1-axis stepper and piezo motion controller with S-ramps and encoder feedback
The TMC457 is a high-end single axis micro stepping motion controller for 2-phase bipolar stepper motors, piezo motors (Piezo LEGS™). Via 
step / direction interface 3-phase stepper motors can also be controlled (requires additional TMC332). It adds to any microcontroller or processor with SPI interface. It is intended for applications, where a precise and fast, jerk-free motion profile is desired. The TMC457 supports linear and S-shaped velocity ramps. It’s chopSync™ feature allows high speed movement avoiding resonances. An encoder can be added for extremely quick and precise positioning using the internal hardware PID regulator easyPID™ and for increased reliability / fault detection. For maximum flexibility all motion control parameters (target position, target velocity, acceleration, deceleration and bow) can be changed on-the-fly at any time during motion.
Specifications
Main characteristics
- S-shaped and linear ramps with on-the-fly change of all parameters
- programmable high resolution sequencer with 12-bit µstep LUT
- incremental encoder interface with flexible brought range scaling
- easyPID™ fast and stable PID controller
- 32bit register (mHz to MHz)
- reference switch processing
- virtual stop sw. (programmable soft limits)
- position pulse output to trigger events
- synchronisation of multiple axis via step/direction
- chopSync™ feature for high speed operation without resonance problems
- analog high resolution driver control via external low-cost 12-bit DAC
- energy saving by automatic load angle dependent current control
Interface
- SPI host interface
- step/direction output
- stallGuard™ interface for TMC246/TMC249 stepper motor driver
Electrical data
- 3.3V compatible I/Os
- 1.5V core supply
Package
- FBGA144 (13*13mm2)
- RoHS compliant
- packaging unit: 160pcs. per tray
