ITFIND - 분석 보고서 - GreenIT
주메뉴바로가기 본문바로가기

분석 보고서 - GreenIT

Home > 보고서 > 분석보고서
facebook 공유하기 twitter 공유하기
Multi-Output LED Driver Integrated with 3-Switch Converter and Passive Current Balance for Portable Applications
IT소재부품, 해외동향, 전자정보디바이스, LED, IT부품정보, IT부품정보 네트워크, 부품, GreenIT,
사본 바로가기
This study presents a new portable eight-output light emitting diode (LED) driver. The eight output-channels are divided into two equal groups, and their output powers can be controlled individually by three active switches. In addition, a simple capacitor-based passive current balancing circuit (CBC) is employed in each port to guarantee that the currents of the four LEDs are the same. When compared with the conventionally used separate two-output isolated converters, the proposed one uses one less active switch. Moreover, zero-voltage-switching (ZVS) is achieved, which improves the power efficiency of the driver. Finally, a highly compact prototype is built, which can reach an efficiency of 94.6%.