TMC5062 DATASHEET (Rev. 1.11 / 2017-MAY-16)
12
3 Sample Circuits
The sample circuits show the connection of the external components in different operation and
supply modes. The connection of the bus interface and further digital signals is left out for clarity.
3.1 Standard Application Circuit
22n
+VM
+VM
VS
VCP
100n
100µF
charge pump
reference switch
processing
100n
4.7µ
O1A1
O1A2
VSA
Full Bridge A
Full Bridge B
N
S
5V Voltage
regulator
stepper
motor #1
5VOUT
100n
Controller 1
Driver 1
O1B1
O1B2
BR1A
BR1B
VCC
CSN/IO0
SCK/IO1
SDI/IO2
SDO/IO3
SPI interface
VS
TMC5062
100n
Single wire
interface
SWIOP
SWION
+VIO
O2A1
O2A2
Full Bridge A
Full Bridge B
N
S
stepper
motor #2
SW_SEL
optional
external
clock
Controller 2
Driver 2
ENC1A/INT
ENC1B/PP
O2B1
O2B2
BR2A
BR2B
INT & position
pulse output
12-16MHz
CLK_IN
VCC_IO
reference switch
processing
5V
100n
3.3V
TS3480
CX33*)
*) For a reliable start-up it is essential that VCC_IO comes up to a minimum of 1.5V before the TMC5062 leaves the reset condition. Therefore,
TRINAMIC recommends using a fast-start-up voltage regulator (e.g. TS3480CX33) in a 3.3V environment.
Figure 3.1 Standard application circuit
The standard application circuit uses a minimum set of additional components in order to operate the
motor. Use low ESR capacitors for filtering the power supply capable to cope with the current ripple.
The current ripple often depends on the power supply and cable length. The VCC_IO voltage can be
supplied from 5VOUT, or from a fast startup 3.3V regulator. In order to minimize linear voltage
regulator power dissipation of the internal 5V voltage regulator in applications where VM is high, a
different (lower) supply voltage can be used for VSA, if available. For best motor chopper
performance, an optional R/C-filter de-couples 5VOUT from digital noise cause by power drawn from
VCC.
Basic layout hints
Place sense resistors and all filter capacitors as close as possible to the related IC pins. Use a solid
common GND for all GND 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.
Attention
In case VSA is supplied by a different voltage source, make sure that VSA does not exceed VS by
more than one diode drop upon power up or power down.
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TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
