[原创] TI TPS92613－Q1汽车单路LED驱动器解决方案

TI公司的TPS92613-Q1是汽车单路高边LED驱动器.是简单但强大的解决方案,为单串LED提供带全LED诊断的恒流电流.一个失效-全失效的特性能和其它LED驱动器一起工作如TPS9261x-Q1, TPS9263x-Q1和TPS92830-Q1,以提供不同的需求.TPS92613-Q1满足汽车工作的AEC-Q100规范,工作温度–40℃ 到+125℃,工作电压4.5V到40V,低静态电流和低故障模式电流,典型值为200 μA,整个结温内的电流精度为±4.6%,恒定电流有外接检测电阻调整,最大电流高达600mA,亮度控制由输入PWM占空比来进行.70 mA时的最大压降为400mV,300mA时为1.3V.LED开路和短路检测,并具有自动恢复,诊断具有可调阈值以用于低压降工作,故障总线多达15个器件,具有热关断功能.本文介绍了TPS92613-Q1主要特性,多种应用电路,以及评估板TPS92613-Q1 EVM主要特性,电路图,材料清单和PCB布局图.

With LEDs being widely used in automotiveapplications, simple LED drivers are more and morepopular. Comparing to discrete solutions, a low-costmonolithic solution lowers system-level componentcount and significantly improves current accuracy andreliability.

The TPS92613-Q1 device is a single-channel, highsideLED driver operating from an automotive carbattery. It is a simple, yet elegant, solution to deliverconstant current for a single LED string with full LEDdiagnostics. The one-fails–all-fail feature is able towork together with other LED drivers, such as theTPS9261x-Q1, TPS9263x-Q1, and TPS92830-Q1devices, to address different requirements.
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