Datasheet TMC2590 (TRINAMIC) - 3

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TABLE OF CONTENTS 1 PRINCIPLES OF OPERATION ... 4
11.1 BREAK-BEFORE-MAKE LOGIC ... 43 11.2 ENN INPUT ... 43 1.1 KEY CONCEPTS ... 4 11.3 SLOPE CONTROL .. 43 1.2 CONTROL INTERFACES .. 5 1.3 MECHANICAL LOAD SENSING ... 5
12 DIAGNOSTICS AND PROTECTION ... 45
1.4 CURRENT CONTROL .. 5 12.1 SHORT PROTECTION ... 45
2 PIN ASSIGNMENTS ... 6
12.2 OPEN-LOAD DETECTION .. 46 12.3 TEMPERATURE SENSORS ... 47 2.1 PACKAGE OUTLINE ... 6 12.4 UNDERVOLTAGE DETECTION ... 47 2.2 SIGNAL DESCRIPTIONS .. 6
13 POWER SUPPLY SEQUENCING .. 49 3 INTERNAL ARCHITECTURE ... 8 14 SYSTEM CLOCK .. 49
3.1 STANDARD APPLICATION CIRCUIT .. 9 14.1 SYSTEM CLOCK FREQUENCY ... 50
4 STANDALONE OPERATION ... 10 15 MOSFET EXAMPLES ... 51 5 STALLGUARD2 LOAD MEASUREMENT ... 11 16 LAYOUT CONSIDERATIONS ... 52
5.1 TUNING THE STALLGUARD2 THRESHOLD .. 12 5.2 STALLGUARD2 MEASUREMENT FREQUENCY 16.1 SENSE RESISTORS .. 52 AND FILTERING .. 13 16.2 EXPOSED DIE PAD ... 52 5.3 DETECTING A MOTOR STALL .. 14 16.3 POWER FILTERING ... 52 5.4 LIMITS OF STALLGUARD2 OPERATION ... 14 16.4 LAYOUT EXAMPLE .. 53
6 COOLSTEP LOAD-ADAPTIVE CURRENT 17 ABSOLUTE MAXIMUM RATINGS ... 55 CONTROL ... 15 18 ELECTRICAL CHARACTERISTICS ... 56
6.1 TUNING COOLSTEP .. 17 18.1 OPERATIONAL RANGE .. 56
7 SPI INTERFACE .. 18
18.2 DC AND AC SPECIFICATIONS .. 56 7.1 BUS SIGNALS ... 18
19 PACKAGE MECHANICAL DATA .. 60
7.2 BUS TIMING .. 18 19.1 DIMENSIONAL DRAWINGS ... 60 7.3 BUS ARCHITECTURE ... 19 19.2 PACKAGE CODE.. 61 7.4 REGISTER WRITE COMMANDS .. 20 7.5 DRIVER CONTROL REGISTER (DRVCTRL) .. 22
20 DISCLAIMER ... 62
7.6 CHOPPER CONTROL REGISTER (CHOPCONF) ..
21 ESD SENSITIVE DEVICE .. 62
... 24 7.7 COOLSTEP CONTROL REGISTER (SMARTEN)
22 TABLE OF FIGURES ... 63
25
23 REVISION HISTORY ... 64
7.8 STALLGUARD2 CONTROL REGISTER (SGCSCONF).. 26
24 REFERENCES .. 64
7.9 DRIVER CONTROL REGISTER (DRVCONF) ... 27 7.10 READ RESPONSE .. 29 7.11 DEVICE INITIALIZATION ... 30
8 STEP/DIR INTERFACE ... 31
8.1 TIMING .. 31 8.2 MICROSTEP TABLE ... 32 8.3 CHANGING RESOLUTION .. 33 8.4 MICROPLYER STEP INTERPOLATOR ... 33 8.5 STANDSTILL CURRENT REDUCTION ... 34
9 CURRENT SETTING .. 35
9.1 SENSE RESISTORS .. 36
10 CHOPPER OPERATION ... 37
10.1 SPREADCYCLE CHOPPER ... 38 10.2 CLASSIC CONSTANT OFF-TIME CHOPPER.. 41
11 POWER MOSFET STAGE .. 43
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