Design of an LED driver based on hysteretic-current-control mode in a 0.6μm BCD process  

作　　者：刘帘曦 朱樟明 杨银堂 

机构地区：[1]Institute of Microelectronics,Xidian University,Xi'an 710071,China

出　　处：《Journal of Semiconductors》2012年第4期105-110,共6页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.61006028);the Xi'an Applied Materials Innovation Fund, China(No.XA-AM-201010);the National Science Fund for Distinguished Young Scholars,China(No.60725415)

摘　　要：Based on the 0.6/zm BCDMOS process a hysteretic-current-control mode white light LED drover wltla high accuracy and efficiency is presented. The driver can work with a 6-40 V power supply, the maximum output current is up to 1.0 A, the maximum switching frequency is up to 1 MHz, the output current error is less than ±5%, and the efficiency is greater than 80%. The circuit details of the high-side-current sensor and high-speed comparator, which greatly affect the accuracy of the whole driver, are emphasized. Then, the simulation and test results of this work are presented.Based on the 0.6/zm BCDMOS process a hysteretic-current-control mode white light LED drover wltla high accuracy and efficiency is presented. The driver can work with a 6-40 V power supply, the maximum output current is up to 1.0 A, the maximum switching frequency is up to 1 MHz, the output current error is less than ±5%, and the efficiency is greater than 80%. The circuit details of the high-side-current sensor and high-speed comparator, which greatly affect the accuracy of the whole driver, are emphasized. Then, the simulation and test results of this work are presented.

关 键 词：hysteretic-current-control output-current error high-side-current sensing high-speed comparator 

分 类 号：TN312.8[电子电信—物理电子学]