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1. 发明授权

US08097976B2 Lighting controller for a vehicle lamp 失效
标题翻译：车灯用照明控制器
公开(公告)号：US08097976B2
公开(公告)日：2012-01-17
申请号：US12364559
申请日：2009-02-03
申请人： Takayoshi Kitagawa , Yasushi Noyori , Masayasu Ito
发明人： Takayoshi Kitagawa , Yasushi Noyori , Masayasu Ito
IPC分类号： B06L1/14
CPC分类号： H05B33/089
摘要： A lighting controller has current driving means which include a shunt resistor connected in series to each of multiple LEDs to detect an LED driving current, a PMOS transistor connected to the positive electrode side of each of the LEDs, and an amplifier for sending an output according to the result of comparison between the respectively detected driving current values and a reference value, and which subject each of the PMOS transistors to ON/OFF operation. Control means includes a Zener diode ZD1 and a Zener diode ZD2 for detecting an abnormality occurring in the current driving means and for sending the abnormality detection result. The control means controls the PMOS transistor to be turned OFF after elapse of a predetermined time upon receipt of the abnormality detection result.
摘要翻译：照明控制器具有电流驱动装置，其包括与多个LED中的每一个串联连接的分流电阻以检测LED驱动电流，连接到每个LED的正极侧的PMOS晶体管和用于发送输出的放大器相对于分别检测到的驱动电流值和参考值之间的比较结果，以及将每个PMOS晶体管导通到ON / OFF操作的结果。控制装置包括齐纳二极管ZD1和齐纳二极管ZD2，用于检测在当前驱动装置中发生的异常并发送异常检测结果。控制装置在接收到异常检测结果之后经过预定时间后控制PMOS晶体管被关断。

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