Melexis’ integrated solution for automotive actuation applications

Melexis, a global microelectronics engineering company, announces a new integrated sense and brushed motor drive solution that is primarily intended for automotive automation applications such as seat movement, window lift and sun roofs. The two-IC solution has the ability to integrate sensing directly into the drive electronics, thereby simplifying and shortening the design task for engineers designing low cost, high performance automotive solutions.

 The MLX81325 is an integrated smart motor pre-driver with Local Interconnect Network (LIN) capability and a protocol controller, housed in a tiny QFN32 32-pin 5mm x 5mm package which enables fine PowerFET control for efficient, low noise brushed motor drive with smooth start and stop. The integrated solution contains four FET PWM pre-drivers, 32k Flash memory and 16k ROM. There are various diagnostic functions built in and current sense enables intelligent anti-pinch protection. A total of eight I/O lines allow direct connection of Melexis position sensors, simplifying the system design – especially the provision of self-learning soft-stop features.

The companion mixed signal CMOS-based MLX92255 is a second-generation dual Hall-effect latch with two speed outputs and an onboard voltage regulator. Each Hall sensor offers advanced offset cancellation and two open drain output drivers and the whole device is packaged in a small 5-pin TSOT package measuring just 2.75mm x 2.90mm.

Commenting on the new release, Marc Lambrechts, Product Manager for Embedded Motor Drivers at Melexis, said: “When selecting automotive solutions designers are looking for a compact and highly integrated solution that will allow them to deliver the required functionality with minimal design effort and at a low cost. Combining our experience in sensing with motor drive technology has allowed us to meet that need with this solution. Furthermore, our advanced development kits and software debuggers significantly ease the development task for new and experienced designers.”

About Melexis

Combining a passion for technology with truly inspired engineering, Melexis designs, develops and delivers innovative micro-electronic solutions that enable designers to turn ideas into applications that support the best imaginable future. The company’s advanced mixed-signal semiconductor sensor and actuator components address the challenges of integrating sensing, driving and communication into next-generation products and systems that improve safety, raise efficiency, support sustainability and enhance comfort.

 A world leader in automotive semiconductor sensors, Melexis has used its core experience in creating chips for vehicle electronics to expand its portfolio of sensors, driver ICs and wireless devices to also meet the needs of smart appliances, home automation, industrial and medical applications. Melexis sensing solutions include magnetic sensors, MEMS sensors (pressure, TPMS, infrared), sensor interface ICs, optoelectronic single point and linear array sensors and Time of Flight. The company’s driver IC portfolio incorporates advanced DC & BLDC motor controllers, LED drivers and FET pre-driver ICs, while Melexis has the know-how and expertise to build bridges between components, allowing them to communicate in a clear and fast way, whether wired (e.g. LIN, SENT) or wireless (RKE, RFID).

 Melexis is headquartered in Belgium and employs over 1,100 people in 19 locations worldwide. The company is publicly traded on Euronext Brussels (MELE).

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