Renesas RAA2P3200

The RAA2P3200 is a magnet-free, inductive position sensor IC designed for absolute rotary, linear, or arc position sensing in industrial applications. It operates on the principle of eddy currents, detecting the position of a simple metallic target that is moving above a set of coils, comprising one transmitter coil and two receiver coils.

Inductive sensing technology offers significant advantages over magnetic technology, including greater flexibility, easier system integration, and enhanced performance, reliability, and cost efficiency. As a result, it is becoming the preferred choice for a wide range of industrial applications.

Features

• Voltage supply: 3.3V±0.3V or 5.0V±0.5V
• Qualified for industrial applications operating from -40°C to +125°C
• Output interfaces: SPI, high-speed UART (up to 2Mbit/s), ABI, step/dir, AB/PWM, and UVW
• High-accuracy sensor with 11-bit accuracy and 14-bit resolution
• Rotational speed: up to 600K rpm, with less than 100ns propagation delay
• Automatic gain control (AGC) to compensate for air-gap variations
• Autocalibration and 16-point linearization for enhanced accuracy
• Protection features: overvoltage ±18V, reverse-polarity ±18V, ESD, and short-circuit protection
• On-chip failure diagnostics
• External auxiliary sensor input
• Fully customizable sensing element design using the Renesas Inductive Position Sensor Coil Optimizer tool

Applications

• Customizable BLDC motor rotor position based on pole pair and accuracy
• E-scooters and e-bikes
• Rotor position sensors
• Motor commutation
• Resolver replacement
• Robotics
• Warehouse automation

Block diagram

Click to enlarge