Infineon launches high-power LED driver for headlights
Published2017.01.18 18:00Infineon Technologies has launched the LITIX Power Flex series and LITIX Power series, high-power LED driver products dedicated to automotive headlights.
These products provide flexible DC/DC driver solutions for LED systems reaching 50W or higher. They can be used in applications with various configurations, including diverse medium-power LEDs with string voltages reaching up to 55V and LEDs operating at high currents of 3A or more.
Infineon Technologies states that the LITIX Power Flex TLD5541-1QV and LITIX Power TLD5190QV are suitable not only for high-power, high-current LED applications such as lasers and LED headlamps, but also for high-efficiency power supply in LED applications operating at battery voltage. Additionally, it is possible to design cost-effective LED headlight applications for vehicle headlamps and space-constrained motorcycle handlebars.
▲ LITIX Power Flex
The TLD5541-1QV is an H-bridge DC/DC controller suitable for driving high-power LED configurations and enables reduction of PCB size. Additionally, by using optimized spread spectrum switching frequency, EMC radiation can be reduced to meet EMC requirements.
Furthermore, the TLD5541-1QV includes protection functions and an SPI interface, and supports both analog and digital (PWM) dimming. The switching frequency is adjustable from 200kHz to 700kHz. The adjustable soft-start function limits current peaks and voltage overshoot during startup.
The DC/DC converter and controller product family of the LITIX Power series is suitable for medium-power to high-power applications including LED daytime running lights and LED low beam/high beam. The TLD5190QV is a synchronous H-bridge DC/DC controller with similar functionality to the TLD5541-1QV. However, since it is a product with the SPI interface removed, it is suitable for LED control that does not require a microcontroller, making implementation easier. This product also integrates protection functions, supports both analog and digital (PWM) dimming, and the switching frequency is adjustable from 200kHz to 700kHz.
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