TI公司的TPS9263x-Q1是具有模拟和PWM调光控制的三门路性LED驱动器,每路LED驱动电流高达150mA,输出可并联以到达450mA,每路的精度在±1.5%-±2.5%,输入电压5V-40V,符合AEC-Q100尺度,主要用在汽车LED照明如白天驾御灯,位置灯,雾灯,后灯,起停灯和内部照明.本京电港论坛文章先容了TPS92630-Q1主要特点,框架图,典范应用以及TPS92630-Q1评估模块(EVM)主要特点,电路原理图纸,质料清单和PCB线路板元件和铜线结构图. 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. A single-LED short comparator allows detection of single LED failing with a short circuit. Fault output can support bus connection topology between multiple ICs. The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. One can program the temperature threshold through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP terminal to ground. Output of the junction temperature as an analog voltage is available as a factory program option. TPS92630-Q1主要特点: Qualified for Automotive Applications TPS92630-Q1应用: • Automotive LED Lighting Applications, Such As: TPS92630-Q1评估模块(EVM) The Texas Instruments TP92630EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPS92630-Q1. The TPS92630-Q1 is a three-channel linear LED driver with independent PWM dimming control. It is designed and well suited for driving multiple strings of red LEDs or a single string of white LEDs up to a medium power range. The TPS92630-Q1 IC is capable of operating at input voltages up to 40 V. Due to thermal considerations, the EVM may not allow an input voltage this high. TPS92630-Q1评估模块(EVM)主要特点:
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