For applications requiring configuration flexibility, the MLX81339 offers Flash programmability without compromising on a small footprint. Designed for implementations of three-phase BLDC motors or bipolar stepper motors, these controllers utilize quiet and efficient field-oriented control (FOC) and ensure reliable starting and stopping, as well as precise speed control from minimum to maximum.
To support motor configuration, the Melexis StartToRun web tool streamlines motor controller prototyping, eliminating significant engineering tasks by generating configuration files based on simple user inputs. In addition to electrical and motor parameters, the tool includes pre-defined mechanical values, helping engineers accelerate time to market and reduce reliance on software expertise.
The device supports control of up to 20 W at 12 V and 40 W at 24 V, and integrates a three-phase driver with a configurable current limit of up to 3 A and protection against undervoltage, overvoltage, overcurrent, and overtemperature to ensure reliable operation. The compact QFN24 and SO8-EP packages enable compact PCB designs, supporting the trend toward smaller, more integrated systems, while the wide supply voltage range of 6 V to 26 V and operating temperature range of -40 °C to 125 °C (junction temperature up to 150 °C) further facilitate system integration.
With broad output compatibility, the devices include eight general-purpose I/O pins and feature PWM, FG, I²C, UART, and SPI interfaces for easy integration into both legacy and smart systems. Supporting both sensor-controlled and sensorless operation, the integrated circuit (IC) ensures quiet and robust motor operation, functioning reliably during load transients and fault recovery, preventing the unexpected restarts common in less sophisticated controllers. Applications span the smart industrial and consumer sectors, including positioning motors, thermal valves, robotic actuators, residential and industrial ventilation systems, and dishwasher pumps. Automotive fans and blowers are also supported thanks to the MLX81339's automotive certification.
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