This paper proposes an Electric Driver (ED) for LED headlight with Adaptive Frontlighting System (AFS) of vehicle. The ER mainly contains two parts. One is power stage and the other is control unit. The power stage is a single-stage structure, instead of multi stages, such that it can achieve high efficiency, low cost, and compact features. Even though the proposed ER is a single-stage, all LED strings can be controled individually and then, easily accomplish AFS functions. The control unit is carried out by two Microchip MCUs, which controls LED on/off, performs active switch controlling, determines LED current, functions circuit protection, and fulfills dimming feature. To verify the ER, a prototype is built, simulated, and tested. From simulations and hardware measurements, the feasibility of the proposed ED is demonstrated. Furthermore, a series of experiments, such as environmental test, protection test, and burning examination, are dealt with. The practical results proof that the ER can meet the requirements for production.
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机译：本文提出了一种用于LED前灯的电动驱动器（ED），其具有车辆的自适应前灯系统（AFS）。 ER主要包含两部分。一个是功率级，另一个是控制单元。功率级是单级结构，而不是多级，使得它可以实现高效率，低成本和紧凑的功能。即使所提出的ER是单级，也可以单独地控制所有LED串，然后易于完成AFS功能。控制单元由两个Microchip MCU进行，该MICHCHIP MCU，控制LED ON / OFF，执行有源开关控制，确定LED电流，功能电路保护，并满足调光特征。要验证ER，构建，模拟和测试原型。从仿真和硬件测量，证明了提议的ED的可行性。此外，一系列实验，例如环境试验，保护试验和燃烧检查。实际结果证明，ER可以满足生产要求。
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