SLUSFA7 July   2025 UCC57142 , UCC57148

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Timing Diagram
    8. 5.8 Typical Characteristics
  7. 6Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Stage
      2. 6.3.2 Enable/Fault (EN/FLT)
      3. 6.3.3 Driver Stage
      4. 6.3.4 Over Current (OC) Protection
      5. 6.3.5 Thermal Shutdown
    4. 6.4 Device Functional Modes
  8. 7 Applications and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Driving MOSFET/IGBT/SiC MOSFET
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 VDD Undervoltage Lockout
          2. 7.2.1.2.2 Power Dissipation
        3. 7.2.1.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
      3. 7.4.3 Thermal Consideration
  9. 8Revision History
  10. 9Mechanical, Packaging, and Orderable Information

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)
  • DBV|6
散热焊盘机械数据 (封装 | 引脚)
订购信息

6.3.2 Enable/Fault (EN/FLT)

The EN/FLT pin of the UCC5714x can report a fault signal to the DSP/MCU with the adjustable fault clear time. When a fault is detected through the OCP pin, internal TSD, or the UVLO, the EN/FLT pin is pulled down to COM internally. The EN/FLT pin will stay low until the fault is removed and the internal pulldown FET turns off, the voltage on the pin charged up with external pull-up voltage. The tFLTC is determinded by the exponential charging characteristics of the capacitor where the time constant is set by RFLTC and CFLTC as shown in Simplified Application Diagram, the RFLTC is pulled up to external VDD. CFLTC is connected from EN/FLT to COM. EN/FLTis weakly pulled up to 5 V internally through a RENU. The tFLTC can be calculated by the folumla below if it is pullup to 5 V rail.

Equation 1. tFLTC=-RFLTC×RENURFLTC+RENU×CFLTC×ln⁡1-VENHVDD

The UCC5714x provides an enable function that can allow shutdown or enable the output. When the EN/FLT is pulled up above the VENH, the output is following IN, when it is pulled down below VENL, the output will stay low. The relationship for input, output and enable can be found in Timing Diagram.