SR3511N Resolver-to-Digital Converter
SR3511N is a 10- to 16-bit resolution resolver-to-digital converter designed to drive resolver sensors and capture their angular position and velocity data. The dual-magnetic resolver adopts an innovative resolver technology and boasts the industry's thinnest profile and most compact dimensions. As the high-precision position sensing solutions, SR3511N and the dual-magnetic resolver deliver exceptional sensing performance, superior noise immunity and greater design flexibility for next-generation motor control systems that demand high reliability, high integration density and high performance.
Resolver-to-Digital Converter
10- to 16-bit adjustable resolution for rotor motion sensing
Built-in sine wave excitation to simplify design and eliminate external clock
High-speed tracking up to 3125rps for high-speed applications
Fully integrated R/D conversion loop for real-time digital outputs of angle and velocity
Compatible with traditional wound-rotor and reluctance-type resolvers, as well as next-generation dual-magnetic resolvers
Compact QFN32 package (5×5×0.85mm)
SR3511 Advanced Technology
Dynamic Response to Rapid Acceleration/Deceleration
Traditional RDC adjusts its resolution and tracking rate through fixed bandwidth settings. Fortior’s SR3511 integrates an automatic bandwidth adjustment algorithm that dynamically selects the optimal bandwidth based on real-time motor operating conditions, ensuring system stability in complex and rapidly changing conditions.
Adaptive Bandwidth Control: Automatically tune bandwidth during acceleration/deceleration for rapid tracking
✔ Zero Step Loss: Lock rotor position precisely to prevent control failure
✔ Minimized Angular Error: Clamp angular error in a small range to avoid control failure or step loss
✔ Robust Performance in Complex Conditions: Track rotor position accurately under sudden loads or emergency stops
Enhanced System Stability for High-dynamic Applications (Servo Drives, Robotic Joints, etc.)
✔ Industrial Servo Motors: Keep high-precision positioning during rapid start-stop cycles
✔ NEV Electric Drive Systems: Deliver smooth and stable control during rapid acceleration or regenerative braking
✔ Robot Joints: Ensure jerk-free motion and zero position loss during fast direction changes
Robust Performance by Multiple Error Corrections
Fortior’s SR3511 integrates multiple error correction algorithms to achieve greater stability and precision than traditional solutions. It empowers industries including industrial automation, new energy vehicles, and robotics to push performance boundaries. SR3511N —— Where Every Degree Matters.
SR3511N Innovation: Real-time Phase Correction Technology
Through an innovative excitation phase correction algorithm, SR3511N achieves:
✔ Unlimited Compensation: Automatically correct phase delays of any magnitude, even those exceeding 90°
✔ Continuous and Stable Operation: Maintain reliable system functionality even in harsh operating conditions
✔ Enhanced Accuracy: Further improve angular detection precision through dynamic compensation
SR3511N Innovation: Interpolation Correction Function
✔ Interpolation Correction Algorithm: Correct the system's angular output through interpolation, effectively enhancing angular precision
✔ Error Elimination Algorithm: Calibrate and eliminate system errors, further improving the accuracy of RDC's decoded angles
High Reliability: Ready for Extreme Conditions
SR3511N delivers stable and precise signals even in harsh conditions with strong interference and high noise. It ensures exceptional reliability in complex electrical conditions and enables fast and precise data decoding. Whether for industrial automation, new energy vehicles, or demanding robotic joint control applications, SR3511N seamlessly meets every challenge and ensures stable and efficient decoding with zero position loss for your system.
Innovative Resolver Technology — Dual-magnetic Resolver
Innovative resolver technology and highly compact design
Absolute or incremental angular detection mode
Dual-channel angle detection at low cost
Ultra-low latency
Immunity to stray magnetic fields
High accuracy with low temperature drift and low noise
High-speed position detection
Flexible design for a wide range of applications
Flat, compact size and lightweight structure
Customized and emulation-ready coil design
