STMicroelectronics’ BLDC Motor Driver ICs For High-Power Applications

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  • The newest addition is convenient for designing household and industrial equipment
  • Features robust power protection and availability of control algorithms

STMicroelectronics has introduced four new devices in the STSPIN32F0 motor-control system-in-package family: STSPIN32F0251, STSPIN32F0252, STSPIN32F0601 and STSPIN32F0602. The devices aim to provide ease of design for home appliances and industrial equipment including corded power tools, drives, pumps, fans and compressors.

The 48MHz STM32F0 MCU enables users to make use of the vibrant STM32 development ecosystem to build their applications. 4KByte SRAM and 32KByte Flash provide data and code storage, while analogue and digital peripherals include a 12-bit ADC with up to 10 channels, six general-purpose timers, 21 general-purpose I/O (GPIO) pins and I2C, UART, and SPI ports. An integrated bootloader permits flexible device-lifecycle management by implementing firmware updates to the field.

The 250V STSPIN32F0251 and STSPIN32F0252 and 600V STSPIN32F0601 and STSPIN32F0602 combine three-phase gate drivers and an STM32F0 Arm Cortex-M0 microcontroller for simplifying high-voltage Brushless DC (BLDC) motor drives.

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The four devices allow products to be used for 110V AC and 250V AC operation. The ICs feature a standby mode to help minimise power consumption in idle conditions.

Power management

All gate driver devices have integrated bootstrap diodes and protection circuitry including cross-conduction prevention and deadtime insertion. Additionally, under-voltage lockout (UVLO) on both the lower and upper driving sections prevents the power switches from operating in low-efficiency or dangerous conditions. A fast, smart ShutDown (smartSD) function also offers overload and overcurrent protection.

Availability

The STSPIN32F0251, STSPIN32F0252, STSPIN32F0601 and STSPIN32F0602 are now available and packaged as 10mm x 10mm TQFP devices.

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Control algorithms and application examples for single-shunt and three-shunt field-oriented control (FOC), as well as single-shunt and 6-step sensorless control, have also been provided.

Four evaluation boards that have fully compatible X-CUBE-MCSDK (motor control software development kit) are available as well. These tools simplify the development of drives by leveraging single-shunt and three-shunt control. The 600V EVSPIN32F0601S1, EVSPIN32F0601S3, EVSPIN32F0602S1 and 250V EVSPIN32F0251S1 contain power-supply and MOSFET output stage with dual-footprint flexibility that allows replacing the devices with alternative MOSFETs or IGBTs in DPAK or PowerFlat packages.

A detachable STLINK‑debugger allows configuration and firmware debugging using standard STM32 tools. Single-wire debug (SWD) and UART connectors are also available.


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