TRINAMIC’s TMC4671 is a fully integrated servo controller IC providing field-oriented control for BLDC / PMSM and 2-phase stepper motors, as well as DC motors and voice coils.

The trend towards automating everything around us has increased the demand for energy efficient control of even the smallest motors. The focus on reducing energy consumption has shifted from large motors to the smaller, embedded applications, where the use of large inverters is not an option.

The TMC4671 addresses this market by embedding all necessary control loops in rugged, reliable-state machines. By offloading real-time critical tasks from the processor and software and implementing all control functions into the hardware, the TMC4671 offers a crucial benefit by taking care of all control functions itself. Integrated ADCs, position sensor interfaces, and position interpolators enable a fully functional servo controller for a wide range of servo applications such as robotics, pick and place machines, factory automation, e-mobility, lab automation, and blowers.

The TMC4671 is designed to rapidly decrease time to market for highly performing servo controllers while maximizing drive efficiency as well as dynamics. With all-time critical calculations in the hardware, just a few lines of code are necessary to develop a dynamic servo controller.

This controller offers high switching frequency and controller update rates of up to 100 kHz and has filtering and interpolation features like the digital Hall signal interpolation for smoother operation. The IC can work with various encoders such as simple digital or analog Hall sensors over A/B/Z incremental and high-resolution sin/cos analog encoders. Sensors can be flexibly mapped as an input for position and velocity control loops. With its delta-sigma current sensing ADCs, the TMC4671 is ideally suited for isolated delta-sigma front-ends.