Precision software solutions for front car lights .

Challenge: Ensuring robust software and hardware integration 

The customer needed assistance in implementing and verifying software on a new headlamp hardware (PCB board). The tasks included checking power and temperature conditions, implementing software protections, and ensuring communication between the light module and car ECU. 

Solution: Comprehensive design and verification 

Endego provided a complete solution by designing, verifying, and configuring key hardware and software components. We implemented and tested the following: 

• Boost converter (LM5122): Ensured a stable 36V power supply through hardware design and testing. 
• Programmable current sources (TPS92518): Designed and configured for optimized power management. 
• SPI communication driver: Implemented a driver to manage communication across the system. 
• LED matrix drivers (TPS92664): Designed and configured programmable drivers for matrix control. 
• Gaussian brightness distribution: Implemented across the LED matrix to ensure the desired light beam. 
• CAN FD communication: Verified communication between hardware and software. 
• Dynamic power derating: Implemented protection from overheating through real-time current and temperature management. 
• External cooling fan control: Designed hardware control for an auxiliary cooling system. 

Technologies 

• ASPICE, Embedded C, CAN_FD, SPI, UART, ADC, Boost DC-DC Converters, Programmable Current Sources. 

Endego’s innovative solutions ensured a seamless hardware-software integration by addressing key aspects of the front car lighting system. Through the use of automotive protocols like CAN FD, SPI, and programmable current sources, we optimized both power management and communication between the light module and the car’s ECU. Dynamic testing allowed us to configure thermal protections, such as dynamic power derating, ensuring the system could handle temperature fluctuations. By designing and validating each component, including LED matrix drivers and external cooling controls, we provided robust protection and maintained optimal performance, even under demanding conditions. 

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