TMC262 DATASHEET (V2.07 / 2013-FEB-14)
3
TABLE OF CONTENTS
1
PRINCIPLES OF OPERATION.........................4
11 DIAGNOSTICS AND PROTECTION.............40
1.1
KEY CONCEPTS...............................................4
CONTROL INTERFACES....................................5
MECHANICAL LOAD SENSING.........................5
CURRENT CONTROL........................................5
11.1
11.2
11.3
11.4
SHORT TO GND DETECTION........................40
OPEN-LOAD DETECTION ..............................41
OVERTEMPERATURE DETECTION ...................41
UNDERVOLTAGE DETECTION.........................42
1.2
1.3
1.4
2
PIN ASSIGNMENTS...........................................6
12 POWER SUPPLY SEQUENCING....................43
13 SYSTEM CLOCK................................................44
2.1
2.2
PACKAGE OUTLINE.........................................6
SIGNAL DESCRIPTIONS..................................6
13.1
FREQUENCY SELECTION................................44
3
4
INTERNAL ARCHITECTURE .............................8
STALLGUARD2 LOAD MEASUREMENT .........9
14 MOSFET EXAMPLES.........................................45
15 EXTERNAL POWER STAGE............................46
16 LAYOUT CONSIDERATIONS.........................48
4.1
4.2
TUNING THE STALLGUARD2 THRESHOLD......10
STALLGUARD2 MEASUREMENT FREQUENCY
AND FILTERING............................................11
DETECTING A MOTOR STALL........................12
LIMITS OF STALLGUARD2 OPERATION .........12
16.1
16.2
16.3
16.4
SENSE RESISTORS........................................48
EXPOSED DIE PAD.......................................48
POWER FILTERING.......................................48
LAYOUT EXAMPLE........................................49
4.3
4.4
5
6
COOLSTEP LOAD-ADAPTIVE CURRENT
CONTROL...........................................................13
17 ABSOLUTE MAXIMUM RATINGS.................50
18 ELECTRICAL CHARACTERISTICS.................51
5.1
TUNING COOLSTEP.......................................15
SPI INTERFACE................................................16
18.1
18.2
OPERATIONAL RANGE..................................51
DC AND AC SPECIFICATIONS......................51
6.1
BUS SIGNALS...............................................16
BUS TIMING ................................................16
BUS ARCHITECTURE .....................................17
REGISTER WRITE COMMANDS......................18
DRIVER CONTROL REGISTER (DRVCTRL)....19
CHOPPER CONTROL REGISTER (CHOPCONF)
21
6.2
6.3
6.4
6.5
6.6
19 PACKAGE MECHANICAL DATA....................55
19.1
19.2
DIMENSIONAL DRAWINGS...........................55
PACKAGE CODE ...........................................55
20 DISCLAIMER.....................................................56
21 ESD SENSITIVE DEVICE................................56
22 TABLE OF FIGURES.........................................57
23 REVISION HISTORY.......................................58
24 REFERENCES......................................................58
6.7
6.8
COOLSTEP CONTROL REGISTER (SMARTEN)22
STALLGUARD2 CONTROL REGISTER
(SGCSCONF) .............................................23
DRIVER CONTROL REGISTER (DRVCONF)...24
READ RESPONSE..........................................25
DEVICE INITIALIZATION...............................26
6.9
6.10
6.11
7
STEP/DIR INTERFACE.....................................27
7.1
TIMING........................................................27
MICROSTEP TABLE.......................................28
CHANGING RESOLUTION ..............................29
MICROPLYER STEP INTERPOLATOR ...............29
STANDSTILL CURRENT REDUCTION................30
7.2
7.3
7.4
7.5
8
9
CURRENT SETTING..........................................31
8.1
SENSE RESISTORS........................................32
CHOPPER OPERATION...................................33
9.1
9.2
SPREADCYCLE MODE....................................34
CONSTANT OFF-TIME MODE........................36
10 POWER MOSFET STAGE................................38
10.1
10.2
10.3
BREAK-BEFORE-MAKE LOGIC........................38
ENN INPUT.................................................38
SLOPE CONTROL ..........................................39
www.trinamic.com
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
