Datasheet
TMC5160 DATASHEET (Rev. 1.01 / 2017-NOV-29) 15
www.trinamic.com
3 Sample Circuits
The following sample circuits show the required external components in different operation and
supply modes. The connection of the bus interface and further digital signals are left out for clarity.
3.1 Standard Application Circuit
47R
47R
LS
VCC_IO
TMC5160
SPI interface
CSN
SCK
SDO
SDI
reference switch
processing
REFL/STEP
REFR/DIR
DIAG / INT out
and
Single wire
interface
5V Voltage
regulator
charge pump
22n
100V
100n
16V
DIAG0/SWN
CLK_IN
DIAG1/SWP
+V
M
5VOUT
VSA
2.2µ
+V
IO
DRV_ENN
GNDD
GNDA
TST_MODE
DIE PAD
VCC
opt. ext. clock
12-16MHz
3.3V or 5V
I/O voltage
100n
100n
Controller
LS
stepper
motor
N
S
BMA2
Chopper
100n
SRAH
C
E
Optional use lower
voltage down to 12V
2R2
470n
Use low inductivity SMD
type, e.g. 1210 or 2512
resistor for R
S
!
Encoder
unit
A B N
ENCB_DCEN
ENCA_DCIN
ENCN_DCO
Encoder input /
dcStep control in S/D
mode
SD_MODE
SPI_MODE
opt. driver enable
B.Dwersteg, ©
TRINAMIC 2014
R
S
SRAL
LA1
LA2
HA1
HA2
BMA1
HS
HS
CA1
C
B
CA2
C
B
+V
M
LS
LS
BMB2
SRBH
R
S
SRBL
LB1
LB2
HB1
HB2
BMB1
HS
HS
CB1
C
B
CB2
C
B
+V
M
Both GND: UART mode
CPI
CPO
VCP
VS
11.5V Voltage
regulator
12VOUT
2.2µ
mode selection
Bootstrap capacitors C
B
:
220nF for MOSFETs with Q
G
<20nC, 470nF for larger Q
G
470n
470n
Keep inductivity of the fat
interconnections as small
as possible to avoid
undershoot of BM <-5V!
R
G
R
G
R
G
R
G
R
G
R
G
R
G
R
G
Slope control resistors R
G
: Adapt to MOSFET to yield slopes of roughly
100ns. Slope must be slower than bulk diode recovery time.
47R
47R
+V
IO
pd pd pd
+V
IO
Figure 3.1 Standard application circuit
The standard application circuit uses a minimum set of additional components. Eight MOSFETs are
selected for the desired current, voltage and package type. Two sense resistors set the motor coil
current. See chapter 9 to choose the right value for sense resistors. Use low ESR capacitors for
filtering the power supply. A minimum capacity of 100µF per ampere of coil current near to the power
bridge is recommended for best performance. The capacitors need to cope with the current ripple
caused by chopper operation. Current ripple in the supply capacitors also depends on the power
supply internal resistance and cable length. VCC_IO can be supplied from 5VOUT, or from an external
source, e.g. a 3.3V regulator. In order to minimize linear voltage regulator power dissipation of the
internal 5V and 11.5V voltage regulators in applications where VM is high, a different (lower) supply
voltage should be used for VSA (see chapter 3.2).
Basic layout hints
Place sense resistors and all filter capacitors as close as possible to the power MOSFETs. Place the
TMC5160 near to the MOSFETs and use short interconnection lines in order to minimize parasitic trace
inductance. Use a solid common GND for all GND, GNDA and GNDD connections, also for sense
resistor GND. Connect 5VOUT filtering capacitor directly to 5VOUT and GNDA pin. See layout hints for
more details. Low ESR electrolytic capacitors are recommended for VS filtering.