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Determination of the operating frequency of flyback quasi-resonant switching power supply and development of power supply

  • 2014-03-05
  • 269.43KB
  • Points it Requires : 2

摘要:采用ONSEMI公司的NCP12系列芯片制成了准谐振(QR)零电压切换(ZVS)电源.介绍了用准谐振技术使反激式开关电源获得的零电压切换效果,详细讨论了该电源工作频率的确定方法,给出了所研制电源的电路及其工作波形.由电路波形及测量数据看出,改进后的电路开关损耗显著降低,取得了较好的效果.关键词:电源;脉宽调制/准谐振;零电压切换

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