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The MLX81205-06-07-08 are members of a highly integrated 3-phase motor controller IC family for 12V automotive applications. The family includes versions in different pin counts and packages. It follows the Melexis high integration concept by putting a 16-bit-Flash-Microcontroller, voltage regulator, LIN-protocol, Power-FET-Gate-Driver and several blocks for BLDC motor operation in one single IC.

The chip family supports sensorless and sensor based BLDC motor operation. And it addresses mainly permanent running BLDC motors that can be found in pumps, blowers and fans, but also positioning BLDC actuators can be supported. Additionally, this family follows the TruSense sensorless BLDC motor control technology.

TruSense technology

The TruSense technology combines reluctance measurements with back electro-motive force (BEMF) sensing, yielding highly accurate rotor position information in a very wide dynamic range and under heavily changing loads. Because of that, also very demanding applications operating under unknown torque as transmission oil pumps can be controlled in a sensorless way.

The PWM driving scheme might be adapted to any motor current shape, achieving the best possible efficiency, low torque ripple and minimal conducted and radiated emissions.

TruSense also allows a very fast motor start-up as well as operation at very low speeds. TruSense supports block mode commutation, trapezoidal and sinusoidal motor currents and achieves a low noise performance.

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Top features

  • Very robust

  • Wide dynamic range

  • Fast start-up, accelerate and run under unknown load conditions

  • Low noise operation

  • Trapezoidal motor drive or FOC SineDrive

  • Delta and star motor configuration (no star point required)

  • Embedded Flash controller for high temperature environment, 32K or 64K memory, UDS bootloading support

  • Voltage regulator

  • RC clock oscillator

  • NFET predriver with bootstrap and VDS monitor

  • Integrated LIN or PWM protocol

  • Flash programming on module level via 1-pin LIN or PWM interface

  • AEC-Q100 grade 0 qualified up to 150 °C ambient temperature up to max Tj = 175 °C
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Sensorless BLDC motor controller IC (gen II) - MLX81205-06-07-08

Features and benefits

  • Very robust

  • Wide dynamic range

  • Fast start-up, accelerate and run under unknown load conditions

  • Low noise operation

  • Trapezoidal motor drive or FOC SineDrive

  • Delta and star motor configuration (no star point required)

  • Embedded Flash controller for high temperature environment, 32K or 64K memory, UDS bootloading support

  • Voltage regulator

  • RC clock oscillator

  • NFET predriver with bootstrap and VDS monitor

  • Integrated LIN or PWM protocol

  • Flash programming on module level via 1-pin LIN or PWM interface

  • AEC-Q100 grade 0 qualified up to 150 °C ambient temperature up to max Tj = 175 °C

Videos

Embedded motor driver ICs family

Product

This video gives an introduction to the Melexis Embedded Motor Drivers’ portfolio for low to high power DC or BLDC motor applications.

Inspired Engineering