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TMC262 데이터시트 PDF




TRINAMIC에서 제조한 전자 부품 TMC262은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 TMC262 기능
기능 cost-effective stepper driver
제조업체 TRINAMIC
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TMC262 데이터시트, 핀배열, 회로
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.
FEATURES AND BENEFITS
High Current up to 8A Motor current using external (N&P)
MOSFETs.
Highest Voltage up to 60V DC operating voltage
Highest Resolution up to 256 microsteps per full step
Smallest Size 5x5mm QFN32 package
Low Power Dissipation synchronous rectification
EMI-optimized slope & current controlled gate drivers
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%
microPlyer™ microstep interpolation for increased
smoothness with coarse step inputs.
spreadCycle™ high-precision chopper for best current sine
wave form and zero crossing
BLOCK DIAGRAM
VCC_IO
STEP
DIR
CSN
SCK
SDI
SDO
TMC262
Sine Table
4*256 entry
x
Chopper
GaGtaetedrDivrievrer
GaGtaetedrDivrievrer
SPI control,
Config & Diags
Protection
& Diagnostics
coolStep™
stallGuard2
2 x Current
Comparator
2 x DAC
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
DESCRIPTION
The TMC262 driver for two-phase stepper
motors offers an industry-leading feature
set, including high-resolution micro-
stepping, sensorless mechanical load
measurement, load-adaptive power
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.
High integration, high energy efficiency
and small form factor enable miniaturized
designs with low external component
count for cost-effective and highly
competitive solutions.
+VM
HS
N
S
BM
2 Phase
Stepper
LS
RS
RS RS
SG_TST
TRINAMIC Motion Control GmbH & Co. KG
Hamburg, Germany




TMC262 pdf, 반도체, 판매, 대치품
TMC262 DATASHEET (Rev. 2.12 / 2015-JAN-13)
1 Principles of Operation
High-Level
Interface
µC S/D TMC262
SPI
MOSFET
Driver
Stage
0A+
0A-
0B+
0B-
N
S
4
High-Level
Interface
TMC429
µC
SPI
Motion
Controller
S/D
TMC262
for up to
3 Motors
SPI
MOSFET
Driver
Stage
0A+
0A-
0B+
0B-
N
S
Figure 1.1 Applications block diagrams
The TMC262 motor driver is the intelligence between a motion controller and the power MOSFETs for
driving a two-phase stepper motor, as shown in Figure 1.1 Following power-up, an embedded
microcontroller initializes the driver by sending commands over an SPI bus to write control
parameters and mode bits in the TMC262. The microcontroller may implement the motion-control
function as shown in the upper part of the figure, or it may send commands to a dedicated motion
controller chip such as TRINAMIC’s TMC429 as shown in the lower part.
The motion controller can control the motor position by sending pulses on the STEP signal while
indicating the direction on the DIR signal. The TMC262 has a microstep counter and sine table to
convert these signals into the coil currents which control the position of the motor. If the
microcontroller implements the motion-control function, it can write values for the coil currents
directly to the TMC262 over the SPI interface, in which case the STEP/DIR interface may be disabled.
This mode of operation requires software to track the motor position and reference a sine table to
calculate the coil currents.
To optimize power consumption and heat dissipation, software may also adjust coolStep and
stallGuard2 parameters in real-time, for example to implement different tradeoffs between speed and
power consumption in different modes of operation.
The motion control function is a hard real-time task which may be a burden to implement reliably
alongside other tasks on the embedded microcontroller. By offloading the motion-control function to
the TMC429, up to three motors can be operated reliably with very little demand for service from the
microcontroller. Software only needs to send target positions, and the TMC429 generates precisely
timed step pulses. Software retains full control over both the TMC262 and TMC429 through the SPI
bus.
1.1 Key Concepts
The TMC262 motor driver implements several advanced patented features which are exclusive to
TRINAMIC products. These features contribute toward greater precision, greater energy efficiency,
higher reliability, smoother motion, and cooler operation in many stepper motor applications.
stallGuard2
coolStep
spreadCycle
microPlyer
High-precision load measurement using the back EMF on the coils
Load-adaptive current control which reduces energy consumption by as much as
75%
High-precision chopper algorithm available as an alternative to the traditional
constant off-time algorithm
Microstep interpolator for obtaining increased smoothness of microstepping over a
STEP/DIR interface
www.trinamic.com

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TMC262 전자부품, 판매, 대치품
TMC262 DATASHEET (Rev. 2.12 / 2015-JAN-13)
7
Pin
SDI
SCK
CSN
ENN
CLK
VHS
VS
TST_ANA
SG_TST
GNDP
VCC_IO
DIR
STEP
TST_MODE
Number
11
12
14
15
16
24
25
26
27
28
29
30
31
32
Type
DI VIO
DI VIO
DI VIO
DI VIO
DI VIO
AO VIO
DO VIO
DI VIO
DI VIO
DI VIO
Function
Data input of SPI interface
(Scan test input in test mode)
Serial clock input of SPI interface
(Scan test shift enable input in test mode)
Chip select input of SPI interface
Enable not input for drivers. Switches off all MOSFETs.
Clock input for all internal operations. Tie low to use internal
oscillator. A high signal disables the internal oscillator until power
down.
High side supply voltage (motor supply voltage - 10V)
Motor supply voltage
Analog mode test output. Leave open for normal operation.
stallGuard2™ output. Signals motor stall (high active).
Power GND for MOSFET drivers. Connect directly to GND
Input / output supply voltage VIO for all digital pins. Tie to digital
logic supply voltage. Allows operation in 3.3V and 5V systems.
Direction input. Is sampled upon detection of a step to determine
stepping direction. An internal glitch filter for 60ns is provided.
Step input. An internal glitch filter for 60ns is provided.
Test mode input. Puts IC into test mode. Tie to GND for normal
operation using a short wire to GND plane.
www.trinamic.com

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