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 Features world s smallest 45 V microstepping motor driver rated at 2.5 A. Operating voltage: 7 V to 45 V Continuous current up to 1.5 A per phase It provides a very compact solution to evaluate the performance of the STSPIN820 stepper motor Maximum current up to 2.5 A per phase driver with a minimum set of additional equipment Integrated low R power stages DS(ON) and without the need of additional devices. (HS + LS = 1 typ.) The hardware is fully compatible to be used Microstep resolution easily settable through together with RAMPS or other similar FFF 3D jumpers: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, printing platforms, representing a very fast drop-in 1/128 and 1/256 of step replacement of similar solutions. Contrary to most Simple step and direction control interface other competitors solutions, the EVALSP820-XS helps customers to really exploit the benefits of Adjustable current control through a working at high microstepping resolution. potentiometer to set the ref. voltages Embedded PWM current control with The microstepping resolution can be easily set to selectable decay mode (fast or slow) one of eight available values through M1, M2 and M3 inputs: full-step, 1/2, 1/4, 1/8, 1/16, 1/32, Full set of embedded protections 1/128 and 1/256 of step. Non-dissipative overcurrent It is simply controlled through step and direction Undervoltage lockout ports and embeds the PWM current control Thermal shutdown algorithm with selectable decay mode (fast + slow Short-circuit or slow) and the adjustable reference voltage Compatible with RAMPS and similar open level through an embedded potentiometer. source solutions for FFF 3D printers The STSPIN820 features a full set of protections Very compact footprint: 15 x 20 mm making it a bullet proof device for a wide range of industrial applications. Applications 3D printers Medical equipment Textile and sewing machines January 2018 DocID031419 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.co. 50 06 7%% 06 06 06 Schematic EVALSP820-XS Schematic Figure 1. Board schematic (/% (/% 7.05 + . 5 5 5 5 74 % 74 % &1 % 5 : 5 3 / 3 + 2/4 DocID031419 Rev 1 7 6 / 4541*/ 7 45 : 3&4& 7 065 6-&/ 065 %* %* 45&1 7. 45 , 4&/4 4&/4 . %& 4/4 .0%& &/ 065 3 .0%& 065 7 .0%& 3 4&/4& 3& 4&/4& 4/4 3 3 / 3 3 3 3 / 45 5 (/ (/