DRV8824数据手册集成电路（IC）的电机驱动器控制器规格书PDF

描述 Description

The DRV8824 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 MOSFETs configured as full H-bridges to drive the motor windings. The DRV8824 is capable of driving up to 1.6 A of current from each output (with proper heatsinking, 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, undervoltage lockout, and over temperature. Fault conditions are indicated through the nFAULT pin.

特性 Features

• 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
• 1.6-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)
• VMx Undervoltage Lockout (UVLO)
• Fault Condition Indication Pin (nFAULT)

• APPLICATIONS
• Automatic Teller Machines
• Money Handling Machines
• Video Security Cameras
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics