TMC236/A DATA SHEET (V2.07 / 2011-Aug-10)
1
TMC236/A – DATA SHEET
High current, low power dissipation microstep
stepper motor driver with protection /
diagnostics and SPI Interface
TRINAMIC Motion Control GmbH & Co KG
Hamburg, Germany
®
WWW.TRINAMIC.COM
Features
The TMC236 / TMC236A (1) is a dual full bridge driver IC for bipolar stepper motor control
applications. It is realized in a HVCMOS technology combined with Low-RDS-ON high efficiency
MOSFETs (pat. pend.). It allows driving a coil current of up to 1500mA even at high environment
temperatures. Its low current consumption and high efficiency together with the miniature package
make it a perfect solution for embedded motion control and for battery powered devices. The low
power dissipation makes the TMC236 an optimum choice for drives, where a high reliability is desired.
Internal DACs allow microstepping as well as smart current control. The device can be controlled by a
i
serial interface (SPI™ ) or by analog / digital input signals. Short circuit, temperature, undervoltage and
overvoltage protection are integrated.
Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals
Short circuit, overvoltage and over temperature protection integrated
Status flags for overcurrent, open load, over temperature, temperature pre-warning, undervoltage
Integrated 4 bit DACs allow up to 16 times microstepping via SPI (can be expanded to 64
microsteps)
Any resolution via analog control
Mixed decay feature for smooth motor operation
Slope control user programmable to reduce electromagnetic emissions
Chopper frequency programmable via a single capacitor or external clock
Current control allows cool motor and driver operation
Internal open load detector
7V to 34V motor supply voltage (A-type)
Up to 1500mA output current and more than 800mA at 105°C
3.3V or 5V operation for digital part
Low power dissipation via low RDS-ON power stage
Standby and shutdown mode available
(1) The term TMC236 in this datasheet always refers to the TMC236A and the TMC236. The major
differences in the older TMC236 are explicitly marked with “non-A-type”. The TMC236A brings a
number of enhancements and is fully backward compatible to the TMC236
Copyright © 2004, TRINAMIC Motion Control GmbH & Co KG
TMC236/A DATA SHEET (V2.07 / 2011-Aug-10)
2
FEATURES.............................................................................................................................................. 1
PINNING .................................................................................................................................................. 5
P
ACKAGE CODES
.................................................................................................................................... 5
PQFP44 D
IMENSIONS
............................................................................................................................ 6
APPLICATION CIRCUIT / BLOCK DIAGRAM ....................................................................................... 7
P
IN
F
UNCTIONS
...................................................................................................................................... 7
LAYOUT CONSIDERATIONS ................................................................................................................ 8
CONTROL VIA THE SPI INTERFACE ................................................................................................... 9
S
ERIAL DATA WORD TRANSMITTED TO
TMC236....................................................................................... 9
S
ERIAL DATA WORD TRANSMITTED FROM
TMC236 .................................................................................. 9
T
YPICAL WINDING CURRENT VALUES
..................................................................................................... 10
B
ASE CURRENT CONTROL VIA
INA
AND
INB
IN
SPI
MODE
....................................................................... 10
C
ONTROLLING THE POWER DOWN MODE VIA THE
SPI
INTERFACE
........................................................... 10
O
PEN LOAD DETECTION
........................................................................................................................ 11
S
TANDBY AND SHUTDOWN MODE
........................................................................................................... 11
P
OWER SAVING
.................................................................................................................................... 11
PROTECTION FUNCTIONS ................................................................................................................. 12
O
VERCURRENT PROTECTION AND DIAGNOSIS
........................................................................................ 12
O
VERTEMPERATURE PROTECTION AND DIAGNOSIS
................................................................................. 12
O
VERVOLTAGE PROTECTION AND
ENN
PIN BEHAVIOR
............................................................................ 12
CHOPPER PRINCIPLE ......................................................................................................................... 13
C
HOPPER CYCLE
/ U
SING THE MIXED DECAY FEATURE
............................................................................ 13
A
DAPTING THE SINE WAVE FOR SMOOTH MOTOR OPERATION
.................................................................. 14
B
LANK
T
IME
......................................................................................................................................... 14
B
LANK TIME SETTINGS
.......................................................................................................................... 14
CLASSICAL NON-SPI CONTROL MODE (STAND ALONE MODE) .................................................. 15
P
IN FUNCTIONS IN STAND ALONE MODE
.................................................................................................. 15
I
NPUT SIGNALS FOR MICROSTEP CONTROL IN STAND ALONE MODE
.......................................................... 15
CALCULATION OF THE EXTERNAL COMPONENTS ....................................................................... 16
S
ENSE
R
ESISTOR
................................................................................................................................. 16
E
XAMPLES FOR SENSE RESISTOR SETTINGS
.......................................................................................... 16
H
IGH SIDE OVERCURRENT DETECTION RESISTOR
R
SH
............................................................................ 16
M
AKING THE CIRCUIT SHORT CIRCUIT PROOF
......................................................................................... 17
O
SCILLATOR
C
APACITOR
...................................................................................................................... 18
T
ABLE OF OSCILLATOR FREQUENCIES
.................................................................................................... 18
P
ULL
-
UP RESISTORS ON UNUSED INPUTS
............................................................................................... 18
P
OWER SUPPLY SEQUENCING CONSIDERATIONS
.................................................................................... 18
S
LOPE
C
ONTROL
R
ESISTOR
................................................................................................................. 19
E
XAMPLE FOR SLOPE SETTINGS
............................................................................................................ 19
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 20
ELECTRICAL CHARACTERISTICS ..................................................................................................... 20
O
PERATIONAL
R
ANGE
.......................................................................................................................... 20
DC C
HARACTERISTICS
......................................................................................................................... 21
AC C
HARACTERISTICS
......................................................................................................................... 22
T
HERMAL
P
ROTECTION
(1) ................................................................................................................... 22
T
HERMAL
C
HARACTERISTICS
................................................................................................................ 23
T
YPICAL
P
OWER
D
ISSIPATION AT HIGH LOAD
/
HIGH TEMPERATURE
........................................................ 23
SPI INTERFACE TIMING ...................................................................................................................... 24
Copyright © 2004, TRINAMIC Motion Control GmbH & Co KG
TMC236/A DATA SHEET (V2.07 / 2011-Aug-10)
4
Life support policy
TRINAMIC Motion Control GmbH & Co KG does not
authorize or warrant any of its products for use in life
support systems, without the specific written consent
of TRINAMIC Motion Control GmbH & Co KG.
Life support systems are equipment intended to
support or sustain life, and whose failure to perform,
when properly used in accordance with instructions
provided, can be reasonably expected to result in
personal injury or death.
© TRINAMIC Motion Control GmbH & Co KG 2005
Information given in this data sheet is believed to be
accurate and reliable. However no responsibility is
assumed for the consequences of its use nor for any
infringement of patents or other rights of third
parties, which may result from its use.
Specifications subject to change without notice.
Copyright © 2004, TRINAMIC Motion Control GmbH & Co KG
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