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Analysis and Implementation of the Capacitive Idling SEPIC  

최동훈 (주식회사 대양기기)
조경현 (광운대학교 전자공학과)
나희수 (마이크로뱅크 주식회사)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.40, no.1, 2003 , pp. 39-44 More about this Journal
Abstract
As the portable electronic equipments are developed and popularized, the batteies are more important. To prolong life of the equipments, engineers demand to have batteries of high-power density and they are used to use Li-ion batteries popularly Li-ion batteries are better than conventional batteries, Ni-cd, about power density per volume and weight, but they have a fault that discharge voltage of them goes down. In order to maximize life of the Li-ion batterries, we have to use a converter which is suitable for the characteristic of Li-ion batteries. Therefore, capacitive idling SEPIC(Single Ended Primary Inductance Converter) that is derived from the SEPIC topology is proposed as a source of the Portable low-power applications. The converter has characteristics of buck-boost porformance. Besides, that makes it possible to increase the switching frequency by partial soft commutation of power switches through adding a diode and a switch. This paper is presented the characteristics, DC voltage conversion ratio, circuits of operation modes, of the converter and it is analized and implemented.
Keywords
SEPIC;
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  • Reference
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