电子器件2018，Vol.41Issue(2)：536-542,7.DOI:10.3969/j.issn.1005-9490.2018.02.050
PFM开关电源控制电路的抗电磁干扰设计
Anti-EMI Design for PFM Switched Mode Power Supply IC
摘要
Abstract
To improve Anti-electromagnetic interference level,the principle of anti-EMI for PFM SMPS IC is analyzed, and the Random Carrier Frequency Modulation(RCFM) technology is given,the implementation of RCFM circuit is proposed.Several anti-EMI technologies for power supply are listed,which include anti-EMI design for ESD structure, the method for EMI removing from power supply and anti-EMI design by using voltage detection. RCFM and other anti-EMI technologies are applied to PFM controller SX1618,which is implemented in 1 μm 40 V high voltage process,and the test result shows that the anti-EMI performance is good.关键词
集成电路设计/抗电磁干扰/随机频率调制/电源干扰/开关电源控制电路/脉冲频率调制Key words
integrated circuit design/anti-electromagnetic interference/random carrier frequency modulation/power supply interference/switched mode power supply IC/pulse frequency modulation分类
信息技术与安全科学引用本文复制引用
徐振邦,居水荣,王天赦,沈济..PFM开关电源控制电路的抗电磁干扰设计[J].电子器件,2018,41(2):536-542,7.基金项目
江苏省教育厅项目"江苏高校品牌专业建设工程一期工程(微电子技术)"(PPZY2015B190) （微电子技术）
江苏省教育厅"青蓝工程"科技创新团队项目 （）
