Melexis, a global microelectronics technology company, announces the second generation of motor position sensors (resolvers) based on its patented Triaxis Hall magnetic sensing technology.
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The new MLX90380 single-chip solution can be used to measure the absolute angle of the motor and is suitable for all brushless motors including permanent magnet synchronous motors (PMSM) and brushless DC motors (BLDC). Automotive electrification has spawned a growing number of related applications, and the MLX90380 offers an ideal solution.
The sensor's 2us input signal sampling rate and 8us output signal refresh rate make it ideal for high-speed rotating electrical applications such as automotive electric power steering (EPS) and superchargers; the MLX90380 provides sine and cosine proportional to VDD The analog signal output supports a magnetic field strength working environment of 10mT to 70mT, and can configure the magnetic field in three directions of XYZ.
The MLX90380 is unique in that it can be mounted at the end of the shaft or on the side of the shaft. By simply selecting the correct product code and using the ring magnet on the rotor shaft and the side-mounted MLX90380, the designer can now measure rotor speed and position from any position on the shaft.
Peter Vandersteegen, product manager at Melexis, commented on the new MLX90380 product: "This second-generation Triaxis-based resolver shows that Melexis has taken an important step forward - especially in performance and In terms of installation flexibility, this compact device offers many options for designers to meet the challenges of tight spaces in modern applications, especially in the automotive sector, enabling designers to offer high-performance rotary angle measurement solutions."
With an operating temperature range of -40°C to +150°C, the MLX90380 is ideal for demanding applications in industrial and automotive applications. The standard version is available in a small SOIC-8 package, and the fully redundant version is available in a SOIC-16 package. For PCB-free applications such as direct mounting in motors, it is available in a DMP-4 package.
The ISO26262 document can be used to support safety-critical automotive applications.
The MLX90380 can be used with Melexis' small drive IC MLX81310 or MLX81315 to drive the motion of the smart valve and position it for effective cooling of the battery or engine. It can also be used with Melexis' BLDC motor control IC MLX81205-06-07-08 to track the rotor position of the intelligent pump for effective dynamic control of the pump with appropriate torque.