TMC5031 DATASHEET (Rev. 1.07 / 2013-APR-30)
4
1 Principles of Operation
ref. / stop switches motor 1
REFR1
REFL1
+V
M
VCP
100n
TMC5031
Dual stepper motor
driver / controller
CPI
CPO
22n
F
F
reference switch
processing
charge pump
2x linear 6 point
RAMP generator
5V Voltage
regulator
Step &
Direction pulse
generation
programmable
sine table
4*256 entry
otor
ep m
t
coolS river
d
DRV_ENN
100n
+V
M
VS
Half Bridge 1
Half Bridge 1
Stepper
#1
S
N
O1A1
O1A2
O1B1
x
chopper
Half Bridge 2
Half Bridge 2
2 phase
stepper
motor
VSA
100n
4.7µ
5VOUT
VCC
l
ontro
io n c
Mot
Control register
set
SINGLEDRV
O1B2
BR1A / B
coolStep™
R
SENSE
R
SENSE
GNDP
stallGuard2™
temperature
measurement
2 x current
comparator
2 x DAC
R
SENSE
=0R25 allows for
maximum coil current
SPI™
CSN
SCK
SDI
SDO
SPI interface
f ac
Inter
e
Stepper driver
Protection
& diagnostics
CLK oscillator/
selector
stallGuard2™
2 x current
comparator
2 x DAC
GNDP
R
SENSE
R
SENSE
ntrol
o n co
Moti
INT
interrupt out
opt. ext. clock
12-16MHz
+V
IO
3.3V or 5V
I/O voltage
100n
coolStep™
BR2A / B
Step &
Direction pulse
generation
Half Bridge 2
Half Bridge 2
programmable
sine table
4*256 entry
O2B2
O2B1
PP
CLK_IN
VCC_IO
INT & position
pulse output
2x linear 6 point
RAMP generator
x
chopper
reference switch
processing
F
F
to
p mo
olSte er
co
driv
DIE PAD
GNDA
GND
r
F = 60ns spike filter
O2A2
Half Bridge 1
Half Bridge 1
S
N
O2A1
VS
100n
2 phase
stepper
motor
+V
M
Stepper
#2
Figure 1.1 Basic application and block diagram
The TMC5031 motion controller and driver chip is an intelligent power component interfacing between
the CPU and up to two stepper motors. The TMC5031 offers a number of unique enhancements which
are enabled by the system-on-chip integration of driver and controller. The sixPoint ramp generator of
the TMC5031 uses coolStep and stallGuard2 automatically to optimize every motor movement:
TRINAMICs special features contribute toward lower system cost, greater precision, greater energy
efficiency, smoother motion, and cooler operation in stepper motor applications. The clear concept
and the comprehensive solution save design-in time.
1.1 Key Concepts
The TMC5031 implements several advanced 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™
High-precision load measurement using the back EMF on the motor 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.
In addition to these performance enhancements, TRINAMIC motor drivers also offer safeguards to
detect and protect against shorted outputs, output open-circuit, overtemperature, and undervoltage
conditions for enhancing safety and recovery from equipment malfunctions.
TST_MODE
ref. / stop switches motor 2
opt. driver enable
REFL2
REFR2
DRV_ENN
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TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
