BLDC drivers for high-voltage applications

By eeNews Europe

The 250V STSPIN32F0251 and STSPIN32F0252, and 600V STSPIN32F0601 and STSPIN32F0602 integrate three-phase gate drivers and an STM32F0 Arm Cortex-M0 MCU. Control algorithms and application examples provided include single-shunt and three-shunt field-oriented control (FOC), and traditional sensored single-shunt and 6-step sensorless control.

The four devices are pin-compatible and have a standby mode to minimize power consumption in idle conditions.

The ICs have bootstrap diodes and protection circuitry including cross-conduction prevention and deadtime insertion. UVLO on the lower and upper driving sections stop the power switches from operating in low-efficiency or dangerous conditions. A patented fast-acting smart ShutDown (smartSD) function provides overload and overcurrent protection.

The integrated 48MHz STM32F0 MCU gives access to the STM32 development ecosystem for application building. 4KByte SRAM and 32KByte Flash are provided for data and code storage, and analog and digital peripherals include a 12-bit ADC with up to 10 channels, six general-purpose timers, 21 GPIO pins, and I2C, UART, and SPI ports. An integrated bootloader permits flexible device-lifecycle management by allowing firmware updates to be applied in the field.

Four inverter evaluation boards are compatible with X-CUBE-MCSDK, starting from 5.4.1 version.

More information

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