B-G431B-ESC1

B-G431B-ESC1 Data brief Electronic speed controller Discovery kit for drones with STM32G431CB Features • • • • • • • • • • Picture is not contractual. Product status link B-G431B-ESC1 • • • • • • • • • • Full reference design for electronic speed controller capable of both sensorless FOC and 6-step algorithm Designed for drones with up to 6S LiPo battery pack or equivalent suitable DC supply 3-phase driver board for BLDC/PMSM motors with discrete N-channel 60 V, 120 A STripFET F7 power MOSFETs STM32G431CB Arm® Cortex®-M4 32-bit MCU, 213 DMIPS, 128 Kbytes of Flash memory, 32 Kbytes of SRAM, analog rich, math accelerator On-board ST-LINK/V2-1 debugger/programmer detachable from the main board Output peak motor current (maximum peak current tested with propeller to have an air-forced cooling): 40 A Designed with SMD ceramic capacitors with very low profile BEC available through the daughterboard (5 V for external board supply, for example a flight control board) Support for motor sensors (Hall or encoder) Supported by ST Motor Control Software Development Kit (SDK) with ST Motor profiler 3-shunt mode supported for motor current sensing L6387 High voltage high and low-side driver with integrated interlocking function Overcurrent and overvoltage protection feature (OCP/OVP) Thermal measuring and overheating protection with NTC on board ESC ready for communication with any standard flight control unit (FCU): PWM/CAN/UART Potentiometer and user button available on daughterboard Two user LEDs: one green LED for 3.3 V level, and one red LED configurable by the user Target applications: motor driving for R/C vehicles, UAV drone, electric car or boat PCB type and size: – FR-4 PCB material – 8-layer layout – Dimensions (including the daughterboard with ST-LINK part): 30 mm × 41 mm – Weight (including the daughterboard with ST-LINK part): 9.2 g RoHS compliant Description The B-G431B-ESC1 Discovery kit is based on the STM32G431CB microcontroller, the L6387 driver and STL180N6F7 power MOSFETs. It is composed of a main power board, and a daughterboard with embedded ST-LINK/V2-1. It is an electronic speed controller (ESC), designed to drive a single 3-phase brushless motor (BLDC/PMSM), performing both sensorless FOC algorithm and 6-step control with a speed regulation, and an active braking function algorithm. The ST sensorless FOC algorithm ensures longer flight times and an optimal dynamic performance. This unit accepts command signal from an external unit for driving and monitoring, for instance DB3787 - Rev 1 - April 2019 For further information contact your local STMicroelectronics sales office. www.st.com B-G431B-ESC1 a flight control board or equivalent. For this purpose, several communication bus interfaces (UART, CAN, PWM channel) are present. A potentiometer and a user button are available for user application. The daughterboard includes a 5 V battery eliminator circuit (BEC), and the main board embeds an overcurrent/overvoltage and thermal protection circuit. The form factor makes it suitable for small and very light R/C vehicles (FPV race drone) and the motor current capability fits the power requirement of big vehicles, for instance a prosumer drone. DB3787 - Rev 1 page 2/6 B-G431B-ESC1 Ordering information 1 Ordering information To order the B-G431B-ESC1 Discovery kit, refer to Table 1. For a detailed description of the board, refer to its user manual on the product web page. Additional information is available from the datasheet and reference manual of the target STM32. Table 1. List of available products 1.1 Order code Board reference User manual Target STM32 B-G431B-ESC1 MB1419 UM2516 STM32G431CBU6 Product marking Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be used as reference design or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering sample tools as reference design or in production. “E” or “ES” marking examples of location: • On the targeted STM32 that is soldered on the board (for illustration of STM32 marking, refer to the STM32 datasheet “Package information” paragraph at the www.st.com website). • Next to the evaluation tool ordering part number that is stuck or silk-screen printed on the board. 1.2 Codification The meaning of the codification of the Discovery kit is explained in Table 2. Table 2. Codification explanation B-XXYYZ-ESCN Description Example: B-G431B-ESC1 XX MCU series in STM32 32-bit Arm Cortex MCUs STM32G4 Series YY MCU product line in the series STM32G431 Z ESCN STM32 Flash memory size: • B for 128 Kbytes Electronic speed controller version number 128 Kbytes ESC1 The order code is mentioned on a sticker placed on the top side of the board. DB3787 - Rev 1 page 3/6 B-G431B-ESC1 Development environment 2 Development environment The B-G431B-ESC1 runs with the STM32G431CB 32-bit microcontroller based on the Arm® Cortex®-M4 core. Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere. 2.1 System requirements • • Windows® OS (7, 8 and 10), Linux® 64-bit, or macOS® USB Type-A to Micro-B cable Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries. 2.2 Development toolchains Note: DB3787 - Rev 1 • Keil® MDK-ARM (see note) • • IAR™ EWARM (see note) GCC-based IDEs On Windows® only. page 4/6 B-G431B-ESC1 Revision history Table 3. Document revision history DB3787 - Rev 1 Date Version 5-Apr-2019 1 Changes Initial release. page 5/6 B-G431B-ESC1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DB3787 - Rev 1 page 6/6