英飞凌+安森美的自适应前照灯系统方案

为减少夜间交通事故，自适应前照灯系统 (AFS) 作为主动安全系统可以感应路况和车辆方向。根据传感数据，AFS ECU驱动车灯步进电机优化照明模式，显著提高驾驶员夜间能见度。安富利汽车设计中心结合英Infineon TLE4729和AMIS3062X推出自适应前照灯系统方案。

An AFS consists of the cooperative operation of right and left headlamps and levelizers and other units, by sharing vehicle speed and steering wheel angle information.     
 

The AFS system communication with Car system via CAN bus, the LIN bus connect the master module and slave module. The slave module is integrated since the AFS is installed in the engine compartment, a wide operating temperature range of -40 degrees C to 125 degree C is required.

Solution Specification

·Contain horizontal and vertical adjust
·High integrated driver with MCU function
·World famous auto factory Spec features
·MCU, Driver and Transceiver or Single Chip Solution could be selection

Infineon TLE4729 Features  

·Integrated driver, control logic and current control
·Very Low current consumption in inhibit mode
·Fast free wheeling diodes
·Max. supply voltage 45V
·Output stages are free of crossover current
·Offset-phase turn-on of output stages
·All outputs short-circuit proof
·Error-flag for overload, open load, over temperature


AMIS3062X Features
 
·Sensorless step-loss detection
·Fixed frequency PWM current control
·Automatic selection of fast and slow decay mode
·No external fly-back diodes required
·Configurable speeds, and acceleration
·Full diagnostics and status information LIN interface
·Over-current, under voltage, open circuit protection
·Motion qualification mode
·Field programmable node