TI TPS9263x－Q1三路汽车LED驱动和调光解决方案
TI公司的TPS9263x－Q1是具有模拟和PWM调光控制的三路线性LED驱动器,每路LED驱动电流高达150mA,输出可并联以达到450mA,每路的精度在±1.5%－±2.5%,输入电压5V－40V,符合AEC－Q100标准,主要用在汽车LED照明如白天驾驭灯,位置灯,雾灯,后灯,起停灯和内部照明.本文介绍了TPS92630-Q1主要特性,框图,典型应用以及TPS92630-Q1评估模块(EVM)主要特性,电路图,材料清单和PCB元件和铜线布局图.
The TPS9263x-Q1 devices are three-channel linear LED drivers with analog and PWM dimming control. Their full-diagnostic and built-in protection capabilities make them the ideal solution for variable-intensity LED lighting applications up to the medium-power range.
The design of this device suits it well for driving LEDs configured as a single string or multiple strings within its power capability. A single device can drive up to three strings with one to three LEDs in each string at a total current of up to 150 mA per channel. Outputs can be paralleled to provide higher current drive capability to 450 mA.
In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED strings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.
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