Issue link: https://resources.mouser.com/i/1442757
Case Study 13 Solution for Power Tools The demanding requirements and competitiveness of today's power tool market mean manufacturers must design products faster and at lower cost. This puts design engineers under pressure to speed up development efforts while looking for ways to reduce system cost—all without compromising performance and innovation. The main blocks of a typical high- performance power drill include a BLDC motor, gearbox, power stage, gate driver, and microcontroller. Traditional designs use discrete components in these blocks, which increases the cost and complexity of the nal product. So a primary challenge designers face in power tool design is limiting the component count. Other challenges engineers must contend with is the complexity of designing the motor feedback interface to the drive system, and the development time required to develop the motor control software STSPIN220, 230, 240, 250 Motor Drivers Low-voltage monolithic motor drivers for battery-operated systems mouser.com/stmicroelectronics-stspin-drivers/ By Cheng Peng, STMicroelectronics • Tailored for portable: ideal for battery-operated motors • Extremely low operating voltage 1.8 – 10V, ideal for battery-operated motors • Ultra-miniaturized 3 x 3mm QFN package • Powering small, but also medium-size motors • Extended battery life • Reliable: Full set of protection function with UVLO, over- current and thermal protection algorithms for their applications. These obstacles are overcome with ST's STSPIN32F0 advanced BLDC controller with embedded microcontroller unit (MCU). The 3-phase gate driver, 12-bit ADC, and 12V linear regulator are all integrated in the STSPIN32F0 to reduce the need for external components, lowering total system cost. The device also features an innovative on-chip peripheral to generate PWM and easily interface various motor feedback systems— including Hall sensor and current sensing—to the motor drive, further simplifying the design process. And to shorten the development cycle, the STSPIN32F0 features a built-in STM32 Arm Cortex M0 microcontroller which includes free, advanced motor control driving algorithms. FOC along with a 6-step motor control software library and GUI tools signicantly reduce tuning time and effort.