제어로봇시스템학회:학술대회논문집

제어로봇시스템학회 (Institute of Control, Robotics and Systems)
권호 표지

Design for reduction EMI of flyback switching power supply

  • Theirakul, Chaivat (Control Engineer Department, Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’s Institute of Technology Ladkrabang) ;
  • Prempraneerach, Yothin (Control Engineer Department, Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’s Institute of Technology Ladkrabang)
  • 발행 : 2003.10.22
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Switch-mode power supplies (SMPS) have become a major source of conducted electromagnetic interference (EMI) which is the combination between differential mode (DM) noise and common mode (CM) noise. This paper presents the conducted EMI reduction approach in flyback switched mode power supply by rerouting for circuit balance to reduce common mode noise. And differential mode noise can be reduce by adding $c_x$ capacitor across the input power line, and passive element to the gate drive of switching device MOSFET to slow down the switching times. This combination of our approach is the effective way to reduce the conducted EMI and it is also a cost effective for product design

키워드