The STEVAL-PTOOL2V1 BLDC driver reference design is tailored for battery-operated power tools using 8S to 15S battery packs. It is based on the STSPIN32F0252 motor controller with embedded 3-phase, 250 V gate driver and low-power STM32 MCU. The power stage is based on the STL130N8F7 power MOSFETs or any similarly rated device in a PowerFlat 5x6 package.

The board implements single shunt sensing topology with both field-oriented control

(FOC) and sensored or sensorless 6-step control supported for driving permanent magnet synchronous motors (PMSM) and brushless DC (BLDC) motors.

The companion 6-step STSW-PTOOL2V1 firmware is ready to use with position feedback from phase Hall-effect sensors.

This reference design can deliver up to 19 A continuous current with very good thermal dissipation performance thanks to the mounted heatsink. It is compatible with a wide input voltage range from 20 to 72 VDC, and includes an auxiliary power stage with the VIPER013 in buck configuration to generate +12V and +3.3V supply voltage required by the application.

The STEVAL-PTOOL2V1 features a potentiometer for speed variation and protection features include thermal shutdown, undervoltage lockout, and overcurrent protection.

This compact 80 mm x 58 mm design is ideal for power tools and any similar battery-operated applications in terms of architecture, rating and performance.

• Input voltage from 20 VDC to 72 VDC
• Recommended for power tools supplied from 8S to 15S
• Output current up to 19 Arms
• Overcurrent threshold set to 36 A peak
• STSPIN32F0252 featuring
  • 250 V, 1 A, 3-phase gate driver
  • SmartShutDown OCP
  • Cortex-M0 STM32
• STL130N8F7 MOSFETs power stage featuring:
  • VDS = 80 V
  • RDS(on) max.= 3.6 mΩ
  • PowerFlat 5x6 package
• Compact footprint (80 mm x 58 mm)
• Heatsink for best power dissipation performance
• Single shunt current sensing, suitable for:
  • Sensored or sensorless 6 step algorithm
  • Single-shunt vector (FOC) algorithm
• Digital Hall sensors and encoder input
• Plug-and-play thanks to available six-steps firmware with Hall-effect sensors feedback
• Speed regulation through trimmer
• Fully protected:
  • Thermal shutdown
  • Undervoltage lockout
  • Overcurrent protection
• Bus voltage sensing
• 12 V VCC and 3.3 V VDD supplies
• Serial wire debug (SWD) port for debugging/programming
• UART TX RX interface available
• Easy user interface with buttons and trimmer