Melexis MLX81334: Motor Driver Chip for EVs
June 30, 2023 - Melexis, a leading global microelectronics engineering company, has announced the launch of its latest motor driver chip, the MLX81334. This cutting-edge chip is specifically designed to optimize the performance of thermal valves and expansion valves in electric vehicles, resulting in a significant boost in their driving range. With advanced features like expanded memory and OTA support, the MLX81334 enhances Melexis' range of embedded motor driver chip products and enables the implementation of advanced software functions.
The MLX81334 is a versatile motor driver chip that operates on a LIN interface and can handle a rated current of 1A. It is well-suited for integration into electro-thermal management systems. This single-chip solution efficiently drives small DC motors, brushless DC motors, and stepper motors. Equipped with an embedded microcontroller, four FET half-bridge drivers, and data conversion circuits, the MLX81334 offers seamless communication through LIN or serial interfaces. Its 64KB on-chip memory (32KB for MLX81332) provides ample space for running complex software and enables enhanced safety diagnostics by facilitating access to critical calibration data. Additionally, the MLX81334 supports Over-The-Air (OTA) updates, ensuring easy and convenient software upgrades.
Melexis has leveraged its expertise in high-voltage insulation technology, specifically Silicon-On-Insulator (SOI), to develop this remarkable motor driver chip. The integration of exceptional operational stability and a high level of functionality within a compact form factor allows the MLX81334 to occupy minimal circuit board space, making it an ideal choice for electromechanical equipment with stringent space requirements.
The MLX81334 motor driver chip by Melexis is available in a 5mm × 5mm 32-pin QFN package, catering to both 12V and 24V automotive systems. It incorporates built-in protection mechanisms against over-temperature, over-current, over-voltage, and under-voltage conditions, ensuring the safety and reliability of the system.
"We are excited to introduce our new single-chip solution, which provides electric vehicles with more compact thermal valves," said Marc Lambrechts, Product Line Manager of Melexis' Embedded Motor Driver Chips. "By reducing material costs while maintaining excellent performance, our automotive customers can develop competitive thermal management systems. Furthermore, our experienced engineering team is readily available to provide technical support and assist customers in achieving optimal designs from the start."
In summary, Melexis' MLX81334 motor driver chip offers enhanced performance and functionality for electric vehicles, enabling improved thermal control and extending their driving range. Its compact design, along with features like expanded memory, OTA support, and built-in protection mechanisms, make it a valuable component for catering to the evolving needs of the automotive industry.
