STMicroelectronics STSPIN32F0 Series

Extremely integrated STM32-based system-in-package solution for driving three-phase BLDC motors

The growing portfolio of STSPIN32F0 devices embed a 32-bit ARM^® Cortex^®-M0 CPU based STM32F031C6 Microcontroller with extended temperature range and a triple half-bridge gate driver, able to drive external N-channel power MOSFETs or IGBTs.

The STSPIN32F0, STSPIN32F0A and STSPIN32F0B are suited for battery power applications ranging from 6.7 V up to 45 V. The high- and low-side switches of the same half-bridge cannot be simultaneously driven high thanks to an integrated interlocking function.
An internal DC/DC buck converter provides the 3.3 V voltage suitable to supply both the MCU and external components. An internal LDO linear regulator provides the supply voltage for the gate drivers.
The integrated operational amplifiers are available for the signal conditioning, e.g. the current sensing across the shunt resistors. A comparator with a programmable threshold is integrated to perform the overcurrent protection.
The integrated MCU allows performing 6step and FOC (sensored and sensorless) and other advanced driving algorithms. It offers write- and read-protection features for the embedded Flash memory and supports with “A” and “B” versions firmware updates on-the-field through the serial interface thanks to the embedded bootloader. 
The devices also feature overtemperature and undervoltage lockout protections, a standby mode to reduce the power consumption, 5 V tolerant general-purpose I/O ports (GPIO), a multi-channel 12-bit analog-to-digital converter, synchronizable general-purpose timers and an easy to use debugging serial interface (SWD).

The STSPIN32F025x and STSPIN32F060x devices are the latest high voltage extensions of the STSPIN32F0 series. They embed the same STM32F031C6 Microcontroller but a 250 V or 600 V triple half-bridge gate driver, with two variances of gate driving current capabilities: 0.35 A for lower power motors, up to 1A for more powerful motors. The comparator offers an advanced smartSD function, ensuring fast and effective protection against overload and overcurrent.
The high-voltage bootstrap diodes are also integrated, as well as anti cross-conduction, deadtime and UVLO protection on both the lower and upper driving sections, which prevents the power switches from operating in low efficiency or dangerous conditions. Matched delays between low and high-side sections guarantee no cycle distortion.