TMC246 Datasheet, PDF (1/1 Pages) TRINAMIC Motion Control GmbH & Co. KG. – Microstep Driver for up to 1.5A with stall Guard™

POWER DRIVER FOR STEPPER MOTORS
INTEGRATED CIRCUITS
TMC246
Microstep Driver for
up to 1.5A
with stallGuard™
INFO The TMC246 is a smart power microstepping driver for bipolar
stepper motors. The integrated unique sensorless stall detec-
tion stallGuard™ makes it a good choice for applications where
a reference point is needed, but where a switch cannot be
used. The ability to predict an overload makes the TMC246 an
optimum choice for drives, where a high reliability is desired.
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. The integrated low-RDS-ON
TrenchFET® power MOSFETs give an extremely high efficiency
and allow driving of a high motor current of up to 1.5A per
phase without cooling measures even at high environment
temperatures.
The small footprint and high efficiency make the device a per-
fect solution for embedded motion control and even for battery
powered designs.
MAIN CHARACTERISTICS
• sensorless stall detection StallGuard™
• 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
INTERFACE • easy-to-use SPI™ interface
• classical analog interface
ELECTRICAL • up to 1500 mA coil current (peak)
DATA
• 7V to 34V motor supply (TMC246A)
• 3.3V or 5V operation for digital part
PACKAGE • standard PQFP-44 package
• RoHS compliant
C/CLK
IN A
IN B
SPI
ERROR
3.3 / 5V DC
7..34V DC
OSC
2x
4 bit
DACs
TMC246
Control
&
Diagnostics
&
Stallguard
Temp / Volt
protection
PWM control
&
Gate Driver
Coil A
internal
Driver
Stage
Current
monitoring
PWM control
&
Gate Driver
Coil B
internal
Driver
Stage
Step
Motor
10 mm
ORDER CODE
TMC246A-PA
TMC428A-EVAL
DESCRIPTION
1.5A driver with stallGuard™, PQFP-44
Evaluation board for TMC428, TMC246A and TMC249A with stallGuard™
www.trinamic.com – for detailed information and datasheets
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