JAJSK72A june   2020  – october 2020 UCC23514

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Pin Configuration and Function
    1.     Pin Functions for UCC23514E
    2.     Pin Functions for UCC23514M
    3.     Pin Functions for UCC23514S
    4.     Pin Functions for UCC23514V
  7. 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
    12. 6.12 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Propagation Delay, rise time and fall time
    2. 7.2 IOH and IOL testing
    3. 7.3 CMTI Testing
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Supply
      2. 8.3.2 Input Stage
      3. 8.3.3 Output Stage
      4. 8.3.4 Protection Features
        1. 8.3.4.1 Undervoltage Lockout (UVLO)
        2. 8.3.4.2 Active Pulldown
        3. 8.3.4.3 Short-Circuit Clamping
        4. 8.3.4.4 Active Miller Clamp (UCC23514M)
    4. 8.4 Device Functional Modes
      1. 8.4.1 ESD Structure
  10. 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 Selecting the Input Resistor
        2. 9.2.2.2 Gate-Driver Output Resistor
        3. 9.2.2.3 Estimate Gate-Driver Power Loss
        4. 9.2.2.4 Estimating Junction Temperature
        5. 9.2.2.5 Selecting VCC Capacitor
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 PCB Material
  13. 12Mechanical, Packaging, and Orderable Information

8.3.4.1 Undervoltage Lockout (UVLO)

UVLO function is implemented for VCC and VEE pins to prevent an under-driven condition on IGBTs and MOSFETs. When VCC is lower than UVLOR at device start-up or lower than UVLOF after start-up, the voltage-supply UVLO feature holds the effected output low, regardless of the input forward current as shown in Table 8-2. The VCC UVLO protection has a hysteresis feature (UVLOhys). This hysteresis prevents chatter when the power supply produces ground noise which allows the device to permit small drops in bias voltage, which occurs when the device starts switching and operating current consumption increases suddenly.

When VCC drops below UVLOF, a delay, tUVLO_rec occurs on the output when the supply voltage rises above UVLOR again.

UVLO is referenced to COM on the UCC23514E, and to VEE in all other versions.

GUID-071233AE-F399-461D-9AF1-E27F5E2739A6-low.gifFigure 8-8 UVLO functionality