基于TLD5097EP的日行位置灯驱动电路的设计  

Design of DRL/PL Driving Circuit Based on TLD5097EP

作　　者：周金生 余鹏 潘大千 郑丽丽 ZHOU Jinsheng;YU Peng;PAN Daqian;ZHENG Lili(Technology Center,Changzhou Xingyu Automotive Lighting Systems Co.,Ltd.,Changzhou Jiangsu 213022,China)

机构地区：[1]常州星宇车灯股份有限公司技术中心,江苏常州213022

出　　处：《汽车零部件》2023年第4期25-30,共6页Automobile Parts

摘　　要：基于TLD5097EP设计了一种SEPIC拓扑结构的日行位置灯驱动电路,可实现对LED负载的恒流控制输出;同时设计了基于日行灯优先的双光控制电路,可根据不同输入分别实现日行灯与位置灯功能,并开发了一种基于分立器件搭建的外置抖频电路来实现EMC性能优化。所设计的日行位置灯驱动电路在电磁兼容性与常规电子性能试验中均表现良好,并且在实际应用中没有不良反馈,具有一定的实用性、稳定性与可靠性。A SEPIC topology driving circuit for the daytime running lamp/position lamp(DRL/PL)was designed based on TLD5097EP,which could realize the constant current control output of LED load.At the same time,a dual-light control circuit based on the priority of daily running light was designed,which could realize the functions of daily running light and position light respectively according to different inputs,and an external dithering circuit based on discrete devices was developed to optimize EMC performance.The designed driving circuit of the DRL/PL performs well in the electromagnetic compatibility(EMC)and conventional electronic performance tests,and has no bad feedback in practical applications.It has a certain degree of practicability,stability and reliability.

关 键 词：日行位置灯 TLD5097EP DC-DC转换电路 PWM调光 抖频电路 

分 类 号：TN710.2[电子电信—电路与系统]