ZHCSFM4B september   2016  – december 2021 UCC21521

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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety-Related Certifications
    8. 6.8  Safety-Limiting Values
    9. 6.9  Electrical Characteristics
    10. 6.10 Switching Characteristics
    11. 6.11 Insulation Characteristics Curves
    12. 6.12 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Propagation Delay and Pulse Width Distortion
    2. 7.2 Rising and Falling Time
    3. 7.3 Input and Enable Response Time
    4. 7.4 Programmable Dead Time
    5. 7.5 Powerup UVLO Delay to OUTPUT
    6. 7.6 CMTI Testing
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 VDD, VCCI, and Under Voltage Lock Out (UVLO)
      2. 8.3.2 Input and Output Logic Table
      3. 8.3.3 Input Stage
      4. 8.3.4 Output Stage
      5. 8.3.5 Diode Structure in UCC21521
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable Pin
      2. 8.4.2 Programmable Dead Time (DT) Pin
        1. 8.4.2.1 Tying the DT Pin to VCC
        2. 8.4.2.2 DT Pin Connected to a Programming Resistor between DT and GND Pins
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Designing INA/INB Input Filter
        2. 9.2.2.2 Select External Bootstrap Diode and its Series Resistor
        3. 9.2.2.3 Gate Driver Output Resistor
        4. 9.2.2.4 Gate to Source Resistor Selection
        5. 9.2.2.5 Estimate Gate Driver Power Loss
        6. 9.2.2.6 Estimating Junction Temperature
        7. 9.2.2.7 Selecting VCCI, VDDA/B Capacitor
          1. 9.2.2.7.1 Selecting a VCCI Capacitor
          2. 9.2.2.7.2 Selecting a VDDA (Bootstrap) Capacitor
          3. 9.2.2.7.3 Select a VDDB Capacitor
        8. 9.2.2.8 Dead Time Setting Guidelines
        9. 9.2.2.9 Application Circuits with Output Stage Negative Bias
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 第三方产品免责声明
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Certifications
    4. 12.4 接收文档更新通知
    5. 12.5 支持资源
    6. 12.6 Trademarks
    7. 12.7 静电放电警告
    8. 12.8 术语表
  13. 13Mechanical, 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

3 说明

UCC21521 是一款隔离式双通道栅极驱动器，具有 4A 峰值拉电流和 6A 峰值灌电流。该器件设计用于驱动高达 5MHz 的功率 MOSFET、IGBT 和 SiC MOSFET，具有一流的传播延迟和脉宽失真度。

输入侧通过一个 5.7kVRMS 增强型隔离层与两个输出驱动器隔离，共模瞬态抗扰度 (CMTI) 的最小值为 100V/ns。两个二次侧驱动器之间采用内部功能隔离，支持高达 1500 VDC 的工作电压。

每个驱动器可配置为两个低侧驱动器、两个高侧驱动器或一个死区时间 (DT) 可编程的半桥驱动器。EN 引脚拉低时会同时关闭两个输出，悬空或拉高时可使器件恢复正常运行。作为一种失效防护机制，初级侧逻辑故障会强制两个输出为低电平。

此器件接受高达 25V 的 VDD 电源电压。3V 到 18V 的宽输入电压 VCCI 范围使得该驱动器适用于连接数字和模拟控制器。所有电源电压引脚都具有欠压锁定 (UVLO) 保护功能。

凭借所有这些高级特性，UCC21521 能够满足各类电源应用中对于高效率、高电源密度和稳健性的需求。

器件信息(1)
器件型号封装封装尺寸（标称值）
UCC21521ADWDW SOIC (16)10.30mm x 7.50mm
UCC21521DWDW SOIC (16)10.30mm x 7.50mm
UCC21521CDWDW SOIC (16)10.30mm x 7.50mm
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。
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