SLUUCK0A September   2023  – June 2026 ISO5451 , ISO5451-Q1 , ISO5452 , ISO5452-Q1 , ISO5851 , ISO5851-Q1 , ISO5852S , ISO5852S-EP , ISO5852S-Q1 , UCC21710 , UCC21710-Q1 , UCC21732 , UCC21732-Q1 , UCC21736-Q1 , UCC21739-Q1 , UCC21750 , UCC21750-Q1 , UCC21759-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 General TI High Voltage Evaluation User Safety Guidelines
  6. 2Hardware
    1. 2.1 Module and Gate Driver Compatibility
      1. 2.1.1 Supported Wolfspeed Modules and Evaluation Platforms
      2. 2.1.2 Supported Gate Drivers
    2. 2.2 System Overview and Functions
      1. 2.2.1 PCB Pinout
      2. 2.2.2 Block Diagram
        1. 2.2.2.1 Primary-Side Power
        2. 2.2.2.2 Primary-Side I/O and Diagnostics
        3. 2.2.2.3 Secondary-Side Bias Supply
        4. 2.2.2.4 Output Stage Gate Loop
        5. 2.2.2.5 Current Booster
        6. 2.2.2.6 Short-Circuit Detection System
          1. 2.2.2.6.1 Short-Circuit Detection - DESAT
          2. 2.2.2.6.2 Short-Circuit Detection - OC
        7. 2.2.2.7 Temperature-Sense System
    3. 2.3 Test Setups and Procedures
      1. 2.3.1 Equipment List
      2. 2.3.2 Power-On and Bias Supply Check
      3. 2.3.3 Output Switching
      4. 2.3.4 AIN-APWM Test
  7. 3Implementation Results
    1. 3.1 EVM Example Measurements
      1. 3.1.1 Short-Circuit Testing
        1. 3.1.1.1 OC Variant: Normal Switching vs Short Circuit Soft Turn-Off
        2. 3.1.1.2 DESAT Variant: Normal Switching vs Short Circuit Soft Turn-Off
      2. 3.1.2 Analog Sensing
    2. 3.2 EVM Tuning
      1. 3.2.1 Adjust Power Supplies
        1. 3.2.1.1 Adjust VDD Bias Supply
        2. 3.2.1.2 Adjust VEE Bias Supply
        3. 3.2.1.3 Switch to Unipolar Bias Supply
        4. 3.2.1.4 Bypass VDD LDO
      2. 3.2.2 Adjust Drive Strength
        1. 3.2.2.1 Without Booster
        2. 3.2.2.2 Enabling/Disabling Booster Stage
      3. 3.2.3 Adaptations for Other ISO5x5x / UCC217xx Variants
        1. 3.2.3.1 Adapting EVM for UCC21732/39
        2. 3.2.3.2 Adapting EVM for UCC21737
        3. 3.2.3.3 Adapting EVM for ISO5451/ISO5851
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

2.2.2.5 Current Booster

The current booster is optional and not populated by default, but can be populated as desired to increase the gate drive strength. To use the current booster, follow the instructions in Section 6.2.2. There is also an RC damper circuit connected to the bases of the current booster circuit. This RC damper circuit helps with the soft turn-off functionality to reduce Vds overshoot during a short-circuiting event.