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TMC603 Three phase motor pre-driver with BLDC back EMF commutation hallFX™ and current sensing

Description
The TMC603 is a three-phase BLDC motor driver IC for highly compact and energy efficient drive solutions.
The control algorithms previously only found in much more complex servo drives can now be provided with a minimum of external components and the TMC603 directly drives 6 external N-channel MOSFETs for motor currents up to 20A and up to 50V. It integrates current measurement without the need for high current sense resistors and the sensor-less commutation circuitry hallFX™. The integrated support for sine commutation as well as for back EMF sensing and commutation, saves costs while still allowing for maximum drive efficiency.
Depending on the required commutation scheme and the bus interface the device forms a complete motor driver system in combination with an external 8-bit processor or with a more powerful 32-bit processor. Protection and diagnostic features as well as a step down switching regulator further reduce system cost and increase reliability.

The TMC603 also supports control of three phase stepper motors as well as two-phase stepper motors using two devices.

Specifications

• Low power dissipation
• High precision two current range sense amplifiers are integrated
• MOSFET current sensing: no shunt needed
• hallFX™ sensor-less back EMF commutation
• Break-before-make logic: No special µC PWM needed
• Over-current, short-2-GND and under-voltage protection and diagnosis
• Integrated step down switching regulator up to 500mA / 300kHz

Electrical data

• Up to 30A motor current
• Supply voltage 9V to 50V 
• EMV optimised current controlled gate drivers up to 150mA
• QGD protection: supports recent power MOSFET generation
• 3.3V or 5V interface

Package

• QFN52 8x8mm2
• RoHS compliant
• Packaging unit: 260pcs. per tray