Introduction
The STEVAL-ESC001V1 reference design for electronic speed controllers (ESC) for drones fits entry-level commercial drone
designs and drives any three-phase brushless (or PMSM) motor running off 6S LiPo battery packs, or any equivalent DC supply,
up to 30 A peak current.
The STEVAL-ESC001V1 lets you spin a motor and its propeller in minutes thanks to STM32 Motor Control Software
Development Kit (MCSDK) with ST Motor profiler (X-CUBE-MCSDK). It implements a sensorless field oriented controlled (FOC)
algorithm with 3-shunt current reading, speed control and full active braking.
The reference design board can accept commands from a flight control unit through PWM signals; other communication bus
interfaces like UART, CAN, and I²C are also available. The reference embeds a battery eliminator circuit working at 5 V, an NTC
sensor for temperature measurement and circuitry for overcurrent/overvoltage protection (OCP/OVP). The compact form factor
and current capability render this reference design suitable for electronic speed controllers on small and light unmanned aerial
vehicles like professional drones.
The X-CUBE-MCSDK software package lets you refine your electronic speed controller design. They act on the FOC
parameters embedded in the STM32 and experiment with the ST motor profiler to retrieve rapidly the motor parameters. The ST
sensorless FOC algorithm ensures longer flight times and optimal dynamic performance.
The STEVAL-ESC001V1 is designed around the highly efficient, low R
dson
STripFET F7 power MOSFETs, the high-performance
STM32F303CBT7 microcontroller with Arm
®
Cortex
®
-M4 core and the
L6398 drivers.
Figure 1. STEVAL-ESC001V1 evaluation board
Electronic speed controller for BLDC and PMSM three phase brushless motor
UM2197
User manual
UM2197 - Rev 3 - November 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
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