固体电子学研究与进展
固體電子學研究與進展
고체전자학연구여진전
RESEARCH & PROGRESS OF SOLID STATE ELECTRONICS
2010年
1期
134-138
,共5页
电荷泵%效率%1.33X模式
電荷泵%效率%1.33X模式
전하빙%효솔%1.33X모식
charge pump%efficiency%1.33X mode
设计了一种用于LED驱动的高效1.33X/1.5X/2X电荷泵电路,可以根据输出电压的变化,自适应地切换工作模式.以提高电荷泵的转换效率为切入点,从降低电荷泵升压倍数和减小电荷泵自身功耗两个方面对电荷泵的效率进行了优化设计.从仿真与测试结果可以看出,1.33X模式的转换效率比传统的1.5X模式提高了10%左右,最高效率可达86%.
設計瞭一種用于LED驅動的高效1.33X/1.5X/2X電荷泵電路,可以根據輸齣電壓的變化,自適應地切換工作模式.以提高電荷泵的轉換效率為切入點,從降低電荷泵升壓倍數和減小電荷泵自身功耗兩箇方麵對電荷泵的效率進行瞭優化設計.從倣真與測試結果可以看齣,1.33X模式的轉換效率比傳統的1.5X模式提高瞭10%左右,最高效率可達86%.
설계료일충용우LED구동적고효1.33X/1.5X/2X전하빙전로,가이근거수출전압적변화,자괄응지절환공작모식.이제고전하빙적전환효솔위절입점,종강저전하빙승압배수화감소전하빙자신공모량개방면대전하빙적효솔진행료우화설계.종방진여측시결과가이간출,1.33X모식적전환효솔비전통적1.5X모식제고료10%좌우,최고효솔가체86%.
A high efficiency 1.33X/1.5X/2X charge pump circuit for LED driver is designed,which can automatically covert working mode with the change of output voltage. This paper is based on the efficiency improvement of the charge pump, which can be optimized through decreasing the times of the voltage and minimizing the power dissipation of the charge pump. From the result of stimulation and test, it could be known that the maximum efficiency of 1.33X mode is up to 86%, which is 10% higher than that of the traditional 1.5X mode.
