DRV8825PWPR集成电路（IC）的电机驱动器控制器规格书PDF中文资料

DRV8825PWPR属于集成电路（IC）的电机驱动器控制器。由德州仪器制造生产的DRV8825PWPR电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。

1 Features

1• PWM Microstepping Stepper Motor Driver

– Built-In Microstepping Indexer

– Up to 1/32 Microstepping

• Multiple Decay Modes

– Mixed Decay

– Slow Decay

– Fast Decay

• 8.2-V to 45-V Operating Supply Voltage Range

• 2.5-A Maximum Drive Current at 24 V and

TA = 25°C

• Simple STEP/DIR Interface

• Low Current Sleep Mode

• Built-In 3.3-V Reference Output

• Small Package and Footprint

• Protection Features

– Overcurrent Protection (OCP)

– Thermal Shutdown (TSD)

– VM Undervoltage Lockout (UVLO)

– Fault Condition Indication Pin (nFAULT)

2 Applications

• Automatic Teller Machines

• Money Handling Machines

• Video Security Cameras

• Printers

• Scanners

• Office Automation Machines

• Gaming Machines

• Factory Automation

• Robotics

3 Description

The DRV8825 provides an integrated motor driver

solution for printers, scanners, and other automated equipment applications. The device has two H-bridge

drivers and a microstepping indexer, and is intended

to drive a bipolar stepper motor. The output driver

block consists of N-channel power MOSFET’s configured as full H-bridges to drive the motor

windings. The DRV8825 is capable of driving up to

2.5 A of current from each output (with proper heat

sinking, at 24 V and 25°C).

A simple STEP/DIR interface allows easy interfacing

to controller circuits. Mode pins allow for configuration

of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that slow decay, fast decay,

or mixed decay can be used. A low-power sleep

mode is provided which shuts down internal circuitry

to achieve very low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP

pin.

Internal shutdown functions are provided for

overcurrent, short circuit, under voltage lockout and

over temperature. Fault conditions are indicated via

the nFAULT pin.