IPS2550DE1R Renesas Electronics Corporation IPS2550DE1R Inductive Position Sensors

The Renesas IPS2550DE1R represents a breakthrough in contactless inductive position sensing, delivering absolute rotor position data via sine/cosine outputs for ultra-high-speed motor commutation up to 600,000 electrical RPM. Designed as a core component of Resolver 4.0, this innovative IC eliminates the need for magnets and optical encoders while providing superior stray-field immunity, extreme temperature resilience, and BOM cost reduction.

Perfect for functional safety-critical automotive systems (EPS, E-motors, transmission), industrial servo motors, and robotics, the IPS2550DE1R leverages eddy current principles to track the position of a simple metallic target over a custom coil array (1 Tx + 2 Rx). Its user-configurable single-ended or differential outputs adapt to noise environments, while programmable gain control ensures consistent accuracy ??0.1% FS.

Key Advantages Over Traditional Sensors

• ?No Magnets Needed ?C Uses low-cost metallic targets (vs. fragile magnets in Hall-effect sensors)
• Inherent Stray-Field Immunity ?C Operates reliably near high-power motors without shielding
• Resolver 4.0 Technology ?C 50% smaller/lighter vs. resolvers, 70% lower BOM cost
• Extreme Environment Rated ?C -40??C to +160??C operation (AEC-Q100 qualified)
• Configurable Outputs ?C Single-ended (cost-optimized) or differential (noise-resistant)
• Supports Multiple Motion Types ?C On-axis/off-axis rotation, linear/arc movement via coil design
• Built-In Diagnostics & Protection ?C Reverse polarity (??18V), over-voltage, and ESD hardened

Features & Specifications

1. High-Precision Inductive Sensing Technology

• Eddy-current-based detection?of metallic targets (iron, aluminum, etc.)
• Sine/cosine analog outputs?(differential or single-ended) for absolute position
• 0.1% FS accuracy?(with ideal coil design),???1?? electrical error
• Automatic Gain Control (AGC)?with programmable limits

2. Flexible Programmability & Interfaces

• Non-volatile memory?for user settings (stored calibration, output mode)
• I2C/SPI digital interface?for real-time configuration & diagnostics
• Analog/digital programmability?for dynamic adjustment

3. Robust Automotive-Grade Design

• Dual supply ranges: 3.0?C3.6V or 4.5?C5.5V
• ??18V fault protection?on supply/output pins (ISO 7637-2 compliant)
• 16-pin TSSOP package?(MSL1, Pb-free) for compact PCB layouts

4. Multi-Motion Support

• Full 360?? rotational sensing?(on-axis or off-axis)
• Linear/arc motion tracking?via custom coil optimization

Applications

Automotive (ASIL-D Capable)

• Electric Power Steering (EPS)?motor commutation
• E-Axle & Transmission?position feedback
• Throttle/Brake Pedal?sensing
• Brushed/Brushless DC Motor Control

Industrial & Robotics

• Servo motor encoders?(replace optical/Resolver)
• Robotic joint actuators
• CNC machine tool spindles
• Elevator door positioning

Energy & Aerospace

• Wind turbine pitch control
• Flight control surface actuators

Comparative Benefits vs. Competing Technologies