X-NUCLEO-IHM14A1 STMicroelectronics

X-NUCLEO-IHM14A1 Stepper motor driver expansion board based on STSPIN820 for STM32 Nucleo Data brief Description The X-NUCLEO-IHM14A1 motor driver expansion board is based on the STSPIN820 monolithic driver for stepper motors. It represents an affordable, easy-to-use solution for driving stepper motors in your STM32 Nucleo project, implementing motor driving applications such as 2D/3D printers, robotics and security cameras. The STSPIN820 implements a PWM current control with constant OFF time adjustable via an external resistor and a microstepping resolution th up to the 256 step. Features The X-NUCLEO-IHM14A1 expansion board is compatible with the Arduino UNO R3 connector Operating voltage: 7 to 45 V and the ST morpho connector, so it can be Output current up to 1.5 Arms plugged to the STM32 Nucleo development th Fine tuning microstepping up to the 256 board and stacked with additional X-NUCLEO step expansion boards. Current control with adjustable OFF time Full protection set: Overcurrent protection Short-circuit protection Under voltage lock out Thermal shutdown Compatible with Arduino UNO R3 connector Compatible with STM32 Nucleo boards RoHS compliant Applications 3D printers Medical equipment Industrial 2D printers Textile and sewing machines CCTV, security and dome cameras ATM and cash handling machines Office and home automation POS Robotics October 2017 DocID031100 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram X-NUCLEO-IHM14A1 Schematic diagram Figure 1: X-NUCLEO-IHM14A1 circuit schematic OUTB2 OUTB1 OUTA2 OUTA1 + + 2/4 DocID031100 Rev 1 33 F/50 V C1 2 1 C1: SMD VS footprint option 33 F/50 V C2 2 1 C2: Through Hole footprint EN FAULT VDD VDD VDD option C3 330 n/50 V TP2 TP3 TP4 TP5 R2 TP1 OUTA1 OUTA2 OUTB1 OUTB2 R1 1k R3 U1 VREF 5k6 39k R4 NM R5 22k VREF 17 1 1 VREF EN FAULT Q1 2 C4 GND Q2 OUTA1 7 10n OUTA1 REF PWM 1 Vref OUTA2 8 OUTA2 R6 R7 C5 47k 2 16 5 1k STBY SENSEA1 220n D1 D2 D3 D4 21 6 YELLOW YELLOW YELLOW YELLOW MODE1 SENSEA2 22 4 MODE2 SNSA 23 R8 MODE3 12 OUTB1 330 OUTB1 19 STCK STBY 11 OUTB2 R9 R10 R11 R12 OUTB2 20 10k/0.5W 10k/0.5W 10k/0.5W 10k/0.5W DIR MODE1 14 SENSEB1 24 TOFF MODE2 13 SENSEB2 18 DECAY 15 MODE3 SNSB STCK DIR STSPIN820 R13 R14 R15 R16 D5 0.68/0.5W 0.68/0.5W 0.68/0.5W 0.68/0.5W RED R17 TOFF 47k R18 DECAY 47k R19 22k Roff CN1 VDD OUTB1 1 B+ VDD VDD VDD VDD R20 OUTB2 2 B- S1 S2 S3 S4 18k OUTA2 3 A- R21 10k 2 R22 10k 2 R23 10k 2 R24 10k 2 MODE1 1 MODE2 1 MODE3 1 DECAY 1 STBY OUTA1 4 A+ 3 3 3 3 C6 5 Vs VS MODE1 MODE2 MODE3 DECAY 1n 6 GND CN7 CN9 1 2 3 4 1 5 6 VDD CN6 TP6 2 EN FAULT 7 8 EN R25 0 3 9 10 R26 0 TP7 CLK STCK 1 4 11 12 3.3V CN10 R27 NM 2 5 13 14 DEC DECAY 3 38 37 6 GND 15 16 VDD R28 NM 4 36 35 7 17 18 DIR 34 33 TP8 TP9 5 8 19 20 GND 6 32 31 21 22 R29 0 DIR GND CON-1x8 30 29 VS 7 23 24 C7 28 27 8 25 26 220n 26 25 GND VS 27 28 CN5 CON-1x8 24 23 29 30 22 21 STBY STBY 31 32 1 20 19 REF REF PWM 33 34 2 18 17 35 36 3 CN8 16 15 M3 MODE3 37 38 4 14 13 MODE2 M2 5 12 11 1 M1 MODE1 6 2 10 9 GND CON-2x19 7 8 7 3 8 6 5 4 9 5 4 3 10 2 1 6 CON-1x10 CON-1x6 CON-2x19 2 3 1 3 3 9 GND VS 25 10 EPAD VS 1 2 3 2 1 2 1 2 1 2 1 2