TMC260 and TMC261 DATASHEET (Rev. 2.05 / 2012-NOV-05)
8
3
Internal Architecture
+V
M
9-39V / 9-59V
100n
16V
100n
VHS
+V
CC
3.3V or 5V
VCC_IO
100n
D
VS
TMC260 / TMC261
OSC
15MHz
VM-10V
linear
regulator
slope HS VHS
5V linear
regulator
5VOUT
5V supply
470nF
8-20MHz
CLK
D
Clock
selector
Step &
Direction
interface
Step multiply
16 à 256
Sine wave
1024 entry
+V
M
VSA
Provide sufficient filtering capacity
near bridge supply (electrolyt
capacitors and ceramic capacitors)
CLK
ENABLE
step & dir
(optional)
STEP
DIR
P-Gate
drivers
Break
before
make
Short to
GND
detectors
S
G
D
G
S
D
D
D
OA1
OA2
D
D
G
S
S
G
Phase polarity
Chopper
logic
motor coil A
0.16V
0.30V
VSENSE
SIN &
COS
N-Gate
drivers
V
REF
BRA
SRA
10R
150mΩ
R
SENSE
for 1.8A peak
(resp. 1A peak)
TEST_SE
ENABLE
CSN
SCK
SPI
SDI
SDO
D
D
Digital
control
M
U
X
SPI interface
9
slope LS +5V
DAC
D
D
D
D
9
DAC
slope LS +5V
SRB
10R
150mΩ
R
SENSE
for 1.8A peak
(resp. 1A peak)
BRB
CoolStep
Energy
efficiency
N-Gate
drivers
BACK
EMF
SHORT
TO GND
ENABLE
Temperature
sensor
100°C, 150°C
S
G
D
G
D
S
optional input protection
resistors against inductive sparks
upon motor cable break
stallGuard
output
SG_TST
OB2
Phase polarity
D
stallGuard 2
Protection &
Diagnostics
Chopper
logic
Break
before
make
Short to
GND
detectors
D
D
G
S
S
OB1
motor coil B
P-Gate
drivers
G
VSB
+V
M
slope HS VHS
GND
TEST_ANA
Figure 3.1 TMC260 and TMC261 block diagram
P
ROMINENT FEATURES INCLUDE
:
Oscillator and clock selector
Step and direction interface
SPI interface
Multiplexer
Multipliers
provide the system clock from the on-chip oscillator or an external
source.
uses a microstep counter and sine table to generate target currents
for the coils.
receives commands that directly set the coil current values.
selects either the output of the sine table or the SPI interface for
controlling the current into the motor coils.
scale down the currents to both coils when the currents are
greater than those required by the load on the motor or as set by
the CS current scale parameter.
convert the digital current values to analog signals that are
compared with the voltages on the sense resistors. Comparator
outputs terminate chopper drive phases when target currents are
reached.
ensure non-overlapping pulses, boost pulse voltage, and control
pulse slope to the gates of the power MOSFETs.
provide high-side voltage for P-channel MOSFET gate drivers and
supply voltage for on-chip analog and digital circuits.
DACs and comparators
Break-before-make and gate drivers
On-chip voltage regulators
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TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
