Melexis showcases innovative sensing technology at EV Tech Expo

Melexis booth at EV Tech Expo 2019 in StuttgartAutomotive-focused demos display embedded motor drivers, current, magnetic and thermal technologies.

Tessenderlo, Belgium, 12 April 2019 - Located in the heart of the German automotive industry, EV Tech Expo exhibits the latest solutions for electrified drive-trains along the hybrid/electric (xHEV - BEV) supply chain including: chargers (on-board and infrastructure), batteries, battery management systems (BMS), thermal management systems, thermal-runaway prevention, inverters, e-motors, peripheral solutions like over-current protection, switches, cabling, connectors, etc.

Melexis will be present with a 30 m² booth showcasing our superior technologies for current, magnetic position and temperature sensors as well as embedded motor drivers solutions (fans, blowers, pumps) for the above-mentioned applications.

The Melexis booth #215 will feature multiple demonstrations together with a product novelty around the core theme of its competence in innovative solutions for automotive applications:

3-phase sensorless water pump: The MLX81325 is a family member of the Melexis gen 2 embedded motor drivers. It enables small-footprint applications to control small BLDC cooling pumps for electric vehicles with compact external NFETS to drive the motor sensorless with lowest noise, and a digital LIN interface for commands and diagnostic feedback.



1-phase 20W water pump: The MLX81330 is a family member of the Melexis gen 3 embedded motor drivers. It enables small-footprint applications to control small 1-phase water pumps with compact external PN-FETS* to drive the motor sensored with low noise at the best price/performance for local cooling in electric vehicles, and a digital LIN or I2C interface for commands and diagnostic feedback.

3-phase sensorless HVAC blower: The MLX81206 is a family member of the Melexis Gen 2 embedded motor drivers. It enables compact PCB solution to control BLDC HVAC blowers and BLDC cooling fans with external NFETS** to drive the motor sensorless in FOC mode with lowest acoustic noise in electric vehicles, and a digital LIN interface for commands and diagnostic feedback.

3-phase sensorless HVAC flap: The MLX81330 is a family member of the Melexis Gen 3 embedded motor drivers. It enables small-footprint applications to control small BLDC, DC and stepper flaps using on-chip drivers to control the motor position in sensorless FOC mode at the best price/performance with lowest acoustic noise in electric vehicles, and a digital LIN interface for commands and diagnostic feedback.

Current sensor demo for EV and HEV: Melexis shows a demonstrator displaying two major elements of electric drivetrains: DC/AC traction inverter and motor. With its versatile contact-less current sensing solutions at the interface between inverter and motor, Melexis ensures efficient and safe operation of the drivetrain.



3D magnetic cube: The 3D magnetic cube demo showcases Melexis’ Triaxis® technology with its MLX90393, using LEDs to show the movement of a permanent magnet within a 3D space. As the magnet moves, the LEDs change and follow the motion exactly. This demonstrates how Triaxis® technology provides a simple and effective solution for sensing movement in automotive applications such as gear shifters.

FIR people detection: The MLX90640 is a 32x24 pixel thermal array that uses far infrared (FIR) technology to sense temperature without physical contact. Effectively a small thermal camera on a chip, the device can detect the presence of people thanks to their body temperature. The on-booth demonstration will use the MLX90640 and a proprietary software algorithm to detect visitors at the Melexis’ booth – this technology could equally be used to detect vehicle occupants.


Melexis will be present at the EV Tech Expo 2019 in Stuttgart from 7-9 May 2019 at booth #215 where all of the above demos – and more – can be seen during the show.

(*) Power transistor switch-pair with PMOS-FET + NMOS-FET
(**) Power transistor switch with NMOS-FET


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