Motor driver cuts material costs in automotive mechatronic applications

04-12-2020 | Melexis | Power

Melexis offers the third generation of its LIN driver for small motors aimed at automotive mechatronic applications at up to 10W, including motor-controlled flaps and valves, and small fans and pumps.

The Gen 3 MLX81330 (0.5A motor drive) and MLX81332 (1A motor drive) smart LIN drivers are based on high-voltage SOI technology to provide high levels of robustness and function density, integrating analog and digital circuitry to produce true single-chip solutions that are fully compliant with the industry-standard LIN 2.x/SAE J2602 and ISO 17987-4 specifications for LIN slave nodes.

With their ‘all-in-one’ approach to LIN slave design, the devices provide a reduced BoM, smaller PCB, simpler product design and faster assembly. For example, the MLX81332 interfaces directly with an ECU and can drive up to four phases of a motor, with a maximum current of 1A per phase, or two phases with a maximum current of 1.4A. This means it can drive a two-wire DC motor, three-wire BLDC motor or four-wire bipolar stepper motor, employing either sensored or sensorless FOC algorithms.

The embedded motor controller ICs are developed for safety applications according to ASIL-B (ISO 26262).

The smart LIN drivers are offered with software that incorporates the LIN communication stack.

By Natasha Shek