CAJ | 학술논문

为了增加LLC谐振变换器控制灵活性,降低驱动电路的损耗,提出了基于FPGA控制和Si8235驱动的方案；分析了LLC谐振变换器的增益特性；对载波调制隔离驱动芯片Si8235的开通和关断时间进行了测试比较,设计加速关断的优化驱动电路；实验证明,LLC谐振变换器使用FPGA+Si8235组合的控制驱动策略,使电路更加简单,能实现更快的驱动速度,提高控制灵活性和增加性能效率。
위료증가LLC해진변환기공제령활성,강저구동전로적손모,제출료기우FPGA공제화Si8235구동적방안；분석료LLC해진변환기적증익특성；대재파조제격리구동심편Si8235적개통화관단시간진행료측시비교,설계가속관단적우화구동전로；실험증명,LLC해진변환기사용FPGA+Si8235조합적공제구동책략,사전로경가간단,능실현경쾌적구동속도,제고공제령활성화증가성능효솔。
LLC resonant converter based on FPGA digital control and Si8235 driven is proposed to increase the flexibility and reduce the power loss of the driving circuit. Detailed analysis on gain characteristic of LLC resonant converter is presented. According to the test of the turn on and turn off time of the carrier modulation isolated chip Si8235 and making a comparison between them, an optimal driving circuit with cutting down turn-off time is designed and realized. The experiments show that LLC resonant converter combined with FPGA control and Si8235 driven strategy achieves simpler circuit,faster drive speed,and control flexibility and performance efficiency.