Datasheet
TMC5062 DATASHEET (Rev. 1.11 / 2017-MAY-16) 14
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3.2 5 V Only Supply
VCC_IO
TMC5062
SPI interface
CSN/IO0
SCK/IO1
SDO/IO3
SDI/IO2
reference switch
processing
REFL1
REFR1
reference switch
processing
Controller 2
Single wire
interface
5V Voltage
regulator
charge pump
VCP
22n
100n
SWION
SW_SEL
CLK_IN
REFL2
REFR2
SWIOP
+5V
5VOUT
VSA
4.7µ
+V
IO
ENC1A/INT
ENC1B/PP
INT & position
pulse output
DRV_ENN
DRV_ENN
GNDP
GND
GNDA
TST_MODE
DIE PAD
VCC
opt. ext. clock
12-16MHz
3.3V or 5V
I/O voltage
100n
470n
Controller 1
Full Bridge A
Full Bridge B
+5V
VS
stepper
motor #1
N
S
O1A1
O1A2
BR1A
R
S1B
O1B1
O1B2
Driver 1
100n
BR1B
R
S1A
Full Bridge A
Full Bridge B
stepper
motor #2
N
S
O2A1
O2A2
BR2A
R
S2B
O2B1
O2B2
Driver 2
BR2B
R
S2A
VS
100n
+5V
100µF
CPI
CPO
+V
IO
Figure 3.3 5V only operation
While the standard application circuit is limited to roughly 5.5 V lower supply voltage, a 5 V only
application lets the IC run from a normal 5 V +/-5% supply. In this application, linear regulator drop
must be minimized. Therefore, the major 5 V load is removed by supplying VCC directly from the
external supply. In order to keep supply ripple away from the analog voltage reference, 5VOUT should
have an own filtering capacity and the 5VOUT pin does not become bridged to the 5V supply.