ZHCSDP7 May   2015 UCC27201A-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  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 Switching Characteristics
    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 Input Stages
        1. 7.3.1.1 UVLO (Under Voltage Lockout)
        2. 7.3.1.2 Level Shift
        3. 7.3.1.3 Boot Diode
        4. 7.3.1.4 Output Stages
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Switching the MOSFETs
        2. 8.2.2.2 Dynamic Switching of the MOSFETs
        3. 8.2.2.3 Delay Matching and Narrow Pulse Widths
        4. 8.2.2.4 Boot Diode Performance
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  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 商标
    3. 11.3 静电放电警告
    4. 11.4 术语表
  12. 12机械、封装和可订购信息

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

10 Layout

10.1 Layout Guidelines

To improve the switching characteristics and efficiency of a design, the following layout rules should be followed.

  • Locate the driver as close as possible to the MOSFETs.
  • Locate the VDD and VHB (bootstrap) capacitors as close as possible to the driver.
  • Pay close attention to the GND trace. Use the thermal pad of the DDA package as GND by connecting it to the VSS pin (GND). Note: The GND trace from the driver goes directly to the source of the MOSFET but should not be in the high current path of the MOSFET(S) drain or source current.
  • Use similar rules for the HS node as for GND for the high side driver.
  • Use wide traces for LO and HO closely following the associated GND or HS traces. 60 mil to 100 mil width is preferable where possible.
  • Use as least two or more vias if the driver outputs or SW node needs to be routed from one layer to another. For GND the number of vias needs to be a consideration of the thermal pad requirements as well as parasitic inductance.
  • Avoid LI and HI (driver input) going close to the HS node or any other high dV/dT traces that can induce significant noise into the relatively high impedance leads.
  • Keep in mind that a poor layout can cause a significant drop in efficiency versus a good PCB layout and can even lead to decreased reliability of the whole system.

10.2 Layout Example

UCC27201A-Q1 fig35_lus746.gifFigure 31. Example Component Placement