STEVAL-PTOOL2V1

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

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Product overview

Description

Description

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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The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.Compliancy with WEEE Directive (2012/19/EU)The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMain country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.