TMC246 / TMC246A DATA SHEET (V2.03 / Nov. 6th, 2006)
7
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
Application Circuit / Block Diagram
R
S
R
SH
Coil A
+V
M
Coil B
100µF
220nF
N
N
NN
P
P
PP
TMC246
VT
VS
4
DAC
4
DAC
INA
INB
VREF
REFSEL
ANN
SPE
1
0
0
1
SLP
R
SLP
OSC
REFSEL
GND
AGND
Under-
voltage
Tem-
perature
OSC
VCC
1nF
100nF
SCK
SDI
SDO
CSN
ENN
BL2
BL1
[MDBN]
[PHA]
[ERR]
[PHB]
stand alone mode
[MDAN]
OA1
OA2
OB1
OB2
VSB
VSA
SRA
BRA
R
S
SRB
BRB
[...]: function in stand alone mode
VCC/2
Pin Functions
Pin
Function
Pin
Function
VS
Motor supply voltage
VT
Short to GND detection comparator –
connect to VS if not used
VCC
3.0-5.5V supply voltage for analog
and logic circuits
GND
Digital / Power ground
AGND
Analog ground (Reference for SRA,
SRB, OSC, SLP, INA, INB, SLP)
OSC
Oscillator capacitor or external clock
input for chopper
INA
Analog current control phase A
INB
Analog current control input phase B
SCK
Clock input of serial interface
SDO
Data output of serial interface (tri-
state)
SDI
Data input of serial interface
CSN
Chip select input of serial interface
ENN
Device enable (low active), and
overvoltage shutdown input
SPE
Enable SPI mode (high active). Tie to
GND for non-SPI applications
ANN
Enable analog current control via
INA and INB (low active)
SLP
Slope control resistor.
BL1, BL2
Digital blank time select
SRA, SRB
Bridge A/B current sense resistor input
OA1, OA2
Output of full-bridge A
OB1, OB2
Output of full-bridge B
VSA, VSB
Supply voltage for bridge A/B
BRA, BRB
Bridge A/B sense resistor
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