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DRV8434A-Q1

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具有集成电流检测和失速检测功能的汽车级 48V 2.5A 双极步进电机驱动器

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DRV8434A-Q1

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米6体育平台手机版_好二三四详情

Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune, Stall Detection Rating Automotive Operating temperature range (°C) -40 to 125
Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune, Stall Detection Rating Automotive Operating temperature range (°C) -40 to 125
VQFN (RGE) 24 16 mm² 4 x 4
  • AEC-Q100 Qualified for Automotive
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • PWM Microstepping Stepper Motor Driver
    • Simple STEP/DIR Interface
    • Up to 1/256 Microstepping Indexer
  • Integrated Current Sense Functionality
    • No Sense Resistors Required
    • ±4% Full-Scale Current Accuracy
  • Smart tune ripple control decay
  • Stall Detection using GPIO pins
  • 4.5 to 48V Operating Supply Voltage Range
  • Low RDS(ON): 330mΩ HS + LS at 24V, 25°C
  • High Current Capacity: 2.5A Full-Scale, 1.8A rms
  • Supports 1.8V, 3.3V, 5.0V Logic Inputs
  • Low-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Sensorless stall detection
    • Open Load Detection (OL)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (nFAULT)
  • AEC-Q100 Qualified for Automotive
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • PWM Microstepping Stepper Motor Driver
    • Simple STEP/DIR Interface
    • Up to 1/256 Microstepping Indexer
  • Integrated Current Sense Functionality
    • No Sense Resistors Required
    • ±4% Full-Scale Current Accuracy
  • Smart tune ripple control decay
  • Stall Detection using GPIO pins
  • 4.5 to 48V Operating Supply Voltage Range
  • Low RDS(ON): 330mΩ HS + LS at 24V, 25°C
  • High Current Capacity: 2.5A Full-Scale, 1.8A rms
  • Supports 1.8V, 3.3V, 5.0V Logic Inputs
  • Low-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Sensorless stall detection
    • Open Load Detection (OL)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (nFAULT)

The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).

The DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.

A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin.

The DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).

The DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.

A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin.

The DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.
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类型 标题 下载最新的英语版本 日期
* 数据表 DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins 数据表 PDF | HTML 2024年 8月 30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

设计和开发

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评估板

DRV8434AEVM — DRV8434A 具有模拟失速检测功能的步进驱动器评估模块

DRV8434A 评估模块 (EVM) 可轻松评估 DRV8434A 器件。

DRV8434A 器件是用于双极步进电机的集成电机驱动器解决方案。该器件集成了两个 N 沟道功率 MOSFET H 桥、集成电流感应和调节电路、模拟失速检测功能以及一个微步进分度器。DRV8434A 器件可由 4.5V 至 48V 的电源供电。简单的 STEP/DIR 控制接口可使外部控制器管理输出。衰减模式可以选择为慢速、混合衰减、智能调优纹波控制或智能调优动态衰减电流调节方案。

有关该评估模块的更多信息，请参阅《DRV8434AEVM 用户指南》。

用户指南: PDF
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封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RGE) 24 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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