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Melexis Releases MLX81143 Automotive LED Driver Chip

Update time : 2022-10-14 17:57:40

On October 14, according to the report of Geshi Automobile, the global microelectronic engineering company Melexis announced the launch of the LED driver chip MLX81143, adding new members to the MeLiBu product series. This product integrates 21 LED constant current sources and can improve the power management of the entire system. MLX81143 has a very wide dimming range, and can achieve excellent brightness adjustment effect no matter in the day or at night. MeLiBu interface supports driving up to 3000 LEDs in the vehicle at the same time, providing dynamic safety warnings and enhancing communication between the vehicle and the driver.

At present, automobile manufacturers use dynamic lighting in their cars to convey important information such as driving aids and vehicle status updates. Color changes and various flashing sequences enhance information that requires the driver's attention. However, this also brings many challenges to engineering design, such as the need to keep all LED colors consistent and ensure that they change at the same time.
The MLX81143 integrates the Melexis CAN over UART MeLiBu (royalty free) solution to address these challenges. This high-speed communication interface can control each LED separately to achieve the lighting effect defined by the vehicle system. The intelligent RGB LED controller can also provide real-time compensation for any color deviation caused by environmental changes, and the color mixing accuracy is less than 1% to ensure that there is no significant difference between LEDs.
MeLiBu technology has been adopted by many multinational automobile manufacturers. MeLiBu communication interface is based on CAN-FD physical layer, providing stable and reliable performance at a speed of up to 2 Mbit. The combination of UART and MeLiBu (CAN-FD) protocol can realize intelligent high-resolution operation, reduce temperature related color deviation, and help to provide a consistent and non distracting user experience under various operating conditions.
MLX81143 has passed AEC-Q100 certification and reached ASIL standard. The chip meets the functional safety requirements of ISO 26262 and can reach ASIL B functional safety level. MLX81143's architecture helps designers meet EMC requirements. At the same time, the chip has low EMI radiation and high EMI interference resistance.
"MLX81143 is the third product integrated with MeLiBu launched by Melexis. This technology can realize the scalable solution of lighting system and new application functions," said Michael Bender, manager of Melexis embedded lighting product line, "This chip is a new member of the MeLiBu product family, which can drive more LEDs, so it can further reduce the number of chips required for each application. In addition, the product integrates intelligent options, which can also help customers improve their power management design."

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