Datasheet

TMC6200 DATASHEET (Rev. 1.04 / 2019-AUG-08) 10
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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
VCC_IO
TMC6200
SPI interface
CSN / IDRV0
SCK / IDRV1
SDO / SINGLE
SDI / AMPLx10
Diagnostics
(Short circuit,
Temperature)
5V Regulator
Charge Pump
22n
100V
100n
16V
FAULT
+V
M
5VOUT
VSA
2.2µ
+V
IO
DRV_EN
GNDA
DIE PAD
3.3V or 5V
I/O voltage
100n
100n
3 Phase
Motor
Break before
Make logic
100n
C
E
Optional use lower
voltage down to 12V
Use low inductivity SMD
type, e.g. 1210 or 2512
resistor for R
S
!
IU IV
CURV
CURU
CURW
Current Sense
outputs
SPE
Driver Enable
(positive active)
B.Dwersteg, ©
TRINAMIC 2014
LS
USENSE
LSU
HSU
U
HS
CU
C
B
+V
M
GND: Stand alone,
VIO: SPI interface mode
CPI CPO VCP VS
Gate Voltage
Regulator
12VOUT
4.7µ
Bootstrap capacitors C
B
:
For MOSFETs with Q
G
<40nC: min. 470nF, 16V
1µF for larger Q
G
- use minimum 4.7µF on 12VOUT pin
470n
Keep inductivity of the fat
interconnections as small as
possible to avoid undershoot
of U/V/W < -5V!
R
G
R
G
Optional slope control resistors R
G
:
In case of MOSFETs <20nC, adapt to MOSFET to yield slopes of
roughly 50ns. Slope must be slower than bulk diode recovery time.
1Ohm to 2.2Ohm recommended for larger MOSFETs.
May be left away with compact, low inducivity routing of power stage.
+V
IO
pd
pd
+V
IO
Driver Strength [IDRV1 IDRV0]:
00: 0.5A 01: 0.5/1A, 10: 1A, 11: 1.5A
Settings in Standalone
mode (SPE=0)
Sense Amplification 0: 5*, 1: 10*
0: xH/xL individual gate control
1: xH=Polarity, xL=Enable control
WL
WH
VL
VH
UL
UH
pd
pd
pd
pd
pd
N
S
RS
R
P
R
P
(optional 10 Ohm to 22
Ohm) protects the sense
amplifier against excessive
spikes on RS
12VOUT
I
T
VCP
VOFS
LS
VSENSE
LSV
HSV
V
HS
CV
C
B
R
G
R
G
RS
R
P
12VOUT
VCP
LS
WSENSE
LSW
HSW
W
HS
CW
C
B
R
G
R
G
RS
R
P
12VOUT
VCP
I
T
I
T
IV
+
VOFS
IW
+
5VOUT
VOFS
24MHz Oscillator
OTP memory
CLK_INopt. ext. Clock 8-33MHz
+
500k
250k
VOFS
SPI interface
(SPE=1)
Figure 3.1 Standard application circuit
The standard application circuit uses a minimum set of additional components. Six MOSFETs are
selected for the desired current, voltage and package type. Two or three sense resistors are matched
to the maximum motor coil current, and to the desired current sensor output swing and amplification
setting. See chapter 0 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 keeping power supply ripple low. 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. Supply VCC_IO 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, when available (see chapter 3.2).
Important layout hints
Place sense resistors and all filter capacitors as close as possible to the power MOSFETs. Place the
TMC6200 near to the MOSFETs and use short interconnection lines in order to minimize parasitic trace
inductance. Use a solid common GND for all GND and GNDA connections. 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.