TMC603A Datasheet, PDF (43/44 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)
43
9 Table of figures
FIGURE 1: APPLICATION BLOCK DIAGRAM ..................................................................................................... 5
FIGURE 2: PINNING / QFN52 PACKAGE (TOP VIEW)....................................................................................... 6
FIGURE 3: APPLICATION DIAGRAM................................................................................................................ 8
FIGURE 4: THREE PHASE BLDC DRIVER..................................................................................................... 10
FIGURE 5: PRINCIPLE OF HIGH-SIDE DRIVER (PAT. FIL.) ............................................................................... 10
FIGURE 6: BRIDGE DRIVER TIMING ............................................................................................................. 12
FIGURE 7: EXAMPLES FOR MICROCONTROLLER PWM CONTROL.................................................................. 13
FIGURE 8: MOSFET GATE CHARGE AS AVAILABLE IN DEVICE DATA SHEET VS. SWITCHING EVENT ................. 13
FIGURE 9: QGD PROTECTED DRIVER STAGE .............................................................................................. 14
FIGURE 10: EFFECT OF BULK DIODE RECOVERY.......................................................................................... 16
FIGURE 11: PARALLEL SCHOTTKY DIODE AVOIDS CURRENT SPIKES DUE TO BULK DIODE RECOVERY, OPTIONAL
SNUBBER REDUCES OVERSHOOT AND RINGING ................................................................................... 17
FIGURE 12: TIMING OF THE SHORT TO GND DETECTOR .............................................................................. 17
FIGURE 13: ERROR LOGIC ......................................................................................................................... 18
FIGURE 14: SCHEMATIC OF CURRENT MEASUREMENT AMPLIFIERS ............................................................... 19
FIGURE 15: TIMING OF THE CURRENT MEASUREMENT ................................................................................. 20
FIGURE 16: HALLFX™ BLOCK DIAGRAM AND TIMING ................................................................................... 22
FIGURE 17: HALLFX™ BASED COMMUTATION ............................................................................................ 24
FIGURE 18: POWER SUPPLY BLOCK WITH EXAMPLE VALUES ........................................................................ 26
FIGURE 19: ADDING A REVERSE POLARITY PROTECTION.............................................................................. 29
FIGURE 20: LOW POWER STANDBY ............................................................................................................ 29
FIGURE 21: LOW VOLTAGE OPERATION ...................................................................................................... 30
FIGURE 22: COMMUTATION SEQUENCE ...................................................................................................... 42
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