POW E R D R I V E R F O R S T E PP E R M OT O RS
I N T E GR A T E D C I R C U ITS
TMC
2 39
M i c r o s t ep D r i v e r
for External MOSFETs
f o r up t o 4 A
M A IN CH A R AC T ER IS T IC S
INFO
The TMC239 is a smart high current microstepping driver for
bipolar stepper motors. It provides an SPI™ interface as well as
the classical analog / digital control. A full set of protection and
diagnostic features makes this device very rugged. It directly
drives external MOSFETs for currents of up to 4A. (A list of
compatible power MOSFETs is given within the datasheet.) This
way it reaches an extremely high efficiency and allows driving
of a high motor current without cooling measures even at high
environment temperatures. With the new chip-scale QFN pack-
age a 4A motor driver can be realized on the size of a stamp!
The high motor current makes this device ideal for miniaturized
highly dynamic and high torque drive systems.
The evaluation can be done with the TMC249 as the only differ-
ence is the additional stallGuard™ feature.
ELECTRICAL
DATA
INTERFACE
• full protection and diagnostics
• low power dissipation
• 16 times microstepping via SPI,
64 times using additional shift register,
even more via analog control
• mixed decay for smooth operation
• programmable slope control for low EME
• internal or external chopper clock
• standby and shutdown mode
• easy-to-use SPI™ interface
• classical analog interface
• up to 4000 mA coil current (peak) with
just 4 external dual MOSFETS
• 7V to 34V motor supply (TMC239A),
up to 60V using a few add. components
• higher current / voltage using additional
gate drivers
• 3.3V or 5V operation for digital part
PACKAGE
• standard SO28 package
• chip size QFN32 package
• RoHS compliant
C/CLK
TMC239
OSC
IN A
IN B
2x
4 bit
DACs
PWM control
&
Gate Driver
Coil A
SPI
Control
&
Diagnostics
Current
monitoring
PWM control
&
Gate Driver
Step
Motor
10 mm
ERROR
3.3 / 5V DC
7..34V DC
Temp / Volt
protection
Coil B
ORDER CODE
DESCR IPT ION
TMC239A-SA
TMC239A-LA
Related product:
TMC428A-EVAL
4A driver for external MOSFETs, SO28
4A driver for external MOSFETs, QFN32
TMC32NP, TMC32NP2, TMC34NP
Evaluation board for TMC428, TMC246A and TMC249A with stallGuard™
www.trinamic.com
– for detailed information and datasheets
13
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
