TMC603A Datasheet, PDF(3/44 Page) TRINAMIC Motion Control GmbH & Co. KG. – Three phase motor driver with BLDC back EMF commutation hallFX™ and current sensing

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

TMC603A Datasheet, PDF (3/44 Pages) TRINAMIC Motion Control GmbH & Co. KG. – Three phase motor driver with BLDC back EMF commutation hallFX™ and current sensing

◁

TMC603A DATA SHEET (V. 1.15 / 2009-Nov-19)

2 Table of contents

1 FEATURES.......................................................................................................................................... 1

2 TABLE OF CONTENTS ........................................................................................................................ 3

3 SYSTEM ARCHITECTURE USING THE TMC603 ................................................................................... 5

4 PINOUT ............................................................................................................................................. 6

4.1 PACKAGE CODES ............................................................................................................................. 6

4.2 PACKAGE DIMENSIONS QFN52........................................................................................................... 7

5 TMC603 FUNCTIONAL BLOCKS .......................................................................................................... 8

5.1 BLOCK DIAGRAM AND PIN DESCRIPTION................................................................................................ 8

5.2 MOSFET DRIVER STAGE ................................................................................................................ 10

5.2.1 Principle of operation ....................................................................................................... 10

5.2.2 Break-before-make logic ................................................................................................... 11

5.2.3 PWM control via microcontroller ...................................................................................... 12

5.2.4 Slope control .................................................................................................................... 13

5.2.5 Reverse capacity (QGD) protection.................................................................................... 14

5.2.6 Considerations for QGD protection................................................................................... 15

5.2.7 Effects of the MOSFET bulk diode ..................................................................................... 16

5.2.8 Adding Schottky diodes across the MOSFET bulk diodes ................................................. 16

5.2.9 Short to GND detection .................................................................................................... 17

5.2.10 Error logic ......................................................................................................................... 17

5.2.11 Paralleling gate drivers for higher gate current ............................................................... 18

5.3 CURRENT MEASUREMENT AMPLIFIERS.................................................................................................. 19

5.3.1 Current measurement timing............................................................................................ 20

5.3.2 Auto zero cycle ................................................................................................................. 20

5.3.3 Measurement depending on chopper cycle ...................................................................... 21

5.3.4 Compensating for offset voltages .................................................................................... 21

5.3.5 Getting a precise current value using MOSFET on-resistance ........................................... 21

5.4 HALLFXâ¢ SENSORLESS COMMUTATION ............................................................................................... 22

5.4.1 Adjusting the hallFXâ¢ spike suppression time ................................................................ 23

5.4.2 Adjusting the hallFXâ¢ filter frequency............................................................................. 23

5.4.3 Block commutation chopper scheme for hallFXâ¢............................................................ 24

5.4.4 Start-up sequence for the motor with forced commutation ............................................ 24

5.5 POWER SUPPLY............................................................................................................................. 26

5.5.1 Switching regulator .......................................................................................................... 26

5.5.2 Charge pump .................................................................................................................... 28

5.5.3 Filter capacitors for switching regulator and charge pump ............................................. 28

5.5.4 Supply voltage filtering and layout considerations ......................................................... 28

5.5.5 Reverse polarity protection............................................................................................... 29

5.5.6 Standby with zero power consumption ........................................................................... 29

5.5.7 Low voltage operation down to 9V ................................................................................. 29

5.6 TEST OUTPUT................................................................................................................................ 30

5.7 ESD SENSITIVE DEVICE................................................................................................................... 30

6 ABSOLUTE MAXIMUM RATINGS ..................................................................................................... 31

7 ELECTRICAL CHARACTERISTICS...................................................................................................... 31

7.1 OPERATIONAL RANGE..................................................................................................................... 31

7.2 DC CHARACTERISTICS AND TIMING CHARACTERISTICS ........................................................................... 32

8 DESIGNING THE APPLICATION ...................................................................................................... 39

8.1 CHOOSING THE BEST FITTING POWER MOSFET .................................................................................... 39

8.1.1 Calculating the MOSFET power dissipation ...................................................................... 40

▷