Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.10c
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- Pages.182-185
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- 2005
A high efficiency 200W Adaptor with new voltage-current driven synchronous rectfier
전압전류 혼합 구동방식의 동기정류기를 이용한 200W급 고효율 AC Adaptor에 관한 연구
- Won, Ki-Sik (Dept. of Electronics Eng, Cheongju University) ;
- Lee, Darl-Woo (Dept. of Electronics Eng, Cheongju University) ;
- Ahn, Tae-Young (Dept. of Electronics Eng, Cheongju University) ;
- Kim, Sung-Cheol (Samsung Electro-Mechanics Co, LTD) ;
- Jang, Chan-Gyu (Samsung Electro-Mechanics Co, LTD) ;
- Kim, Young-Joo (Samsung Electro-Mechanics Co, LTD)
- 원기식 (청주대학교 전자공학과) ;
- 이달우 (청주대학교 전자공학과) ;
- 안태영 (청주대학교 전자공학과) ;
- 김성철 (삼성전기(주) RF사업부 Power개발팀) ;
- 장찬규 (삼성전기(주) RF사업부 Power개발팀) ;
- 김용주 (삼성전기(주) RF사업부 Power개발팀)
- Published : 2005.10.20
Abstract
This paper presents a new voltage current driven method for the synchronous rectifier (SR) in a flyback topology. The proposed synchronous rectfier of voltage-current driven can operate at wide load range with high efficiency. The gate voltage of FET in the synchronous rectifier is easily controlled by resistor ratio. regardless of line and load fluctuation. The 200W (l2V/17A) prototype is built and achiveved efficiency as high as 90% at 4A, 93.2% at 7A and full load.
Keywords