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PCB Type and Dimensions

1. FR-4 PCB material with 8-layer layout
2. Weight (including daughter board with ST-LINK): 9.2g
3. Dimensions (including daughter board with ST-LINK): 30mm × 41mm

The STMicroelectronics B-G431B-ESC1 exploration kit is based on the STM32G431CB microcontroller, L6387 driver, and STL180N6F7 power MOSFET. The kit consists of a main power board and a sub-board, and features an embedded ST-LINK/V2-1. This is an electronic speed controller (ESC) designed to drive a single three-phase brushless motor (BLDC/PMSM). The kit supports speed regulation and active braking function algorithms, and can execute sensorless FOC algorithms and 6-step control. The ST sensorless FOC algorithm ensures longer flight time and optimized dynamic performance. This device accepts command signals from external devices for driving and monitoring the flight control board or similar boards. Therefore, this device has multiple communication bus interfaces (UART, CAN, PWM channels). Potentiometers and user buttons for user applications can be provided. The sub-board includes a 5V battery voltage regulation circuit (BEC), and the main board has overcurrent/overvoltage and thermal protection circuits. The size of this device makes it suitable for small and lightweight R/C vehicles (FPV drones), with motor current capacity capable of meeting the power consumption requirements of large vehicles such as professional drones.