Infineon TLD6098-1EP: A Dual-Channel Buck Controller for High-Performance Automotive LED Front Lighting

The evolution of automotive lighting, particularly the shift from halogen to Light Emitting Diodes (LEDs), has demanded increasingly sophisticated electronic control. The Infineon TLD6098-1EP emerges as a pivotal solution, engineered specifically to meet the stringent requirements of modern high-performance LED front lighting systems, including adaptive driving beam (ADB), matrix beam, and dynamic turn indicator applications.

This integrated circuit is a dual-channel switch-mode power supply (SMPS) controller that can be configured as two independent buck (step-down) converters or as a single two-phase interleaved buck converter. This flexibility allows designers to efficiently power multiple LED strings with a single chip, optimizing board space and system cost. The interleaved operation is particularly beneficial, as it significantly reduces input current ripple, minimizing electromagnetic interference (EMI)—a critical factor in the noise-sensitive automotive environment.

A core strength of the TLD6098-1EP lies in its high-precision current regulation. Each channel can regulate the LED current with exceptional accuracy, ensuring uniform light output and consistent performance across all operating conditions. This is vital for safety-critical functions like headlights, where flickering or dimming is unacceptable. The device supports both analog and PWM dimming over a wide frequency range, enabling seamless brightness adjustment for daylight running lights or complex, dynamic light patterns for advanced ADB systems.

Designed for the rigors of the road, the TLD6098-1EP boasts robust protection features and is qualified for AEC-Q100 Grade 1 automotive applications. It can operate over a vast input voltage range (4.5 V to 42 V), effortlessly handling load-dump conditions and cold-crank scenarios. Integrated safeguards include over-voltage, over-current, and over-temperature protection, ensuring long-term reliability. The synchronization capability with other TLD6098-1EP devices allows for the scalable control of even more channels, making it suitable for the most complex lighting architectures.

ICGOODFIND: The Infineon TLD6098-1EP stands as a comprehensive and robust solution, masterfully addressing the power management challenges of next-generation automotive LED front lighting. Its dual-channel architecture, high efficiency, superior dimming performance, and automotive-grade robustness make it an indispensable component for designers aiming to create brighter, smarter, and safer vehicle lighting systems.

Keywords:

Automotive LED Lighting

Dual-Channel Buck Controller

Current Regulation

AEC-Q100

PWM Dimming