- 制造厂商：TI
- 产品类别：电机驱动器
- 技术类目：步进电机驱动器
- 功能描述：具有电流调节和 PWM 控制功能的 45V、2.5A 双极步进或两路 H 桥电机驱动器 IC
- 点击这里打开及下载DRV8841的技术文档资料
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The DRV8841 provides an integrated dual H-bridge motor driver solution for printers, scanners, and other automated equipment applications. The device can be used to drive one or two brushed DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.
The output driver block consists of N-channel power MOSFETs configured as H-bridges. The DRV8841 an supply up to 2.5-A peak or 1.75-A RMS output current (with proper heat sinking at 24 V and TA = 25°C) per H-bridge.
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 features are provided for overtemperature, overcurrent, and undervoltage. Fault conditions are indicated by a nFAULT pin.
- Dual H-Bridge DC Motor Driver
- Single and Dual Brushed DC
- Stepper
- PWM Control Interface
- Optional Fixed Frequency Current Regulation
- Two Bit Current Control Allows Up to Four Current Levels
- Low MOSFET On-Resistance
- 2.5-A Maximum Drive Current at 24 V and TA = 25°C
- Combined 400 mΩ RDS(ON) of High-Side and Low-Side at 24 V and TA = 25°C
- 8.2-V to 45-V Operating Supply Voltage Range
- Low Current Sleep Mode
- Built-In 3.3-V Reference Output
- Thermally Enhanced Surface Mount Package
- Protection Features
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Undervoltage Lockout (UVLO)
- Fault Condition Indication Pin (nFAULT)
- Number of full bridges
- 2
- Vs (Min) (V)
- 8.2
- Vs ABS (Max) (V)
- 47
- Full-scale current (A)
- 2.5
- Peak output current (A)
- 3
- RDS(ON) (HS + LS) (mOhms)
- 400
- Sleep current (uA)
- 10
- Control mode
- PWM
- Control interface
- Hardware (GPIO)
- Micro-stepping levels
- 4
- Features
- Current Regulation
- Rating
- Catalog
- Operating temperature range (C)
- -40 to 85
DRV8841的完整型号有：DRV8841PWP、DRV8841PWPR，以下是这些产品的关键参数及官网采购报价：
DRV8841PWP，工作温度：-40 to 85，封装：HTSSOP (PWP)-28，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV8841PWP的批量USD价格：2.442（1000+）
DRV8841PWPR，工作温度：-40 to 85，封装：HTSSOP (PWP)-28，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV8841PWPR的批量USD价格：2.116（1000+）
DRV8841EVM — 用于 DRV8841 的评估模块
DRV8841 评估模块包含一个带 PWM 控制接口的 2.5A 双路 H 桥式电机驱动器以及少量可用来驱动两个刷式直流电机、单路双极步进电机或 4 个螺线管的外部组件。板载 MSP430 MCU 与软件/GUI 支持信令和控制并支持 PWM 速度控制。通过 DRV8841EVM，设计人员能够轻松快速地使用他们的特定应用评估 DRV8841 电机驱动器。
