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 i...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.展开更多
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)
文摘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.
