Picture is not contractual.

Features

•

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

•

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

Product status link

B-G431B-ESC1

Electronic speed controller Discovery kit for drones with STM32G431CB

B-G431B-ESC1

Data brief

DB3787 - Rev 1 - April 2019

For further information contact your local STMicroelectronics sales office.

www.st.com