ZHCS389C June   2011  – December 2022 DRV8662

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Fast Start-up (Enable Pin)
      2. 7.3.2 Gain Control
      3. 7.3.3 Adjustable Boost Voltage
      4. 7.3.4 Adjustable Boost Current Limit
      5. 7.3.5 Internal Charge Pump
      6. 7.3.6 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Startup/shutdown Sequencing
        1. 7.4.1.1 PWM Source
        2. 7.4.1.2 DAC Source
      2. 7.4.2 Low-voltage Operation
    5. 7.5 Programming
      1. 7.5.1 Programming the Boost Voltage
      2. 7.5.2 Programing the Boost Current Limit
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 DRV8662 System Diagram with DAC Input
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Piezo Actuator Selection
          3. 8.2.1.2.3 Boost Capacitor Selection
          4. 8.2.1.2.4 Current Consumption Calculation
          5. 8.2.1.2.5 Input Filter Considerations
        3. 8.2.1.3 Application Curves
      2. 8.2.2 DRV8662 System Diagram with Filtered Single-Ended PWM Input
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Input Filter Design
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Trademarks
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息
8.2.1.2.2 Piezo Actuator Selection

There are several key specifications to consider when choosing a piezo actuator for haptics such as dimensions, blocking force, and displacement. However, the key electrical specifications from the driver perspective are voltage rating and capacitance. At the maximum frequency of 500 Hz, the DRV8662 is optimized to drive up to 50 nF at 200 VPP, which is the highest voltage swing capability. It will drive larger capacitances if the programmed boost voltage is lowered and/or the user limits the input frequency range to lower frequencies (e.g. 300 Hz).

For piezo actuator recommendations, see the DRV8662EVM User's Guide (SLOU319).
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