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

 

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