STMicroelectronics EVSPIN32G4-DUAL demonstration board

The STMicroelectronics EVSPIN32G4-DUAL demonstration board controls two motors from a single STSPIN32G4 integrated driver, thereby accelerating product development and simplifying PCB design.

The board is designed to reduce the time to market for advanced industrial and consumer products such as robots, multi-axis factory automation systems, garden equipment and power tools. The STSPIN32G4 motor controller contains an Arm Cortex-M4 microcontroller (MCU) with the processing power to manage both motors simultaneously, executing complex algorithms like field-oriented control (FOC) in real time. In addition, MCU peripherals support sensored or sensorless FOC and advanced position and torque-control algorithms, including motor-control and general-purpose timers, analog functions including operational amplifiers and comparators.

The demonstration board also features a three-phase gate driver integrated in the STSPIN32G4 and an additional STDRIVE101 gate driver to control two three-phase inverters delivering up to 10 A with a maximum supply voltage of 74 V. Both gate drivers have their own bootstrap circuitry and safety features including drain-source voltage monitoring, cross-conduction prevention, several thermal protection mechanisms and undervoltage lockout (UVLO).

The demonstration board also leverages the STSPIN32G4’s built-in power-management circuitry, permitting a compact design with a low BOM that permits rapid assembly in production. The power management includes a programmable buck converter for gate drivers, VCC supply, a low-dropout linear regulator and a special regulator with low quiescent current to supply the MCU during standby.

The STSPIN32G4 is included in the STM32 ecosystem that provides extensive support for application development, including tools for starting the project, middleware packs and software examples. The X-CUBE-MCSDK (motor control software development kit) has firmware libraries for algorithms including FOC and STM32 motor-control workbench.