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  • 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 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.

    Key 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
    • 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

Sample & Buy

Part Number
Marketing Status
Budgetary Price (US$)*
Quantity
Specific features
ECCN (US)
Country of Origin
WEEE Compliant
Order from Distributors
Order from ST
B-G431B-ESC1
Active
18.0 1 - 3A991A2 - true Check Availability

Distributor availability ofB-G431B-ESC1

Distributor Name
Region Stock Min. Order Third party link
FUTURE WORLDWIDE 39 1 Order Now
ARROW EUROPE 19 0 Order Now
MOUSER WORLDWIDE 169 1 Order Now
Farnell Element14 EUROPE 40 1 Order Now
RUTRONIK EUROPE 25 1 Order Now

Distributor reported inventory date: 2019-10-22

Distributor Name

FUTURE

Stock

39

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

19

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

169

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

40

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

25

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-22

Buy now

B-G431B-ESC1

Marketing Status

Active

Unit Price (US$)

18

Unit Price (US$)

18.0*

Distributor availability ofB-G431B-ESC1

Distributor Name
Region Stock Min. Order Third party link
FUTURE WORLDWIDE 39 1 Order Now
ARROW EUROPE 19 0 Order Now
MOUSER WORLDWIDE 169 1 Order Now
Farnell Element14 EUROPE 40 1 Order Now
RUTRONIK EUROPE 25 1 Order Now

Distributor reported inventory date: 2019-10-22

Distributor Name

FUTURE

Stock

39

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

19

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

169

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

40

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

25

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-22

Quantity

1

Specific features

-

ECCN (US)

3A991A2

Country of Origin

-

WEEE Compliant

true

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Legal

    • Description Version Size Action
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Part Number Marketing Status RoHS Compliance Grade Material Declaration**
B-G431B-ESC1
Active
Ecopack1

B-G431B-ESC1

Package:

Ecopack1

Material Declaration**:

Marketing Status

Active

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.