TMC4671 is a fully integrated servo motor control chip that provides field oriented control for DC brushless motors, permanent magnet synchronous motors, 2-phase stepper motors, DC brushless motors, and voice coil motors.

All control functions are integrated into the hardware. Integrated with ADCs, position sensor interfaces, and position differentiators, this fully functional servo controller is suitable for various servo applications

Function Introduction:

Servo control chip, space magnetic field vector control (FOC)

Torque Control (FOC), Speed Control, Position Control

Feedforward control input

Integrated ADCs, front-end Δ∑ ADCs

Encoder engine: analog and digital Hall, analog and digital encoders

Supports three-phase DC brushless servo and permanent magnet synchronous servo motors, 2-phase stepper servo motors, DC brushless and voice coil motors

Advanced PWM engine (25KHz... 100KHz)

Application SPI+Debugging (UART, SPI)

Pulse/direction interface

Performance description:

● Servo control chip with magnetic field vector control (FOC)

-Torque control mode

-Speed control mode

-Position control mode

-The current control refresh frequency and maximum PWM frequency are 100KHz (the refresh frequency for speed and position control can be configured based on multiples of the current current refresh frequency)

● Control function/PI controller

-Programmable chopping for input and output of mid-term results

-Protect all controls with integral circuit ending

-Programmable voltage cycle guide limiter

-Feedforward compensation and feedforward friction compensation for target values

-Advanced feedforward control structure for optimal trajectory tracking performance

-Extended Interrupt Request Masking Options and Limiter Status Registers

-Advanced encoder initialization algorithm with Hall sensor or/and minimum movement