MOT I O N C O N T R O L L E R F O R S TE P PE R A N D P IE Z O M OT O RS
I N T E GR A T E D C I R C U ITS
TMC
4 57
Stepper and Piezo Motor
C o nt r o l l e r ( S - s h a p e R a m ps)
w i th E n c o d e r I n t e r f ac e ,
e a sy P I D ™ F e e d b a c k C on t r ol
a n d I n t e g r a t e d S e q u en c e r
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®). 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 mo-
tion 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 posi-
tioning 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.
+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 easyPID™ 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/di-
rection input
• integrated chopSync™ 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)
• stallGuard™ 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 mm²
• 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
ORDER CODE
DESC R IP T IO N
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
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
