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| MOTION C O N T R O L L E R F O R S T E P P E R A N D P I E Z O M O T O R S I N T E G R A T E D C I R C U ITS TM C4 57 Step per and Piezo Mo tor Controll er (S-sh ape Ramps) with Enc oder Int erface, easyPIDTM Feedbac k Control and Inte grated S equencer M A IN CH A R AC T ER IS T IC S INFO The TMC457 is a high-end single axis micro stepping motion controller for 2-phase bipolar stepper motors, piezo motors (Piezo LEGS(R)). 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 chopSyncTM feature allows high speed movement avoiding resonances. An encoder can be added for extremely quick and precise positioning using the internal hardware PID regulator easyPIDTM 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. +1.5V +3.3V * S-shaped and linear ramps with on-the-fly alteration of all parameters * programmable high resolution sequencer with (12bit, 8192 entry) micro step LUT table * integrated sequencer * incr. encoder interface with flexible up- and down scaling to match drive resolution * fast and stable easyPIDTM PID controller * 32 bit registers "from mHz to MHz" * reference switch processing * virtual stop sw. (programmable soft limits) * position pulse output to trigger ext. events * synchronization of multiple axis via step/direction input * integrated chopSyncTM for high velocities * analog high resolution motor driver control via external dual -low cost- 12 bit DAC * energy saving by automatic load angle dependent current control one capacitor per supply pin 100n +1.5V GND 100n +3.3V RES RES I TMC457 CLK ELECTRICAL DATA INTERFACE * 3.3V IO/ 1.5V core * SPI interface to microcontroller * step / direction output (with progr. timing) * stallGuardTM interface for TMC246/TMC249 family stepper motor drivers CLK I ENABLE I Interface Section Motion profile generation S-Ramp generator Sequencer O NSCS STEP_OUT I Host CPU SPI Interface SCK I SDI I SPI bus interface Register Block target v SDO O Trapezoid Ramp generator Pulse generator Output Pulse generator STEP/ DIR O DIR_OUT O XSTEP_OUT O HIRES_OUT Step/Dir Output O STDBY_OUT NINT O Interrupt control control & status Position Counter Microstep RAM 8192*12 O POSCOMP O Position compare 2 phase stepper & piezo sequencer O PHA PHB O O O Optional Step/ Dir Input STEP_IN I DIR_IN I STEP DIR Prescaler easyPID PID controller O I O NCS_DAC SCK_DAC SDO_DAC_A SDO_DAC_B PZO_EN Classic stepper driver Analog control of Stepper / Piezo via DAC (LTC2622) TMC246 / TMC249 stepper driver PACKAGE * FBGA144 package 13 x 13 mm * RoHS compliant PID Stop / Reference Switches Optional Incremental Encoder STOPL I TMC24x SPI interface O O I STOPR I Stop input processing & virtual stop switches I NCS_DRV SCK_DRV SDO_DRV SDI_DRV NANA_SPI Encoder quadrature decoder Encoder Scaler & Counter ChopSync O ChopClk ENC_A ENC_B ENC_N synchronized chopper clock 10 mm I I I OR DE R C O DE D E S C RI P T I ON TMC457-BC Related product: TMC457-Eval 1-axis motion controller with encoder feedback, FBGA144 package Evaluation board for TMC457 www.trinamic.com - for detailed information and datasheets 93 |
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