ZHCSID2B July   2018  – September 2019 DRV8847

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     简化原理图
  4. 修订历史记录
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Timing Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Motor Drivers
      2. 7.3.2 Bridge Operation
        1. 7.3.2.1 Forward Operation
        2. 7.3.2.2 Reverse Operation
        3. 7.3.2.3 Coast Operation (Fast Decay)
        4. 7.3.2.4 Brake Operation (Slow Decay)
      3. 7.3.3 Bridge Control
        1. 7.3.3.1 4-Pin Interface
        2. 7.3.3.2 2-Pin Interface
        3. 7.3.3.3 Parallel Bridge Interface
        4. 7.3.3.4 Independent Bridge Interface
      4. 7.3.4 Current Regulation
      5. 7.3.5 Current Recirculation and Decay Modes
      6. 7.3.6 Torque Scalar
      7. 7.3.7 Stepping Modes
        1. 7.3.7.1 Full-Stepping Mode (4-Pin Interface)
        2. 7.3.7.2 Full-Stepping Mode (2-Pin Interface)
        3. 7.3.7.3 Half-Stepping Mode (With Non-Driving Fast Decay)
        4. 7.3.7.4 Half-Stepping Mode (With Non-Driving Slow Decay)
      8. 7.3.8 Motor Driver Protection Circuits
        1. 7.3.8.1 Overcurrent Protection (OCP)
          1. 7.3.8.1.1 OCP Automatic Retry (Hardware Device and Software Device (OCPR = 0b))
          2. 7.3.8.1.2 OCP Latch Mode (Software Device (OCPR = 1b))
        2. 7.3.8.2 Thermal Shutdown (TSD)
        3. 7.3.8.3 VM Undervoltage Lockout (VM_UVLO)
        4. 7.3.8.4 Open Load Detection (OLD)
          1. 7.3.8.4.1 Full-Bridge Open Load Detection
          2. 7.3.8.4.2 Load Connected to VM
          3. 7.3.8.4.3 Load Connected to GND
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 I2C Communication
        1. 7.5.1.1 I2C Write
        2. 7.5.1.2 I2C Read
      2. 7.5.2 Multi-Slave Operation
    6. 7.6 Register Map
      1. 7.6.1 Slave Address Register (Address = 0x00) [reset = 0x60]
        1. Table 17. Slave Address Register Field Descriptions
      2. 7.6.2 IC1 Control Register (Address = 0x01) [reset = 0x00]
        1. Table 18. IC1 Control Register Field Descriptions
      3. 7.6.3 IC2 Control Register (Address = 0x02) [reset = 0x00]
        1. Table 19. IC2 Control Register Field Descriptions
      4. 7.6.4 Slew-Rate and Fault Status-1 Register (Address = 0x03) [reset = 0x40]
        1. Table 20. Fault Status-1 Register Field Descriptions
      5. 7.6.5 Fault Status-2 Register (Address = 0x04) [reset = 0x00]
        1. Table 21. Fault Status-2 Register Field Descriptions
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Stepper Motor Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Current Regulation
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Dual BDC Motor Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Motor Voltage
          2. 8.2.2.2.2 Current Regulation
          3. 8.2.2.2.3 Sense Resistor
      3. 8.2.3 Open Load Implementation
        1. 8.2.3.1 Open Load Detection Circuit
        2. 8.2.3.2 OLD for Ground Connected Load
          1. 8.2.3.2.1 Half Bridge Open
          2. 8.2.3.2.2 Half Bridge Short
          3. 8.2.3.2.3 Load Connected
        3. 8.2.3.3 OLD for Supply (VM) Connected Load
          1. 8.2.3.3.1 Half Bridge Open
          2. 8.2.3.3.2 Half Bridge Short
          3. 8.2.3.3.3 Load Connected
        4. 8.2.3.4 OLD for Full Bridge Connected Load
          1. 8.2.3.4.1 Full Bridge Open
            1. 8.2.3.4.1.1 High side comparator of half-bridge-1 (OL1_HS)
            2. 8.2.3.4.1.2 Low side comparator of half-bridge-2 (OL2_LS)
          2. 8.2.3.4.2 Full Bridge Short
            1. 8.2.3.4.2.1 High side comparator of half-bridge-1 (OL1_HS)
            2. 8.2.3.4.2.2 Low side comparator of half-bridge-2 (OL2_LS)
          3. 8.2.3.4.3 Load Connected in Full Bridge
            1. 8.2.3.4.3.1 High side comparator of half-bridge-1 (OL1_HS)
            2. 8.2.3.4.3.2 Low side comparator of half-bridge-2 (OL2_LS)
  9. Power Supply Recommendations
    1. 9.1 Bulk Capacitance Sizing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
      1. 10.3.1 Maximum Output Current
      2. 10.3.2 Thermal Protection
    4. 10.4 Power Dissipation
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 Glossary
  12. 12机械、封装和可订购信息

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • PW|16
  • PWP|16
  • RTE|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

特性

  • 双路 H 桥电机驱动器
    • 单路或双路刷式直流电机
    • 一个双极步进电机
    • 电磁阀负载
  • 2.7V 至 18V 工作电压范围
  • 每个 H 桥均提供高输出电流
    • TA = 25°C 时,驱动器电流为 1A RMS
    • 并行模式下 TA = 25°C 时,驱动器电流为 2A RMS
  • VM > 5V 时具有低导通电阻
    • TA = 25°C 时,RDS(ON) (HS + LS) 为 1000mΩ
  • 多种控制接口选项
    • 4 引脚接口
    • 2 引脚接口
    • 并联桥接式接口
    • 独立桥接式接口
  • 采用 20μs 固定关断时间进行电流调节
  • 输出电流调节至 50% 的扭矩标量
  • 支持 1.8V、3.3V、5V 逻辑输入
  • 低功耗睡眠模式
    • VVM = 12V、TA = 25°C 时,睡眠模式电源电流为 1.7µA
  • 提供 I2C 器件版本 (DRV8847S)
    • I2C 寄存器上显示详细诊断
    • 多从运行支持
    • 支持标准和快速 I2C 模式
  • 小型封装和尺寸
    • 16 引脚 TSSOP(无散热垫)
    • 16 引脚 HTSSOP PowerPAD™封装
    • 16 引脚 WQFN 热封装
  • 内置保护 特性
    • VM 欠压锁定
    • 过流保护
    • 开路负载检测
    • 热关断
    • 故障条件指示引脚 (nFAULT)