LED headlight controller simplifies circuit design

LED headlight controller simplifies circuit design
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Infineon has introduced a dual-channel DC-DC controller for LED headlights that eliminates the need for an external microcontroller. The chip also offers numerous additional functions.
By Christoph Hammerschmidt

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LED lighting is becoming increasingly important in all vehicle segments: it increases road safety and enables new design possibilities, such as flexible styling. To meet the resulting requirements, Infineon Technologies AG is expanding its LITIX Power family with the TLD6098-2ES dual-channel DC-DC controller. The controller is the first product that can operate an LED spotlight without an additional microcontroller. It also controls the four standard functions of LED front lights: High Beam (HB), Low Beam (LB), Daytime Running Light (DRL) and Turn Signal (TURN). In addition, the LITIX Power products can be used as a power source to meet the growing demand for animated LED exterior lighting.

As a multi-topology controller, the TLD6098-2ES enables boost, buck, SEPIC and flyback topologies. The integrated PMOS gate drivers provide high-side load shutdown to dim LED brightness and achieve adequate system reliability. Furthermore, an integrated spread spectrum modulator improves EMC performance and facilitates system qualification at the customer site. Each channel of the TLD6098-2ES provides both analogue and PWM dimming for precise LED brightness control. Furthermore, with the wide input voltage range of 4.5 V to 60 V, even applications with 24 V battery systems are supported.

www.infineon.com/litix-power

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