Datasheet

TMC2300 DATASHEET (Rev. 1.02 / 2019-NOV-06) 12
www.trinamic.com
3.2 Standalone Stepper
EN
GND
DIE PAD
MicroPlyer
Full Bridge A
Full Bridge B
+V
M
VS
stepper
motor
N
S
OA1
OA2
OB1
OB2
BRB
BRA
R
SA
Use low inductivity SMD
type for R
SA
and R
SB
R
SB
100n
VCP
opt. driver enable
256 Microstep
Sequencer
Stand Still
Current
Reduction
100n
1.8VOUT
Place near IC with
short path to die pad
Connect directly
to GND plane
Connect directly
to GND plane
VIO/
NSTDBY
TMC2300
Step&Dir input
1.8V Voltage
regulator
Internal charge
pump
1.8V to 5V
I/O voltage
/ standby
100n
Driver Error
Configuration
Interface
MS1
MS2
STEPPER
DIAG
Microstep Resolution
(GND or VIO)
Driver error
PDN
B. Dwersteg, ©
TRINAMIC 2016
Power down
STEP
DIR
Step and Direction
motion control
Standby
detector
BRA
BRB
+V
IO
MODE
STANDBY
STANDBY
CLK oscillator
500k
No capacitor required
Disable standstill
current reduction
10µ
Or low ESR >100µF
electrolytic / depending
on supply resistance
and motor current
StealthChop2
current
controller
Figure 3.2 Standalone Stepper Operation
The standalone stepper application uses just three interface lines, to operate the stepper: STEP, DIR
and DIAG for feedback. Microstep resolution and standstill power down become pre-configured by
tying MS1, MS2 and PDN to VIO or GND. The motor current is determined by the choice of sense
resistors.
3.2.1 Configuration Pins
The TMC2300 provides three configuration pins. These pins allow quick configuration for standalone
operation.
PDN_UART: CONFIGURATION OF STANDSTILL POWER DOWN (STANDALONE STEPPER MODE)
PDN_UART
Current Setting
GND
Enable automatic power down in standstill periods
VIO
Disable automatic power down
UART interface
When using the UART interface, the power-down configuration pin is
automatically disabled. Program IHOLD as desired for standstill periods.
MS1/MS2: CONFIGURATION OF MICROSTEP RESOLUTION FOR STEP INPUT (STANDALONE STEPPER MODE)
MS2
MS1
Microstep Setting
GND
GND
8 microsteps
GND
VIO
32 microsteps
VIO
GND
64 microsteps
VIO
VIO
16 microsteps