Analog Devices Inc./Maxim Integrated TMC4671-ES

Overview

TMC4671-ES from TRINAMIC Motion Control is a fully integrated, hardware-based servo controller IC implementing Field-Oriented Control (FOC) for 3-phase PMSM/BLDC, 2-phase stepper, and DC/voice coil motors. It delivers torque, velocity, and position control with 100 kHz current-loop update rate, integrated ΔΣ-ADCs, encoder/Hall sensor interfaces, and SVPWM engine - enabling compact, high-efficiency motion control in robotics and factory automation.

For engineers reviewing the TMC4671-ES datasheet, TMC4671-ES pinout, TMC4671-ES application, or TMC4671-ES equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts, and supply-ready procurement details - all grounded in TRINAMIC's official V1.06 datasheet and order code documentation.

Technical Context

The TMC4671-ES implements FOC entirely in dedicated hardware logic - eliminating CPU interrupt latency and software implementation complexity. Its FOC23 engine performs Clarke/Park/iPark transformations, executes dual PI controllers (flux & torque), and supports feed-forward friction compensation and biquad filtering for trajectory tracking.

It integrates dual ΔΣ-ADC groups (A/B) with programmable scaling and offset correction for current sensing, motor voltage, and analog position sensors; supports digital ABN encoders up to 5 MHz and Hall sensors with 60°-resolution interpolation; and features a fully configurable PWM engine (20–100 kHz) with SVPWM, BBM timing (0–2.5 µs), and auto-scaling during motion.

Key Specifications

Pinout & Package

Package: QFN76 (10.5 mm × 6.5 mm, 0.4 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar servo controller applications.

Compared with STSPIN32F0B and MP6532, the TMC4671-ES delivers higher current-loop bandwidth (100 kHz), full analog front-end integration (ΔΣ ADCs, SinCos/Hall support), and hardware-accelerated encoder initialization - reducing time-to-market for precision motion systems by eliminating firmware FOC development and external component selection.

Availability

TMC4671-ES is available at Aetrix Electronics and suitable for robotics, factory automation, and E-mobility actuators requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial production programs.

Supply support for TMC4671-ES includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

TRINAMIC Motion Control GmbH & Co. KG is a German semiconductor company specializing in high-performance motion control ICs and modules, founded in 1997 and headquartered in Hamburg.

The TMC4671-ES belongs to TRINAMIC's FOC servo controller product line, designed specifically to replace FPGA- or MCU-based motion control firmware with deterministic, low-latency hardware engines for industrial and mobile servo applications.

FAQ

What is the maximum current-loop update rate supported by the TMC4671-ES?

The TMC4671-ES supports a maximum current-loop update rate of 100 kHz, enabled by its fully hardware-implemented FOC23 engine. This deterministic timing is independent of host processor load and ensures minimal phase lag in torque control. The TMC4671-ES achieves this performance using dedicated logic for Clarke/Park transforms and PI control, making it suitable for high-dynamic applications like robotic joints and precision CNC axes.

Does the TMC4671-ES support analog position sensors such as SinCos encoders?

Yes, the TMC4671-ES supports analog position sensors including SinCos encoders with 0°/90° or 0°/120°/240° phase configurations via its AINx/AINy differential analog inputs (±5 V range). It includes an integrated analog position decoder and 16-bit ΔΣ ADC frontend with programmable scaling and offset correction - enabling direct connection without external signal conditioning. This capability is explicitly documented in Section 4.7.8–4.7.9 of the TMC4671-ES datasheet.

Can the TMC4671-ES operate without an external microcontroller?

No, the TMC4671-ES requires an external host microcontroller for configuration, command issuance, and higher-level motion profiling. It operates as a peripheral servo controller via SPI, UART, or Step/Direction interface. While all real-time FOC, velocity, and position loops run autonomously in hardware, the host MCU must initialize registers, set targets, and handle system-level logic - as confirmed in Sections 4.2 and 4.8 of the TMC4671-ES datasheet.

What package type and dimensions does the TMC4671-ES use?

The TMC4671-ES uses a QFN76 package measuring 10.5 mm × 6.5 mm with 0.4 mm pitch and an exposed thermal pad. This compact footprint is specified in Table 1 (Order Codes) and Section 12 (Package Dimensions) of the official TMC4671-ES datasheet. The package supports high-density PCB layouts and efficient thermal dissipation when properly soldered with thermal vias to inner ground planes.

Does the TMC4671-ES include built-in protection features like watchdog or overtemperature shutdown?

The TMC4671-ES includes a configurable watchdog timer (Section 5.1) that monitors host SPI communication and resets the device if no valid command is received within the programmed timeout window. However, it does not integrate overtemperature shutdown circuitry - thermal protection must be implemented externally via the host MCU reading temperature sensor inputs or monitoring power stage conditions. This distinction is clearly stated in Sections 5 and 9.2 of the TMC4671-ES datasheet.