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Home > Technology List > The Latest product_EVALSP820-XS-STMicroelectronic

The Latest product_EVALSP820-XS-STMicroelectronic

Published time: 2019-12-20 11:32:37

1.The latest STMicroelectronics’product


Source :STMicroelectronics

PRESS Title:High-Speed, High-Resolution Motor-Driver Board from STMicroelectronics Maximizes Open-Source 3D-Printer Performance

PRESS Details

— May 30, 2018 —

STMicroelectronics’ EVALSP820-XS motor-driver board brings ST’s industrial-control expertise to the RAMPS (RepRap Arduino Mega Pololu Shield) open-source 3D-printer platform, enabling 3D printer makers to unleash the full potential of their machines for faster printing and smoother surface finish.

The RAMPS modular platform is making Fused Filament Fabrication (FFF) 3D printing accessible to makers, small businesses, and home users, for fast prototyping, making replacement parts, or education. The Arduino Mega 2560, or Arduino DUE, baseboard provides basic control, ready for users to plug-in their own choice of motor driver, extruder controller, and any other desired functions using Mega-compatible expansion shields.

As a plug-and-play expansion board, ST’s EVALSP820-XS can drive RAMPS printers at an unprecedented speed for greatly increased throughput ensuring superior smoothness with microstepping resolution from ½-step to 1/256-step per microstep.

Key to this giant leap in 3D-printing performance is ST’s STSPIN820 stepper-driver IC. The STSPIN820 embeds high-speed motor-control input circuitry and algorithms developed for industrial applications. It also integrates a powerful 1.5Arms output stage in the ultra-compact 4mm x 4mm QFN package. Industrial ruggedness is assured with comprehensive built-in protection including under-voltage lockout, over-current/short-circuit protection, and thermal shutdown.The board can be used in other projects too, to accelerate development of smooth,high-speed stepper control for equipment such as surveillance-camera platforms, textile-manufacturing or sewing machines, medical devices, cash-handling machines, office and home automation, point-of-sale terminals, and robotics. With its 7V-45V operating-voltage range and simple host interface comprising step-clock and direction-input pins, the STSPIN820 is versatile, economical, and easy to integrate.

The EVALSP820-XS expansion board is available now, priced $6.90, from distributors or directly from


2.More Details about the EVALSP820-XS

The EVALSP820-XS is a compact and easy to use evaluation board for the STSPIN820, the world's smallest 45 V microstepping motor driver rated at 2.5 A.It provides a very compact solution to evaluate the performance of the STSPIN820 stepper motor driver with a minimum set of additional equipment and without the need of additional devices.

The hardware is fully compatible to be used together with RAMPS or other similar FFF 3D printing platforms, representing a very fast drop-in replacement of similar solutions. Contrary to most other competitors solutions, the EVALSP820-XS helps customers to really exploit the benefits of working at high microstepping resolution.

The microstepping resolution can be easily set to one of eight available values through M1, M2 and M3 inputs: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, 1/128 and 1/256 of step.

It is simply controlled through step and direction ports and embeds the PWM current control algorithm with selectable decay mode (fast + slow or slow) and the adjustable reference voltage level through an embedded potentiometer.

The STSPIN820 features a full set of protections making it a bullet proof device for a wide range of industrial applications.

3.The EVALSP820-XS Features

Operating voltage: 7 V to 45 V

Continuous current up to 1.5 A per phase

Maximum current up to 2.5 A per phase

Integrated low RDS(ON) power stages (HS + LS = 1 Ω typ.)

Microstep resolution easily settable through jumpers: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, 1/128 and 1/256 of step

Simple step and direction control interface

Adjustable current control through a potentiometer to set the ref. voltages

Embedded PWM current control with selectable decay mode (fast or slow)

Full set of embedded protections

Non-dissipative overcurrent

Undervoltage lockout

Thermal shutdown    Short-circuit

Compatible with RAMPS and similar open source solutions for FFF 3D printers    

Very compact footprint: 15 x 20 mm

  •  3D printers
  •  Medical equipment
  •  Textile and sewing machines CCTV, security and dome cameras
  •  Robotics
  • ATM and cash handling machines
  • Office and home automation
  • POS

More information about The EVALSP820-XS 

4.Related market 

You can find many distributor to sale ,and you can also buy it by STMicroelectronic directly.if you want to find electronic components,jotrin electronics maybe is your choice.



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