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LED-TV用 전원장치에 적합한 자동 권선형 고주파 공통 모드 초크의 특성 해석에 관한 연구
- LED-TV用 전원장치에 적합한 자동 권선형 고주파 공통 모드 초크의 특성 해석에 관한 연구
- Translated Title
- A Study on the Characteristics Analysis of High Frequency Common-Mode Choke with the Winding Method of Automatic Type suitable for LED-TV SMPS
- 박동한; 배준형; 이영재; 박광서; 김해준; 김영우; 원재선; 김종해
- Issue Date
- 조명.전기설비학회논문지, 31(5), 33-44
- HFCM choke; EMI Filter; Parasitic Capacitance; Automatic-winding type; Resonant frequency
- This paper presents the high frequency common mode (HFCM) choke with the winding method of automatic type capable of EMI attenuation of high frequency band / used in the EMI filter of LED-TV SMPS without PFC block. The high frequency common mode choke with the winding method of automatic type proposed in this paper can not only reduce the parasitic capacitance(Cp), but also ensure the uniformity of electrical characteristics by adopting the winding methods of multi-section bobbin and automatic types, compared to the conventional high frequency common mode choke with the winding method of manual type. The first resonant frequency of the proposed CM choke tends to increase as the parasitic capacitance becomes small and its impedance characteristics improved performance as the first resonant frequency increases, especially in the high frequency bands. The high frequency common mode choke (Cp) with the winding method of automatic type proposed in this paper shows that in the future, the method may have practical use in LED/OLED-TV SMPS and in several applications, such as LED Lighting, Laptop Adapter, and so on.
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- ETC1. Journal Articles
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