DRV8885RHRT

DRV8885是一款面向工业设备应用的步进电机应用。此器件具有两个N沟道功率金属氧化物半导体场效应晶体管(MOSFET) H桥驱动器、一个微步进分度器以及集成电流检测功能。DRV8885能够驱动高达1.5A的满量程输出电流或1.0A rms输出电流（采用适当的印刷电路板(PCB)接地层进行散热，电压为24V，TA=25°C ）。 DRV8885集成了电流检测功能，消除了对两个外部检测电阻的需求。 STEP/DIR引脚提供简单的控制接口。器件可配置为多种步进模式，从全步进模式到1/16步进模式。凭借专用的nSLEEP引脚，该器件可提供一种低功耗的休眠模式，从而实现超低静态电流待机。 该器件内置以下保护功能：欠压、电荷泵故障、过流、短路以及过热保护。故障状态通过nFAULT引脚指示。 The DRV8885 is an integrated motor driver solution for bipolar stepper motors. The device integrates two NMOS H - bridges, integrated current sense and regulation circuitry, and a microstepping indexer. The DRV8885 can be powered with a supply voltage between 8 and 37V, and is capable of providing an output current up 2.3 - A peak, 1.5 - A full - scale, or 1.0 - A rms. Actual full - scale and rms current will depend on ambient temperature, supply voltage, and PCB ground plane size. The DRV8885 integrates current sense functionality, which eliminates the need for high - power external sense resistors. This integration does not dissipate the external sense resistor power, because the current sense functionality is not implemented using a resistor - based architecture. This functionality helps improve component cost, board size, PCB layout, and system power consumption. A simple STEP/DIR interface allows easy interfacing to the controller circuit. The internal indexer is able to execute high - accuracy microstepping without requiring the processor to control the current level. The indexer is capable of full step and half step as well as microstepping to 1/4, 1/8, and 1/16. In addition to the standard half stepping mode, a non - circular 1/2 - stepping mode is available for increased torque output

• 脉宽调制(PWM) 微步进电机驱动器
• 最高1/16微步进非循环和标准1/2步进模式

• 多功能打印机和扫描仪
• 激光束打印机
• 3D打印机
• 自动取款机和验钞机
• 视频安保摄像机
• 办公自动化设备
• 工厂自动化和机器人