True 3D Hall Effect Position Sensor with Stray Magnetic Field Compensation

Chen Xingpeng, Application Department Manager of TDK-Micronas, said that nowadays, the market's requirements for magnetic field sensors are increasing, especially the requirement for stray magnetic field compensation, which brings new challenges to the design of magnetic sensors. At the same time, people's requirements for autonomous driving functions, higher functional safety requirements and the growing demand for digital interfaces call for a new type of sensor with more functions and higher flexibility. In view of this, TDK has launched a unique 3D Hall effect position sensor with stray magnetic field compensation and flexible structural design.

Magnetic field sensors, especially Hall effect sensors, are widely used in industrial and automotive electronics fields. The main reason for this is that they cost-effectively integrate many additional functions. In recent years, in addition to Hall effect switches and one-dimensional sensors, more and more two-dimensional/three-dimensional sensors have been designed and applied to advanced automotive electronics. These sensors can well meet the growing demand, for example, the higher safety requirements for autonomous driving applications in ISO 26262. In addition, modern vehicles have more and more high-precision controlled actuators, which can provide digital interfaces (such as SENT, SPI and PSI5), low-power modes and 3D capabilities.