TMC4671-LA Hardware FOC Servo Controller IC

The TMC4671-LA from Analog Devices / ADI Trinamic implements field-oriented control (FOC) and torque/flux, velocity and position control in hardware. It supports 3-phase BLDC/PMSM motors, 2-phase steppers and 1-phase DC or voice-coil motors. This is a controller IC, not a complete motor driver: an external gate driver and power stage are required.

Key specifications - Package: QFN-76-EP, 10.5 × 6.5 mm body, 0.4 mm pitch; surface mount with exposed pad. - PWM engine: programmable 25–100 kHz. PWM frequency is not the closed-loop control bandwidth. - Feedback: ABN encoder, secondary encoder, analog/digital Hall and analog Sin/Cos interfaces; integrated delta-sigma ADCs. - Communication: SPI application interface, Step/Direction input, UART/SPI debugging and real-time monitoring. - Digital I/O supply: 3.3 V nominal, 3.15–3.45 V operating range; digital pins are not 5 V tolerant. - V5: 5 V analog reference supply. The 1.8 V core supply is generated internally. - Clock: external 25 MHz oscillator required.

System integration Select the external power stage, current sensing and position-feedback arrangement for the motor. Configure the control loops and follow the manufacturer's layout, supply and grounding guidance. Typical applications include robotics, factory automation and laboratory motion systems.

Order the TMC4671-LA IC from HONGTE. Refer to the official datasheet for full electrical limits and package drawings; contact us to confirm lot and delivery requirements.