STEVAL-PTOOL1V1

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Compact reference design for low voltage brushless power tools based on STSPIN32F0B

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Product overview

Description

Description

This STEVAL-PTOOL1V1 compact 70 mm x 30 mm reference design board is tailored for low voltage power tools driven by 3-phase brushless motors, supplied by 2S to 6S batteries. The design is based on the STSPIN32F0B controller and STL180N6F7 (or STL220N6F7) power MOSFET.

The board is ready, and can be configured for 6-step sensorless with few hardware modifications.

The board can deliver up to 15 A continuous current, thanks also to the optimal thermal dissipation provided by an embedded heatsink. It embeds a fast power-on circuit that connects and disconnects the battery, allowing standby consumption below 1 μA for extended battery duration. Several protection features are included, such as thermal shutdown, undervoltage lockout, overcurrent protection with programmable threshold and reverse biasing of power stage outputs.

The firmware examples included in X-CUBE-MCPKG001 are based on STM32 Motor Control SDK (X-CUBE-MCSDK) enabling all the features of the board, included the low quiescent standby mode.

This reference design is predominately intended for power tools, but is very suitable for any battery-powered application involving similar architecture, rating and performance. A potentiometer input for speed variation is available.

  • All features

    • 7 - 45 V motor voltage rating supported
    • Recommended for power tools supplied from 2S to 6S batteries
    • Output current up to 15 Arms
    • STSPIN32F0B advanced 3-phase motor controller tailored for single-shunt applications
    • STL180N6F7 60 V, 1.9 mΩ N-channel power MOSFET
    • Ultra-low standby current below 1µA thanks to an external turn-on/off trigger
    • Heat sink for improved power dissipation
    • Extremely compact footprint (70 mm x 30 mm)
    • Input connector for Hall effect sensors and encoder
    • Plug-and-play capability through 6-step firmware with Hall effect sensor feedback
    • Speed regulation through an external trimmer
    • Protections: thermal shutdown, UVLO, overcurrent and reverse biasing of power stage outputs
    • SWD debug interface and direct firmware update (DFU) via UART

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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.