EVALSP820-XS

EVALSP820-XS Compact evaluation board for STSPIN820 stepper motor driver Data brief  CCTV, security and dome cameras  Robotics  ATM and cash handling machines  Office and home automation  POS Description 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. 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) 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.  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 Applications 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.  3D printers  Medical equipment  Textile and sewing machines January 2018 DocID031419 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 2/4 DocID031419 Rev 1 3  
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/' 7.. 7$$         7.05 (/% # # " " 7%% (/% ". + Schematic EVALSP820-XS Schematic Figure 1. Board schematic    EVALSP820-XS Revision history Revision history Table 1. Document revision history Date Revision 17-Jan-2018 1 Changes Initial release. DocID031419 Rev 1 3/4 4 EVALSP820-XS IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2018 STMicroelectronics – All rights reserved 4/4 DocID031419 Rev 1