Datasheet

TMC220X, TMC222X DATASHEET (Rev. 1.02 / 2017-MAY-16) 9
www.trinamic.com
Pin
Number
Type
Function
STEP
16
DI
STEP input
VREF
17
AI
Analog reference voltage for current scaling or reference current for
use of internal sense resistors (optional mode)
DIR
19
DI (pd)
DIR input (internal pull down resistor)
VS
22, 28
Motor supply voltage. Provide filtering capacity near pin with
shortest possible loop to GND pad.
OA2
21
Motor coil A output 2
BRA
23
Sense resistor connection for coil A. Place sense resistor to GND near
pin. Tie to GND when using internal sense resistor.
OA1
24
Motor coil A output 1
OB1
26
Motor coil B output 1
BRB
27
Sense resistor connection for coil B. Place sense resistor to GND near
pin. Tie to GND when using internal sense resistor.
Exposed
die pad
-
Connect the exposed die pad to a GND plane. Provide as many as
possible vias for heat transfer to GND plane. Serves as GND pin for
power drivers and analogue circuitry.
2.3 Package Outline TMC2202
CPO
OB1 OA1
CLK
DIAG
MS1 MS2
GND
DIR
-
VS
-
OA2
ENN
GND
PDN_UART
5VOUT
VCP
- - - BRB -
VREF
1 2 3 4 5 6 7
24232221201918
26272829303132
1514131211109
TMC2202
QFN32
Pad=GND
8
OB2
-
VS
-
17
© B. Dwersteg,
TRINAMIC
CPI STEP
VCC_IO
16
BRA
25
Figure 2.2 TMC2202 Pinning Top View – type: QFN32, 5x5mm², 0.5mm pitch
2.4 Signal Descriptions TMC2202
Pin
Number
Type
Function
OB2
1
Motor coil B output 2
N.C.
2, 4, 21,
23, 26,
28, 29,
31
Unused pin, leave open to provide for higher creeping voltage
distances.
VS
3, 22
Motor supply voltage. Provide filtering capacity near pin with
shortest possible loop to GND pad.
ENN
5
DI
Enable not input. The power stage becomes switched off (all motor
outputs floating) when this pin becomes driven to a high level.