POWER DRIVER FOR STEPPER MOTORS
INTEGRATED CIRCUITS
TMC262 DATASHEET
Universal, cost-effective stepper driver for two-phase bipolar motors with state-of-the-art features.
External MOSFETs fit different motor sizes. With Step/Dir Interface and SPI.
APPLICATIONS
Textile, Sewing Machines
Factory Automation
Lab Automation
Liquid Handling
Medical
Office Automation
Printer and Scanner
CCTV, Security
ATM, Cash recycler
POS
Pumps and Valves
Heliostat Controller
CNC Machines
FEATURES AND BENEFITS
High Current up to 8A Motor current using external (N&P)
MOSFETs.
DESCRIPTION
The TMC262 driver for two-phase stepper
motors offers an industry-leading feature
set, including high-resolution micro-
stepping, sensorless mechanical load
Highest Voltage up to 60V DC operating voltage
Highest Resolution up to 256 microsteps per full step
Smallest Size 5x5mm QFN32 package
measurement,
load-adaptive
power
Low Power Dissipation synchronous rectification
EMI-optimized slope & current controlled gate drivers
optimization, and low-resonance chopper
operation. Standard SPI™ and STEP/DIR
interfaces simplify communication. The
TMC262 drives four external N- and P-
channel dual MOSFETs for motor currents
up to 8A and up to 60V. Integrated
protection and diagnostic features support
robust and reliable operation.
Protection & Diagnostics overcurrent, short to GND,
overtemperature & undervoltage
stallGuard2™ high precision sensorless motor load detection
coolStep™ load dependent current control for energy savings
up to 75%
High integration, high energy efficiency
and small form factor enable miniaturized
designs with low external component
count for cost-effective and highly
competitive solutions.
microPlyer™
smoothness with coarse step inputs.
microstep
interpolation
for
increased
spreadCycle™ high-precision chopper for best current sine
wave form and zero crossing
BLOCK DIAGRAM
+VM
TMC262
VCC_IO
Gate driver
Gate Driver
HS
STEP
N
S
Sine Table
4*256 entry
x
Chopper
DIR
BM
Gate driver
Gate Driver
2 Phase
Stepper
CSN
SCK
SDI
SDO
LS
coolStep™
SPI control,
Config & Diags
RS
2 x Current
Comparator
RS
RS
2 x DAC
Protection
& Diagnostics
stallGuard2™
SG_TST
TRINAMIC Motion Control GmbH & Co. KG
Hamburg, Germany