Motion
Control
Integrated
Circuit
TMC
249
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TRINAMIC
IM
I C R O C H I P S
I
G M B H
Features
Drives 2-phase stepper motors
Integrated load measurment allows
sensorless stall detection (Pat. Fi.)StallGuard™
Up to 10A and 75V with external circuitry
7V to 28.5V motor supply voltage
Low power dissipation via external low
RDS-ON power stage
4 bit DACs allow up to 16 times µ-stepping via
SPI, higher resolution via analog control
Control via SPI with easy to use 12 bit
protocol or external analog / digital signals
Status Flags for short circuit,open load,
over temperature, temperature pre-warning,
undervoltage
Short circuit, over temperature, over voltage
protection integrated
Internal open load detector
Mixed decay feature for smooth motor
operation
3.3V or 5V operation for digital part
Current control allows cool motor and
driver operation
Standby and shutdown mode available
Slope control user programmable to reduce
electromagnetic emissions
Chopper frequency programmable via single
capacitor or external clock
Only 4 external PMOS transistors required for
unipolar operation
TMC249 Application Environment
High Current Microstep Stepper Motor Driver with Sensorless Stall
Detection,Protection / Diagnosis and SPI Interface
The TMC249 is a dual full bridge driver IC
for bipolar stepper motor control applica-
tions. The TMC249 is realized in a HVC-
MOS technology and directly
drives eight external Low-RDS-ON
high efficiency MOSFETs. It sup-
ports up to 4000mA coil current.
With additional drivers, motor current and
voltage can be increased. The driver tran-
sistors can be chosen depending on output
current or environment temperature. The
integrated unique sensorless stall detec-
tion (pat.fi.) StallGuard™ makes it a good
choice for applications, where a reference
point is needed, but where a switch is not
desired. Its ability to predict an overload
makes the TMC249 an optimum
choice for drives, where a high relia-
bility is desired. Internal DACs allow
microstepping as well as smart cur-
rent control. The device can be controlled by
a serial interface (SPI™) or by analog / digi-
tal input signals. Short circuit, temperature,
undervoltage and overvoltage protection are
integrated.
SPI
TM
is a trademark of Motorola,Inc.
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TMC249 Block Diagram
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DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0
FAX +49 (0)40 - 51 48 06 60
TRINAMICINORTHIAMERICA,IINC.I4011N.MICHIGANIAVE.ISUITE125251CHICAGO,IILLINOISI60611I TEL: 1-866-TRINAMIC
W W W . T R I N A M I C . C O M
Motion
Control
Integrated
TMC
Circuit
Motion
Control
Integrated
Circuit
249
TMC249
2-phase bipolar stepper motors
depends on external transistors
4-bit DACs allow 16-64
x
µ-stepping
-40°C to + 140°C
7 V to 30V
3V to 5.5V
SPI / external analog current
12 bit
4 bit / linear
typ. 0.8mA
typ. 28µA
freely programmable:50ns - 500ns
SO28
available
TRINAMIC
M I C R O C H I P S
I
G M B H
Technical Specifications
Product Name
Motors Controlled
Motor Current
µ-Step Resolution
Temperature Range
Motor Supply Voltage
Digital Operating Voltage
Inputs
SPI Datagram Length
Internal DAC Resolution
Supply Current Digital
Shutdown Current
Output Slope Control
Available Packages
Evaluation Kit
TMC 249 SO28 Pinout
TMC 249 SO28 Dimensional Specifications
TMC249 Stall Detection Ramp
Ordering Information
ORDER CODE
TMC249-A
TMC249-EVAL
DESCRIPTION
TMC249-SO28
TMC249 Evaluation Kit
DEELBOEGENKAMP 4C 22297 HAMBURG GERMANY TEL +49 (0)40 - 51 48 06 0
FAX +49 (0)40 - 51 48 06 60
TRINAMICINORTHIAMERICA,IINC.I4011N.MICHIGANIAVE.ISUITE125251CHICAGO,IILLINOISI60611I TEL: 1-866-TRINAMIC
WWW .TRINAMIC.COM
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