Trinamic Integrated Circuits - PDF Catalogues
TMC332 Single axis high precision sequencer for 2 and 3 phase stepper motors
Description
The TMC332 is a high precision, micro-step sequencer with integrated PWM units. New smoothMod™ technology makes equi-distant µsteps and positioning on µsteps possible. Internal µstep counters with programmable step width make the handling of the physical units simple. The TMC428 step direction interface of the TMC332 is directly compatible to the driver chain interface of the TMC428 motion controller. The other step direction interface is a classical two wire step direction interface. ‘Parameterising’ of the TMC332 takes place over a common SPI micro controller interface.
The integrated sine wave look up table output is either 2 sine waves with a phase shift of 90° for 2-phase stepper motors or 3 sine waves with +/- 120° phase shift for 3-phase motors.
The gate control block of the TMC332 provides the gate control signals for the power stage half bridges, including programmable break before make timing and over current protection. Incremental encoders (ABN) to evaluate the physical motor position can be connected to the TMC332. The device also contains a current measurement unit and a current regulator requiring only a few inexpensive external components. Switching to full-step and the chopSync™ feature allow high velocity operation.
Specifications
- High precision µstep sequencer
- 2-phase and 3-phase stepper motor control
- smoothModTM for smooth motor operation
- 51k equi-distant µsteps per rev. (200step 2-phase / 300step 3-phase motor)
- Positioning on each µstep
- 9-bit PWM units, 8-bit PWM scaler
- 4-bit PWM sub-modulation for scaling quantization compensation
- Programmable PWM frequency
- Programmable break-before-make timing
- Integrated current measurement ADC (just 2x LM339, 1x LM324 and some RC needed)
- Integrated current regulation
- Manual or automatic µstep-2-fullstep switching for higher velocities
- chopSyncTM feature for high speed operation without resonance problems
Interface
- Classic two wire step/direction
- TMC428 driver chain step/direction
- Common SPI for parammeterising TMC332 and TMC428
Electrical data
- 3.3V compatible I/Os
- Core supply 1.5V
Package
- FBGA144 (13*13mm2)
- RoHS compliant
- Packaging unit: 160pcs. per tray
5-8 Chilford Court, Rayne Rd, Braintree, Essex, CM7 2QS Tel: 01376 333333 Fax: 01376 551849
Copyright © 2012 Micromech Ltd. All rights reserved.