AS5173 Magnetic Position Sensor for Advanced Chassis Position Sensing

The AS5173 magnetic position sensor from (ams-OSRAM) AG is engineered for advanced chassis position sensing in modern vehicles. Designed to support active damping systems, the AS5173 magnetic position sensor improves magnetic angle measurement accuracy while meeting stringent automotive safety standards. As electrified platforms demand greater ride comfort and energy efficiency, high-resolution sensing solutions are becoming essential across suspension and chassis control architectures.

High-Resolution Architecture for Chassis Position Sensing

The AS5173 magnetic position sensor is based on the proven AS5172 platform and integrates an advanced noise-reduction filter. This enhancement refines magnetic angle measurement resolution, enabling more precise detection of suspension and chassis movements. Such accuracy is particularly important in active damping systems deployed in electric vehicles, where real-time adjustments directly influence comfort, stability, and energy optimization.

Enhanced Magnetic Angle Measurement Stability

Through its differential on-chip measurement architecture, the AS5173 magnetic position sensor provides strong resistance to magnetic stray fields. Even when operating with weaker magnets, the device maintains reliable chassis position sensing performance. This stability ensures consistent data delivery to control systems operating under dynamic driving conditions.

Automotive Safety and Qualification Compliance

The AS5173 magnetic position sensor complies with AEC-Q100 Grade 1 qualification requirements, confirming its robustness in harsh automotive environments. In addition, it supports ASIL B functional safety, aligning with the safety integrity expectations of modern chassis and suspension systems. These certifications make the device suitable for integration into safety-relevant vehicle subsystems.

Functional Safety Integration

With ASIL B functional safety compliance, the AS5173 magnetic position sensor enables system designers to implement dependable chassis position sensing in electronically controlled damping modules. This capability supports fail-safe operation and diagnostic coverage in advanced vehicle architectures.

Simplified System Integration via PSI5 Interface

The AS5173 magnetic position sensor uses a PSI5 interface requiring only a two-wire connection consisting of supply and ground to the electronic control unit. This streamlined configuration reduces harness complexity, contributing to lower system weight and cost. Efficient communication over PSI5 further supports precise magnetic angle measurement transmission in distributed chassis control networks.

Optimized Operation with Low Magnetic Flux Density

Operating at just 10 mT magnetic flux density, the AS5173 magnetic position sensor can function effectively with non-rare earth or non-heavy rare earth magnets. This capability reduces dependency on critical raw materials while preserving accurate chassis position sensing performance. By combining low magnetic requirements with robust stray field immunity, the sensor supports sustainable and cost-efficient automotive design strategies.

Through its high-resolution architecture, safety compliance, and efficient system integration, the AS5173 magnetic position sensor strengthens next-generation chassis position sensing solutions for electrified vehicles.