Datasheet
TMC2660 DATASHEET (Rev. 1.05 / 2016-JUL-14) 6
www.trinamic.com
2 Pin Assignments
2.1 Package Outline
1
9
4
12
17
14
15
16
22
18
21
13
19
20
33
25
30
41
44
43
42
39
36
35
40
38
37
34
TMC2660-PA
QFP44
-
OB1
OB1
OB2
OB2
BRB
VSB
DIR
GND
TST_MODE
STEP
GND
VS
VHS
VCC_IO
SG_TST
TST_ANA
-
-
OA1
OA2
OA2
OA1
BRA
VSA
SRA
GND
SDO
SDI
SCK
SRB
CSN
CLK
5VOUT
ENN
-
2
3
5
6
7
8
10
11
24
23
27
26
29
28
32
31
Figure 2.1 TMC2660 pin assignment
2.2 Signal Descriptions
Pin
Number
Type
Function
OA1
2, 3
7, 8
O (VS)
Bridge A1 output. Interconnect all of these pins using thick traces
capable to carry the motor current and distribute heat into the PCB.
OA2
5, 6
10, 11
O (VS)
Bridge A2 output. Interconnect all of these pins using thick traces
capable to carry the motor current and distribute heat into the PCB.
OB1
26, 27
31, 32
O (VS)
Bridge B1 output. Interconnect all of these pins using thick traces
capable to carry the motor current and distribute heat into the PCB.
OB2
23, 24
28, 29
O (VS)
Bridge B2 output. Interconnect all of these pins using thick traces
capable to carry the motor current and distribute heat into the PCB.
VSA
VSB
4
30
Bridge A/B positive power supply. Connect to VS and provide
sufficient filtering capacity for chopper current ripple.
BRA
BRB
9
25
AI
Bridge A/B negative power supply via sense resistor in bridge foot
point.
SRA
SRB
12
22
AI
Sense resistor inputs for chopper current regulation.
5VOUT
13
Output of the on-chip 5V linear regulator. This voltage is used to
supply the low-side MOSFETs and internal analog circuitry. An
external capacitor to GND close to the pin is required. Place the
capacitor near pins 13 and 17. A 470nF ceramic capacitor is
sufficient.
SDO
14
DO VIO
SPI serial data output.