ST EVLSERVO1 User Manual

UM3375
User manual
Getting started with the EVLSERVO1
Introduction
The EVLSERVO1 is a reference design for driving low-voltage and high-current servo motors.
It is based on the STSPIN32G4, a system-in-package integrating in a 9x9 mm VFQFPN package, a triple high-performance
half-bridge gate driver with a rich set of programmable features, and a mixed signal STM32G431 microcontroller.
The EVLSERVO1 has a very compact form factor of 50 mm x 80 mm x 60 mm and consists of two boards stacked up together.
The system is designed to drive 3-phase brushless motors delivering up to 2 kW of power out of the box with provided heatsink
or 3 kW if adding an external fan for cooling. The system is intended for applications with nominal bus voltage up to 48 V but is
designed to manage overvoltage conditions up to 75 V.
A dedicated circuitry is available to control bus voltage in case of regenerative motor braking. Power from the motor can be
dissipated in one external resistor, clamping the bus voltage at the required safe level.
Monitoring is available for the power stage in case of overheating, overvoltage, and overcurrent. Triple-shunt topology is used
for the sensing of motor winding currents in differential mode.
The board is ready for FOC and 6-step control algorithms and can run in sensorless mode or use up to two position feedbacks
simultaneously. Hall sensors, incremental encoder, and absolute encoder with UART or SPI communication are supported with
differential or single-ended wiring.
A CAN transceiver is also provided for robust communication in industrial environments.
Figure 1. EVLSERVO1
UM3375 - Rev 1 - November 2024
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For further information contact your local STMicroelectronics sales office.