Motor control chip

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 brushed motors and voice coil motors.

All control functions are integrated in the hardware. Integrating ADCs, position sensor interface, and position differential, this fully functional servo controller is suitable for a variety of 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 △∑ADCs

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

Supports three-phase DC brushless servo and permanent magnet synchronous servo motors, 2-phase stepping 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 u200bu200bcontrol mode

-Position control mode

-Current control refresh frequency and maximum PWM frequency is 100KHz (speed and position control refresh frequency can be configured according to multiples of current current refresh frequency)

●Control function / PI controller

-Programmable chopping for input and output of interim results

-Protect all controls at the end of the integral circuit

-Programmable voltage cycle guide limiter

-Feedforward compensation and feedforward friction compensation of target value

-Advanced feedforward control structure to achieve the best trajectory tracking performance

-Extended interrupt request masking options and limiter status register

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