon carbide field-effect tubes(SiC MOSFET),and the MC33262 power factor control chip.The circuit reduces the turn-off lossse of the MOS tube,improves the power factor of the power supply,Suppresses voltage and current harmonic coefficients,to improve power utilization and stability.
关键词
碳化硅(SiC)/负压关断/PFC/功率因数
Key words
SiC/negative voltage shutdown circuit/PFC/power factor
维普
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