Based on NXP S32K144 + TI TPS92662-Q1 Automotive Solution

In today's society, there are more and more vehicles on the road, which undoubtedly makes the traffic environment complicated, and traffic accidents are also frequent.

With the development of technologies such as machine vision, complex sensing and array light sources, as well as the market demand for intelligent driving assistance functions, the adaptive high beam system - ADB (Adaptive Driving Beam) came into being. The rise of adaptive high beam is a new era of automotive lighting system. European and Japanese automakers, Tier 1 suppliers and light source technology providers have begun to flock to the emerging Adaptive High Beam (ADB) market. Adaptive high beam (ADB) is an intelligent high beam control system capable of adaptively changing the high beam light pattern according to road conditions.

The ADB system automatically turns on or off the high beam for the driver based on the vehicle's driving status, environmental status, and road vehicle status. At the same time, according to the vehicle position in the front view of the vehicle, the adaptive change of high beam light type to avoid dazzling other road users.

The automotive vehicle anti-glare adaptive high beam system (ADB) solution based on NXP S32K144 + TI TPS92662-Q1 uses a matrix headlamp to automatically turn on or off the high beam for the driver.

Hardware design:

MCU Board: NXP S32K144 is used as Lighting ECU Microcontroller, which is connected to BCM and other ECUs through CAN bus on one hand, and uses UART with CAN physical layer to communicate with TI LED Matrix Manage TPS92662-Q1 on the other hand.

• ·ARM Cortex-M4 up to112Mhz;
• ·Flash/RAM - 512 KB / 64KB;
• ·Rich peripheral resources: 4 × 16bit timer, 1 × 32bit LP timer, RTC, 4 x LPSPI (with 1 emulated SPI by Flex IO), 4 x LPUART, 3 x FlexCAN, 2 x16 (12-bit) ADC Function Safety ASIL-B

ADB Board: Using TI TPS92662-Q1 as LED Matrix Manage, a single one can control up to 12 LEDs independently, the solution uses two TS92662-Q1, each IC with 8 CREE automotive-grade LEDs, a total of 16 LEDs.

-Input voltage range: 4.5 V to 60 V

-Four substrings of three series switches (12 LED Max)

- Multi-Drop UART communication interface

-Compatible with CAN physical layer

- Crystal Oscillator Driver

-External EEPROM I2C interface

Programmable 10-bit PWM dimming

- LED open and short circuit detection and protection

-AEC-Q100 compliant for automotive applications

POWER Board: Using TI LM5122 with TPS92518HV-Q1 BOOST+BUCK dual-stage architecture as LED driver and TI TPS54260-Q1 to provide 5V power supply for MCU and LED Matrix Manage.

Vision Processing Board: NXP S32V MPU with 720p camera is used to realize the vision processing function. The vision captured by the camera is transmitted to the NXP S32V chip for processing, and the algorithm converts the vision information into luminance information, and finally the ADB Board analyzes and processes the received luminance information to issue commands to turn off the lights in the area with cars ahead.

S32V234 is Cortex-M4 + quad-core Cortex-A53, ISO26262 certified, with automotive safety rating up to ASIL-B

-APEX2 professional image processor with 512KB of simultaneous data processing

-Includes GPU to run 360° panoramic surround view algorithms

-Built-in HDR ISP for up to 8 simultaneous camera access

Solution Schematic Design:

Solution Layout Design:

►Scene Application Diagram

►Display board photo

►Core technology advantage

l can cooperate with lens to control the light of 15 dark areas in front l realize specific lighting effects, such as flowing light effect, etc. l High beam automatic opening: when the speed exceeds a certain value at night, the high beam will be opened automatically l cooperate with front camera and ADAS to realize High beam light selective avoidance, so that the other car, the car in front, pedestrians, objects from the encroachment of high beam

►Specifications

Solution adopts modular design, divided into three parts MCU Board, Power Board, ADB Board, easy for customers to disassemble the development l using 24 LEDs, each LED can be independently controlled its brightness and darkness l ADB Board with The ADB Board is equipped with a special headlight lens to show customers the actual matrix headlight effect in mass production level. l AEC-Q100 compliant.