TDK TMR angle sensor guide: covers principles, usage & selection. Discover our industry-leading accuracy, ASIL reliability & stability for compact, high-speed designs.

Degradation of accuracy due to stray-field noise is a common problem for magnetic field sensors. Securing a distance between the source of stray field and the sensor, or placing a magnetic shield, are major restrictions on design and lead to higher system costs. In addition, it was difficult to select an appropriate design while adjusting the balance between compensation effectiveness and cost. As a solution, TDK proposes a method of suppressing magnetic stray-fields using multiple sensors. In the "summary of compensation measures" below, the effect of stray field is compensated by using the output difference of two sensors that output opposite phases to the magnetic field signal. By selecting the number of sensors to be used, rational countermeasures can be selected while considering the expected stray field and allowable angular error.

As environmental awareness grows and the realization of a sustainable society becomes increasingly important, the mobility market is witnessing an active movement towards “EV adoption," aiming to transition from gasoline-powered to electric-powered motor vehicles. In order to realize higher performance electric vehicles (EVs) and electric motorcycle, next-generation electric motor technology that balances factors such as high efficiency, high reliability, compactness, light weight, and cost performance at a high level is required.
 
In this article, we make a comparison of angle sensor technologies responsible for detecting rotational angles in traction electric motor (hereafter referred to as e-motor) control and explain how our TMR angle sensors enhance your design.

The technology that delivers the metaverse will build on the technology for virtual reality, using more sensors, and more different kinds of sensors. TDK has one of the richest sensor portfolios in the industry, extensive software expertise, and excels at sensor fusion.

【How electrification and autonomous driving are expanding the role of sensor technologies within automotive designs】

The automotive production landscape is changing. The proliferation of electronic devices and sensors in modern car design has grown exponentially in recent years. It will expand further as the industry continues its transition toward e-mobility and autonomous driving. The core technologies featured in electric vehicles expand the realm into which sensors are deployed. Also, combustion engine vehicle gas sensors have shifted away from exhaust gas monitoring toward internal air quality (IAQ) measurement.

The selection guide provides an overview of the entire product lineup and helps you select the optimal product.

TAS4240 is a compact, cost-effective, redundant, half-bridge TMR-based sensor for angle and position detection. This article clearly describes and explains the features of TDK's TMR sensors, thus giving valuable information to our customers.

In electric vehicles (xEVs), thermal management plays a crucial role for battery safety and longevity, inverter and motor monitoring, and comfort also. For this purpose, TDK offers a broad variety of innovative NTC and PTC based temperature sensors solutions, optimized by their design and specification for the respective applications. However, advanced Micronas Hall sensors and motor controllers also perform important tasks, for example in the high-precision control of valves.