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DRV8846 - 产品图解：
DRV8846-双通道 H 桥步进电机驱动器
DRV8846-集成FET的步进栅极驱动器-步进驱动器-电机驱动器
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TI产品 - DRV8846介绍

DRV8846 - 双通道 H 桥步进电机驱动器

DRV8846是TI德州仪器公司的一款集成FET的步进栅极驱动器产品，DRV8846是双通道 H 桥步进电机驱动器，本站介绍了DRV8846的封装应用图解、特点和优点、功能等，并给出了与DRV8846相关的TI元器件型号供参考。

DRV8846 - 双通道 H 桥步进电机驱动器 - 集成FET的步进栅极驱动器 - 步进驱动器 - 德州仪器

产品特性
  • PWM Microstepping Motor Driver
    • Built-In Microstepping Indexer
    • Up to 1/32 Microstepping
    • Step/Direction Control
  • Multiple Decay Modes
    • Adaptive Decay
    • Mixed Decay
    • Slow Decay
    • Fast Decay
  • Configurable Off-Time PWM Chopping
    • 10-, 20-, or 30-μs Off-Time
  • Adaptive Blanking Time for Smooth Stepping
  • 4- to 18-V Operating Supply Voltage Range
  • 1-A Continuous/RMS Output Current per H-Bridge (at 25°C)
  • Low-Current Sleep Mode
  • 3-Bit Torque DAC to Scale Motor Current
  • Thermally Enhanced Surface Mount Package
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT)
产品应用
  • Printers
  • Scanners
  • Video Security Cameras
  • Projectors
产品说明

The DRV8846 provides a highly-integrated stepper motor driver for cameras, printers, projectors, and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8846 is capable of driving up to 1-A full scale output current (with proper heatsinking and TA = 25°C).

A simple STEP/DIR interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that adaptive decay, slow decay, fast decay, and mixed decay can be used. The PWM current chopping off-time can also be selected. 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 protection functions are provided for UVLO, overcurrent protection, short circuit protection, and overtemperature. Fault conditions are indicated via a nFAULT pin.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
DRV8846QFN (24)4.00 × 4.00 mm
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