Design Win

Compact reference design for battery-operated brushless power tools based on STSPIN32F0252

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Product overview


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.

  • All features

    • 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

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
CARD Industrial Ecopack2 Yes




Material Declaration**:

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RoHS Compliance Grade


(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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STSPIN32F0252, STL130N8F7,STN3P10F6; VIPer013; TSV912, STTH102A

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors