Datasheet

TMC246 DATA SHEET (V2.02 / Jul. 31st, 2006) 7
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
Application Circuit / Block Diagram
R
S
R
SH
Coil A
+V
M
Coil B
100µF220nF
NN
NN
PP
PP
TMC246
VT
VS
4
DAC
4
DAC
INA
INB
VREF
REFSEL
PWM-CTRL
ANNSPE
1
0
0
1
Current Controlled
Gate Drivers
Current Controlled
Gate Drivers
SLP
R
SLP
PWM-CTRL
OSC
Control & Diagnosis
Parallel
Control
SPI-
Interface
REFSEL
GNDAGND
Under-
voltage
Tem-
perature
OSC
VCC
1nF
100nF
+V
CC
SCK
SDI
SDO
CSN
ENN
BL2BL1
[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
Load
mesure-
ment
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