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TMC248-LA Datasheet(PDF) 3 Page - TRINAMIC Motion Control GmbH & Co. KG. |
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TMC248-LA Datasheet(HTML) 3 Page - TRINAMIC Motion Control GmbH & Co. KG. |
3 / 40 page TMC248 DATASHEET (Rev. 1.01 / 2013-MAR-26) 3 www.trinamic.com TABLE OF CONTENTS 1 KEY CONCEPTS 4 1.1 ADVANCED FEATURES 5 1.2 CONTROL INTERFACES 5 2 PIN ASSIGNMENTS 6 2.1 PACKAGE OUTLINE 6 2.2 SIGNAL DESCRIPTIONS 6 3 STALLGUARD - STALL DETECTION AND REFERENCE SEARCH 7 3.1 STALL GUARD MEASUREMENT 7 3.2 IMPLEMENTING SENSORLESS STALL DETECTION 9 4 SPI INTERFACE 10 4.1 BUS SIGNALS 10 4.2 MOTOR COIL CURRENT SETTING VIA SPI 11 4.3 BASE CURRENT CONTROL MODE VIA INA / INB IN SPI MODE 11 4.4 CONTROLLING POWER DOWN VIA THE SPI INTERFACE 13 4.5 OPEN LOAD DETECTION 13 4.6 STANDBY AND SHUTDOWN MODE 13 4.7 POWER SAVING 13 4.8 BUS TIMING 14 4.9 USING THE SPI INTERFACE WITH ONE OR MULTIPLE DEVICES 14 4.10 SPI FILTER 14 5 CLASSICAL NON-SPI CONTROL MODE (STANDALONE MODE) 15 5.1 PIN FUNCTIONS IN STANDALONE MODE 15 5.2 INPUT SIGNALS FOR MICROSTEP CONTROL IN STANDALONE MODE 15 6 CURRENT SETTING 16 6.1 SENSE RESISTOR FOR CURRENT SETTING 16 6.2 RESISTOR R SH FOR HIGH SIDE OVERCURRENT DETECTION 16 7 CHOPPER OPERATION 18 7.1 MIXED DECAY MODE 18 7.2 CHOPPER FREQUENCY 19 7.3 VOLTAGE PWM MODE FOR LOW NOISE CHOPPER 20 7.4 ADAPTING THE SINE WAVE FOR SMOOTH MOTOR OPERATION 22 7.5 BLANK TIME 23 8 SLOPE CONTROL 24 9 PROTECTION FUNCTIONS 25 9.1 OVERCURRENT PROTECTION AND DIAGNOSTIC 25 9.2 OVER TEMPERATURE PROTECTION AND DIAGNOSTIC 25 9.3 OVERVOLTAGE PROTECTION AND ENN PIN BEHAVIOR 26 10 MICROSTEP RESOLUTION 27 11 MOSFET EXAMPLES 28 12 LAYOUT CONSIDERATIONS 30 12.1 GROUNDING 30 12.2 FILTERING CAPACITORS 30 12.3 PULL-UP RESISTORS ON UNUSED INPUTS 31 12.4 POWER SUPPLY SEQUENCING CONSIDERATIONS 31 12.5 LAYOUT EXAMPLE 32 13 ABSOLUTE MAXIMUM RATINGS 33 14 ELECTRICAL CHARACTERISTICS 34 14.1 OPERATIONAL RANGE 34 14.2 DC SPECIFICATIONS 34 14.3 AC SPECIFICATIONS 36 14.4 THERMAL PROTECTION 36 15 PACKAGE MECHANICAL DATA 37 15.1 DIMENSIONAL DRAWINGS 37 15.2 PACKAGE CODE 37 16 DISCLAIMER 38 17 ESD SENSITIVE DEVICE 38 18 TABLE OF FIGURES 39 19 REVISION HISTORY 40 20 REFERENCES 40 |
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