STSPIN820马达驱动器设计方案

ST公司的STSPIN820是集成了控制逻辑和低RDSon功率级的步进马达驱动器,控制器采用有固定OFF时间的PWM电流控制,微步距分辨率高达1/256步.工作电压7-45V,最大输出电流1.5Arms,RDSon HS+LS=1Ω(典型),主要用在3D打印机,医疗设备,办公和家庭自动化,POS,机器人,ATM和现钞处理设备,CCTV,纺织机械,安全照相机和工业2D打印机等.本文介绍了STSPIN820主要特性,框图,应用电路,以及马达驱动扩展板X-NUCLEO-IHM14A1主要特性,电路图和材料清单.

The STSPIN820 is a stepper motor driver whichintegrates, in a small QFN 4 x 4 mm package,both control logic and a low RDSon power stage.

The integrated controller implements a PWMcurrent control with fixed OFF time and a microstepping resolution up to 1/256th of the step.

The device can be forced into a low consumptionstate.The device offers a complete set of protectionfeatures including overcurrent, overtemperatureand short-circuit protection.

STSPIN820主要特性:

 Operating voltage from 7 to 45 V
 Maximum output current 1.5 Arms
RDSon HS + LS = 1 Ω typ.
 Microstepping up to 1/256th of step
 Current control with programmable OFF time
 Current sensing based on external shuntresistor
 Full protection set
 Non-dissipative overcurrent protection
Short-circuit protection
 Undervoltage lockout
 Thermal shutdown
Standby low consumption

STSPIN820应用:

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

图1.STSPIN820框图

图2.STSPIN820典型应用电路

马达驱动扩展板X-NUCLEO-IHM14A1

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 up to the 256th step.
The X-NUCLEO-IHM14A1 expansion board is compatible with the Arduino UNO R3 connector and the ST morpho connector, so it can be plugged to the STM32 Nucleo development board and stacked with additional X-NUCLEO expansion boards.

马达驱动扩展板X-NUCLEO-IHM14A1主要特性:

Operating voltage: 7 to 45 V
Output current up to 1.5 Arms
Fine tuning microstepping up to the 256th step
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

图3.马达驱动扩展板X-NUCLEO-IHM14A1外形图
The X-NUCLEO-IHM14A1 expansion board for STM32 Nucleo is a stepper motor driver covering a wide range of applications.

图4.马达驱动扩展板X-NUCLEO-IHM14A1电路图
马达驱动扩展板X-NUCLEO-IHM14A1材料清单: