X-NUCLEO-IHM02A1 STMicroelectronics

X-NUCLEO-IHM02A1 Two axis stepper motor driver expansion board based on the L6470 for STM32 Nucleo Data brief Five LEDs: 2 green, to indicate that each L6470 is powered 1 orange, to indicate that the digital voltage is on 1 yellow, to indicate when any L6470 is busy 1 red, to indicate when a fault condition occurs (step loss, OCD, thermal pre- warning or shutdown, UVLO, incorrect command, non-performable command) for any L6470 RoHS compliant Description Features The X-NUCLEO-IHM02A1 is a two axis stepper Operating voltage: 8 V - 45 V DC motor driver expansion board based on the L6470. It provides an affordable and easy-to-use 7 A peak ouotput current (3 A rms) for each solution for low voltage motor control driving for motor driver stepper motors in your STM32 Nucleo project. Digital voltage supply is selectable (3.3 V or 5.0 V) by a 0 resistor and is provided on The expansion board includes two L6470s, a main board fully-integrated micro stepping motor driver used 3.3 V digital voltage supply may be provided to control stepper motors by means of high-end by: motion control commands received through SPI. the STM32 Nucleo board It is capable of driving one or two stepper motors the step-down monolithic power when plugged into an STM32 Nucleo board. switching regulator soldered on the This board is equipped with Arduino UNO R3 expansion board (through jumper connectors and the layout is also compatible with selection, it can also be used to supply ST morpho connectors. One or more of these the STM32 Nucleo board expansion boards can be plugged into an STM32 USART communication Nucleo board to control one or more stepper enables receiving of commands from a motors. PC enables sending information to a PC Each SPI peripheral of each L6470 is connected Requires no dedicated cable uses the in a daisy chain configuration. Type A to Type Mini-B USB cable already used to supply the STM32 Nucleo board SPI interface (may be connected in a daisy chain configuration) Equipped with Arduino UNO R3 connectors Layout compatible with ST morpho connectors December 2015 DocID028469 Rev 2 1/7 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram X-NUCLEO-IHM02A1 Schematic diagram Figure 1: X-NUCLEO-IHM02A1 circuit schematic (1 of 4) 3 L6470 0 nSTBY nRST (configuration for VS = 12 V) GSPG0810150925SG 2/7 DocID028469 Rev 2 R6 VS Pl ace cl osed L6470 0 VDD t he t wo si des of t he L6470PD 560 D4 C19 C20 C21 C22 + C23 C17 C18 GREEN LED 100uF 100nF 10uF 100nF 100nF 100nF 100nF 63V 6.3V 6.3V 50V 50V 50V 50V U2 L6470 0 GND L6470 0 2A 1 36 PGND 1 OUT2A 36 R7 L6470 0 1A 2 35 OUT1A 2 OUT2A 35 L6470 0 VS 3 34 39k OUT1A 3 VSA 34 L6470 0 VS 4 33 VSA 4 VSA 33 5 32 L6470 0 STCK VSA 5 STCK 6 31 L6470 0 nFLAG nSTBY nRST nFLAG 7 30 L6470 0 nCS SW nCS 8 29 L6470 0 nBUSY SYNC ADCIN nBUSY SYNC C24 SB1 9 28 L6470 0 GND VREG DGND 10 27 1nF L6470 0 SDI OSCIN SDI L6470 0 OSCOUT 6.3V 11 26 L6470 0 SCK OSCOUT CK L6470 0 GND 12 25 L6470 0 SDO Y2 AGND SDO SB2 13 24 CP VDD 14 23 L6470 0 VS VBOOT VSB 23 VS L6470 0 VS 15 22 VSB 15 VSB 22 L6470 0 2B 16 21 16MHz VSB 16 OUT2B 21 L6470 0 1B 17 20 N.M. OUT1B 17 OUT2B 20 L6470 0 GND 18 19 OUT1B 18 PGND 19 R8 C25 C26 37 L6470 0 GND ExpPad C27 + C28 62k 18pF 18pF 100nF 47uF N.M. N.M. N.M. L6470PD Driver 0 6.3V 6.3V VS C30 R9 C29 D5 9.76k 3.3nF BZX84J-C3V6 N.M. 6.3V N.M. 220nF N.M. 16V ST2 D6 R10 BAV99 1 L6470 0 2B L6470 0 SW 2 1 L6470 0 1B 2 Stepper 100 L6470 0 1A 3 C31 Motor 2 L6470 0 2A 4 10nF L6470 0 OSCOUT 6.3V C32 4 terminals 10nF 50V J3 1 L6470 0 STCK CON1