Datasheet

TMC4671 Datasheet • IC Version V1.3 | Document Revision V2.00 • 2020-Apr-17
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2 Functional Summary
• Servo Controller with Field Oriented Control (FOC)
– Torque (and flux) control mode
– Velocity control mode
– Position control mode
• Control Functions/PI Controllers
– Programmable clipping of inputs and outputs of interim results
– Integrator windup protection for all controllers
– Status output with programmable mask for internal status signal selection
• Supported Motor Types
– FOC3 : 3-phase permanent magnet synchronous motors (PMSM) / brushless DC motor (BLDC)
– FOC2 : 2-phase stepper motors
– FOC1 : 1-phase brushed DC motors, or linear voice coil motors
• ADC Engine with Offset Correction and Scaling
– Integrated Delta Sigma ADCs for current sense voltage, supply voltage, analog encoder, AGPIs
– Interface for isolated external current sensing Delta Sigma modulators
• Position Feedback
– Open loop position generator (programmable [rpm], [rpm/s]) for initial setup
– Digital incremental encoder (ABN resp. ABZ, up to 2 MHz)
– Secondary digital incremental encoder
– Digital Hall sensor interface (H1, H2, H3 resp. H_U, H_V, H_W) with interim position interpolation
– Analog encoder/analog Hall sensor interface (SinCos (0°, 90°) or 0°, 120°, 240°)
– Position target, velocity and target torque filters (Biquad)
– multi-turn position counter (32-bit)
• PWM Engine Including SVPWM
– Programmable PWM frequency within the range of 25 kHz . . . 100 kHz
– PWM auto scaling for transparent change of PWM frequency during motion
– Programmable Brake-Before-Make (BBM) times (0 ns . . . 2.5 µs) for digital gate control signals
– Single bit SVPWM control (on/off) for Space Vector Modulation (switchable during operation)
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