Motion
Control
Integrated
Circuit
TMC
222
Features:
Motor Driver
Controls one stepper motor with four bit
micro stepping
Programmable coil current up to 800 mA
Supply voltage range operating range
8V ... 29V
Fixed frequency PWM current control
with automatic selection of fast and
slow decay mode
Microstepping Stepper Motor Controller / Driver with I²C Interface
The TMC222 is a system-on-chip,
which integrates an I²C interface, a
positioning controller and a 800mA,
2-phase stepper motor driver in a
single chip. The driver uses features a
resolution of up to 16 mi-
cro steps and integrates a
high performance current
regulation. The position-
ing controller integrates
trapezoid curve target positioning
and automatic search for reference
point. The building blocks support a
4096 full step positioning range. The
complete parameter setting can be
stored in OTP by the user or by an
system integrator.
After initialization
the TMC222 performs all time critical
tasks autonomously based on target
positions and velocity parameters.
Together with an inexpen-
sive microcontroller the
TMC222 forms a complete
motion control system.
Communication betweeen
the TMC222 and the host takes place
via a two wire serial interface with
transfer rates of up to 350 kbps.
Full step frequencies up to 1 kHz
High temperature, open circuit, short,
over-current and under-voltage
diagnostics
Motion Controller
Internal 16-bit wide position counter
Configurable speed and acceleration
settings
Build-in ramp generator for autonomous
positioning and speed control
On-the-fly alteration of target position
Reference switch input available for
read out
I²C Interface
Transfer rates up to 350 kbps
Diagnostics and status information as
well as motion parameters accessible
Field-programmable node addresses (32)
Application and Benefits
The TMC222 is the first SoC to com-
bine positioning intelligence and
drive electronics with a I²C serial
interface. A single I²C Master can
address up to 32 TMC222 controlled
axes, enabling a decentralized ar-
chitecture with all its benefits. The
all in one design enables the step-
per control IC to act as a true gate-
way to the stepper motors, turning
it into an economical and easy-to-
use peripheral device.
The proprietary current control al-
gorithm ensures very smooth and
quiet motor rotation, which is par-
ticularly desired in office environ-
ments. The TMC222 is ideal for a
wide range of distributed single axis
positioning applications. The circuit
can be placed directly at the motor
within encapsulated systems with a
bus length of up to a few meters,
or centralized on the same PCB as a
master CPU. Software coding is kept
to a minimum, assuring fast design
success and development cost re-
duction.The TMC222 targets espe-
cially IT peripherals, industrial auto-
mation, medical devices, consumer
appliances and white goods.
DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0 FAX +49 (0)40 - 51 48 06 60
WWW.TRINAMIC.COM
Motion
Control
Integrated
Circuit
TMC
222
Applications
Optical and fine mechanical devices
Office automation
Chip card reader
Plotters
Valves in building automation
IT peripherals
Industrial automation
Medical devices
Consumer appliances
White goods.
TMC222 Evaluation Board
The TMC222 evaluation board makes it possible to evaluate the
features of the TMC222 stepper motor controller and driver chip. The
TMC222 evaluation board allows
connecting the TMC222 chip to
a power supply, a motor and a
LIN master. The board is mainly
intended for direct attachment
to the Trinamic USB-2-X interface
converter which allows easy
interfacing of the evaluation board to a PC running under Windows
98/2000/XP via the USB interface.
The evaluation board has particularly small dimensions. At just 74 mm x
60 mm, it can easily be connected with different types of stepping motors.
The integrated screw terminals make installation easy; the PCB can be
adapted to every type of motor.
There is also an evaluation software running under Windows which
allows easy evaluation of all the features provided by the TMC222 chip.
The evaluation software needs the Trinamic USB-2-X interface converter
to work.
The TMC222 Evaluation Kit comes with a TMC222 Eval Board, USB-2-X
adapter, programming and evaluation software for Windows OS (9x, XP,
NT4.0, 2000), documentation, an USB cable and a stepper motor.
TMC222 Evaluation Software
Ordering Information
ORDER CODE
TMC222-SI
TMC222-Eval Board
TMC222-Eval Kit
DESCRIPTION
TMC222 SO-20
TMC222 Evaluation Board
TMC222 Evaluation Kit
with USB2X-interface
DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0 FAX +49 (0)40 - 51 48 06 60
WWW.TRINAMIC.COM
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