STMicroelectronics B-G431B-ESC1 User Manual

March 2021 UM2516 Rev 4 1/29
1
UM2516
User manual
Electronic speed controller Discovery kit for drones
with STM32G431CB
Introduction
The B-G431B-ESC1 Discovery kit is mainly based on the STM32G431CB microcontroller,
the L6387 driver, and STL180N6F7 power MOSFETs. Its breakable form includes an
electronic speed controller (ESC) board and a daughterboard for user interface with
embedded ST-LINK/V2-1. The ESC has a very compacted size with the goal to drive a
single 3-phase brushless motor (BLDC/PMSM), performing a sensorless field-oriented
control (FOC) or 6-step control with speed regulation and active braking function. This unit
can be connected with an external battery (LiPo type) and accepts a command signal from
an external unit, for instance, a flight control board or similar. The system provides different
communication buses (UART, CAN, PWM) for driving and monitoring, and also embeds an
overcurrent and thermal protection circuit. The daughterboard contains an ST-LINK in-circuit
debugger and programmer, allowing the user to program and debug the STM32G431CB
microcontroller directly with a USB cable using a compatible toolset. Its form factor is
suitable for small and very light R/C vehicles and their motor current capability, and also fits
big vehicle requirements, for instance, a prosumer drone.
.
Pictures are not contractual.
Figure 1. B-G431B-ESC1 Discovery kit
(front view)
Figure 2. B-G431B-ESC1 Discovery kit
(bottom view)
www.st.com

STMicroelectronics B-G431B-ESC1 Specifications

General

Brand	STMicroelectronics
Model	B-G431B-ESC1
Category	Controller
Language	English

Summary

Introduction to the ESC Discovery Kit

Key Features of the ESC Discovery Kit

Ordering Information

Product Codification Explanation

Explains the Discovery kit's codification based on product order codes.

Development Environment Setup

System Requirements for Development

Lists required operating systems and cable types for development.

Recommended Development Toolchains

Specifies required IDEs and software tools for development.

Supported Software Tool

Details the X-CUBE-MCSDK package for motor-control applications.

Product Description

Hardware Layout and Configuration

Block Diagram of ST Products

Overview of the kit's hardware components and their interconnections.

Board Dimensions

Provides the physical size specifications of the Discovery kit PCB.

Communication and Command Interfaces

Details USB, CAN, UART, and motor sensor interface connections.

Motor Sensor Connection

Explains how to connect Hall or encoder sensors for motor feedback.

CAN Connection and Configuration

Describes the CAN bus interface, its standard, and termination setup.

STM32G431CB Pinout for Motor Control

Lists pin assignments of the STM32G431CB microcontroller for motor control.

Connection and First Execution

First Case: Daughterboard Not Removed

Guide for connecting and programming with the daughterboard attached.

Second Case: Daughterboard Removed

Instructions for connecting and programming when the daughterboard is detached.

Discovery Kit Information

Product Marking Details

Information on product labels, order codes, and serial numbers for identification.

Product History

Details product identifications and associated motherboard/silicon revisions.

Board Revision History

Outlines board revision history and any noted limitations.

Compliance Statements

FCC Compliance Statement

FCC rules compliance, including operational conditions and interference guidelines.

ISED Canada Compliance Statement

ISED Canada compliance, covering RF exposure and license-exempt RSS standards.