TMC236_14 Datasheet, PDF (2/27 Pages) TRINAMIC Motion Control GmbH & Co. KG. – Stepper motor

TMC236/A DATA SHEET (V2.07 / 2011-Aug-10)
2
FEATURES.............................................................................................................................................. 1
PINNING .................................................................................................................................................. 5
PACKAGE CODES.................................................................................................................................... 5
PQFP44 DIMENSIONS............................................................................................................................ 6
APPLICATION CIRCUIT / BLOCK DIAGRAM ....................................................................................... 7
PIN FUNCTIONS...................................................................................................................................... 7
LAYOUT CONSIDERATIONS ................................................................................................................ 8
CONTROL VIA THE SPI INTERFACE ................................................................................................... 9
SERIAL DATA WORD TRANSMITTED TO TMC236....................................................................................... 9
SERIAL DATA WORD TRANSMITTED FROM TMC236 .................................................................................. 9
TYPICAL WINDING CURRENT VALUES ..................................................................................................... 10
BASE CURRENT CONTROL VIA INA AND INB IN SPI MODE ....................................................................... 10
CONTROLLING THE POWER DOWN MODE VIA THE SPI INTERFACE ........................................................... 10
OPEN LOAD DETECTION ........................................................................................................................ 11
STANDBY AND SHUTDOWN MODE........................................................................................................... 11
POWER SAVING.................................................................................................................................... 11
PROTECTION FUNCTIONS ................................................................................................................. 12
OVERCURRENT PROTECTION AND DIAGNOSIS ........................................................................................ 12
OVERTEMPERATURE PROTECTION AND DIAGNOSIS................................................................................. 12
OVERVOLTAGE PROTECTION AND ENN PIN BEHAVIOR............................................................................ 12
CHOPPER PRINCIPLE ......................................................................................................................... 13
CHOPPER CYCLE / USING THE MIXED DECAY FEATURE............................................................................ 13
ADAPTING THE SINE WAVE FOR SMOOTH MOTOR OPERATION .................................................................. 14
BLANK TIME ......................................................................................................................................... 14
BLANK TIME SETTINGS .......................................................................................................................... 14
CLASSICAL NON-SPI CONTROL MODE (STAND ALONE MODE) .................................................. 15
PIN FUNCTIONS IN STAND ALONE MODE.................................................................................................. 15
INPUT SIGNALS FOR MICROSTEP CONTROL IN STAND ALONE MODE .......................................................... 15
CALCULATION OF THE EXTERNAL COMPONENTS ....................................................................... 16
SENSE RESISTOR................................................................................................................................. 16
EXAMPLES FOR SENSE RESISTOR SETTINGS .......................................................................................... 16
HIGH SIDE OVERCURRENT DETECTION RESISTOR R_SH ............................................................................ 16
MAKING THE CIRCUIT SHORT CIRCUIT PROOF ......................................................................................... 17
OSCILLATOR CAPACITOR ...................................................................................................................... 18
TABLE OF OSCILLATOR FREQUENCIES.................................................................................................... 18
PULL-UP RESISTORS ON UNUSED INPUTS ............................................................................................... 18
POWER SUPPLY SEQUENCING CONSIDERATIONS .................................................................................... 18
SLOPE CONTROL RESISTOR ................................................................................................................. 19
EXAMPLE FOR SLOPE SETTINGS ............................................................................................................ 19
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 20
ELECTRICAL CHARACTERISTICS..................................................................................................... 20
OPERATIONAL RANGE .......................................................................................................................... 20
DC CHARACTERISTICS ......................................................................................................................... 21
AC CHARACTERISTICS ......................................................................................................................... 22
THERMAL PROTECTION (1) ................................................................................................................... 22
THERMAL CHARACTERISTICS ................................................................................................................ 23
TYPICAL POWER DISSIPATION AT HIGH LOAD / HIGH TEMPERATURE ........................................................ 23
SPI INTERFACE TIMING...................................................................................................................... 24
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