具有集成电流检测和电流检测输出的 6A 刷式直流电机驱动器

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产品详细信息

参数

Number of full bridges 1 Vs (Min) (V) 4.5 Vs (Max) (V) 37 Peak output current (A) 6 RDS(ON) (HS + LS) (mOhms) 200 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface Hardware (GPIO) Features Current Sense Amplifier, Integrated Current Sensing Approx. price (US$) 1.15 | 1ku Rating Catalog open-in-new 查找其它 刷式直流电机驱动器

封装|引脚|尺寸

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new 查找其它 刷式直流电机驱动器

特性

  • N-channel H-bridge motor driver
    • Drives one bidirectional brushed DC motor
    • Two unidirectional brushed DC motors
    • Other resistive and inductive loads
  • 4.5-V to 37-V operating supply voltage range
  • Pin to pin RDS(on) variants
    • DRV8874: 200-mΩ (High-Side + Low-Side)
    • DRV8876: 700-mΩ (High-Side + Low-Side)
  • High output current capability
    • DRV8874: 6-A Peak
    • DRV8876: 3.5-A Peak
  • Integrated current sensing and regulation
  • Proportional current output (IPROPI)
  • Selectable current regulation (IMODE)
    • Cycle-by-cycle or fixed off time
  • Selectable input control modes (PMODE)
    • PH/EN and PWM H-bridge control modes
    • Independent half-bridge control mode
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Ultra low-power sleep mode
    • <1-µA @ VVM = 24-V, TJ = 25°C
  • Spread spectrum clocking for low electromagnetic interference (EMI)
  • Integrated protection features
    • Undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
      • Automatic retry or outputs latched off (IMODE)
    • Thermal shutdown (TSD)
    • Automatic fault recovery
    • Fault indicator pin (nFAULT)

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open-in-new 查找其它 刷式直流电机驱动器

描述

The DRV8874 is an integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. The family of devices come in pin-to-pin RDS(on) variants to support different loads with minimal design changes.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the external voltage reference pin, VREF, these devices can regulate the motor current during start-up and high-load events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, charge pump undervoltage, output overcurrent, and device overtemperature. Fault conditions are indicated on nFAULT.

View our full portfolio of brushed motor drivers on ti.com.

open-in-new 查找其它 刷式直流电机驱动器
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技术文档

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类型 标题 下载最新的英文版本 发布
技术文章 Motor-driven automation in smart home systems: how to achieve efficiency and cost savings 2020年 1月 2日
技术文章 Automating smart home systems with motor drivers 2019年 10月 24日
技术文章 Using brushed motors to improve battery life and reliability in industrial applications 2019年 7月 17日
应用手册 Advantages of Integrated Current Sensing 2019年 1月 7日
技术文章 Integrated intelligence part 3: motor startup from standstill position 2017年 12月 11日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
document-generic 用户指南
$59.00
说明

DRV8874 评估模块 (EVM) 可轻松评估 DRV8874 器件。

DRV8874 器件是一款集成式 H 桥驱动器,适用于刷式直流和电磁阀应用。使用此评估模块,可以将器件配置为 PWM、相位/使能端或独立半桥控制模式。板载 MSP430FR2100 可以为 DRV8874EVM 的输入引脚提供 PWM 信号。PWM 信号的占空比由板载电位器设置。

有关该评估模块的更多信息,请参阅《DRV8874EVM 用户指南》。

特性
  • 4.5V 至 37V 工作电压范围
  • 6A 峰值电流
  • 可配置的控制模式,包括 PH/EN、PWM 和独立半桥
  • 集成式电流感应和电流调节

软件开发

支持软件 下载
SLVC747B.ZIP (79 KB)

设计工具和仿真

仿真模型 下载
SLVMCX0A.ZIP (112 KB) - PSpice Model

CAD/CAE 符号

封装 引脚 下载
HTSSOP (PWP) 16 视图选项

订购与质量

支持与培训

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