Reference design for handheld power tools

Reference design for handheld power tools

Technology News |
By Nick Flaherty

Würth Elektronik and STMicroelectronics jointly developed a demo using a battery-powered Würth power tool.

The design efficiently drives a low-voltage Brushless DC motor for handheld power tools and includes all the necessary user interfaces required to control the motor’s trigger, speed, and direction.

The STDES-PTOOL3A reference design includes all the Gerber files, Bill of Materials, schematics and all other reference materials and showcases the capabilities of ST’s STM32G4 MCU and STDRIVE101 gate driver in powering six STL220N6F7 MOSFETs that all comply with Würth Elektronik’s Ferrite Bead (WE-CBF SMT EMI Suppression Ferrite Bead 74279271) and Power Inductor (WE-LHMI SMT Power Inductor 74437368330).

The software embedded in the STM32G4 was developed using the STM32 Motor Control software development kit (X-CUBE-MCSDK). The design shows real-world usage scenarios in battery-operated handheld power tools. Combining active components from ST with passive components from Würth Elektronik provides a ready-made turnkey or customizable design.  

”Working with Würth Elektronik, ST has shown its capability to work with partners to extract the best performance from its product offer and to jointly develop system solutions addressing the most challenging and complex application needs,” said Ricardo De Sa Earp, Executive Vice President, General-Purpose Microcontroller Sub-Group, STMicroelectronics.

“The development of a cost-effective, high-quality reference design that forms the basis for outstanding power tools is another example of the fruitful collaboration we share with STMicroelectronics,” said Alexander Gerfer, CTO, Würth Elektronik eiSos Group.

The demo will be exhibited at other upcoming tradeshows, including the Smart Product Solutions (SPS) in Nuremberg and the SIDO in Lyon and Paris.;


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