Renesas Launches Magnet-Free Inductive Position Sensors and Web-Based Coil Optimizer for Industrial Robotics Applications

Renesas Electronics launched three magnet-free inductive position sensor ICs: RAA2P3226, RAA2P3200, and RAA2P4200. These ICs support custom coil designs for industrial applications including robotics, medical and healthcare systems, smart buildings, home appliances, and motor commutation. The sensors provide an alternative to magnetic and optical encoders due to lower cost, reduced size, and less maintenance.

The ICs operate using non-contact coil sensor technology with a metallic target in dual-coil or single-coil setups to detect absolute rotary, linear, or arc positions. They function in temperatures from -40°C to 125°C and resist particulate matter, moisture, vibration, and electromagnetic interference. The sensors remain unaffected by stray magnetic fields and need no maintenance.

All models achieve position accuracy better than 0.1 percent of the full-scale electrical range. The RAA2P3226 and RAA2P3200 handle speeds up to 600K RPM (electrical) with delays under 100ns. The RAA2P3226 uses dual-coil sensing for up to 19-bit resolution and 0.01° absolute accuracy in robotic systems. The RAA2P3200 focuses on high-speed motor commutation, while the RAA2P4200 addresses low-speed uses like medical devices and power tools. Each includes automatic calibration and linearization.

Renesas also released a web-based Inductive Position Sensor Coil Opti...