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[原创]Maxim MAX25608 12开关高亮LED矩阵管理器解决方案

关键词:汽车电子 LED驱动器 汽车照明 Maxim MAX25608

时间:2021-11-12 13:50:23       来源:中电网

Maxim公司的MAX25608是12个开关的高亮LED矩阵管理器,用于汽车前灯照明应用,包括12个开关阵列,用来旁路单串或双串的单个LED.具有12个单独控制的N沟MOSFET开关,额定电压14V,导通电阻0.06Ω.单电流源可用来给所有串联连接的LED供电.单个LED通过垮接LED的旁路开关的开和关进行调光.器件可以两种串接应用进行配置,每串串联6个开关.每个开关能连接一个,两个或三个串联的LED.也可以并联两个开关,以得到大电流LED.器件还包括内部电荷泵,用来给LED旁路开关的栅极驱动提供电源.MAX25608还具有串行外设接口(UART),用来串行通信.通过串行接口,每个开关能完全打开,完全关断,或有变暗过度的调光或没有变暗过度的调光.器件具有LED开路保护和LED开路与短路故障报告.器件具有可编程12为PWM调光,满足AEC-Q100汽车规范.器件采用28引脚TSSOP封装.主要用在汽车矩阵LED系统和自适应驱动光束灯.本文介绍了MAX25608主要优势和特性,简化框图和典型应用电路图以及评估系统MAX25608 EVS主要特性,电路图,材料清单和PCB设计图.

 

The MAX25608 12-switch matrix manager IC for automotive lighting applications includes a 12-switch array for bypassing individual LEDs in a single or dual string application. It features twelve individually controlled n-channel MOSFET switches rated for 14V with an on-resistance of 0.06Ω. A single current source can be used to power all the LEDs connected in series. Individual LEDs can be dimmed by turning on and off the bypass switches across each LED. The device can also be configured in two string applications with six switches in series per string. Each switch can be connected across one, two, or three LEDs in series. It also allows for parallel connection of two swi..

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