Melexis announces a new second-generation resolver motor position sensor based upon its proprietary Triaxis Hall magnetic sensing technology. The new single IC solution MLX90380 is compatible with any brushless motor - including Permanent Magnet Synchronous Motors (PMSM) and Brushless DC Motors (BLDC) - thanks to its ability to measure the absolute angle. It is ideally suited to the ever-growing number of automotive applications arising as a result of the greater electrification of vehicles.
The precision sensor is suitable for high-speed rotating applications, such as automotive electrical power steering motors and superchargers, due to its 2μs sampling and 8μs output refresh rates. The MLX90380 provides Sine and Cosine analog ratiometric outputs while other options include the ability to select sensitivity from 10mT to 70mT and three different configurations for the magnetic field axis. Unique to the MLX90380 is its ability to be mounted in either end-of-shaft or through-shaft applications. By simply selecting the correct option code, designers are now able to measure rotation and position at any point along a shaft by using a ring magnet in conjunction with the MLX90380.
The MLX90380 operates from -40°C to +150°C, making it ideal for harsh applications such as industrial and automotive. The standard version is available in a small SOIC-8 package and a fully redundant version is provided in a SOIC-16 package. For PCB-less applications, such as direct mounting in a motor, a DMP-4 package is available. ISO26262 documentation is available to support safety-critical automotive applications.