SLUUD92 June   2025 UCC218200-Q1

 

  1.   1
  2.   Abstract
  3. 1General TI High Voltage Evaluation User Safety Guidelines
  4. 2Module and Gate Driver Compatibility
    1. 2.1 Supported Wolfspeed Modules and Evaluation Platforms
    2. 2.2 Supported Gate Drivers
  5. 3System Overview and Functions
    1. 3.1 Features
    2. 3.2 Specifications
    3. 3.3 PCB Pinout
    4. 3.4 EVM Information
      1. 3.4.1 Primary-Side Power
      2. 3.4.2 Primary-Side I/O and Diagnostics
      3. 3.4.3 Secondary-Side Bias Supply
      4. 3.4.4 Output Stage Gate Loop
      5. 3.4.5 Current Booster
      6. 3.4.6 Short-Circuit Detection System
        1. 3.4.6.1 Short-Circuit Detection - DESAT
        2. 3.4.6.2 Short-Circuit Detection - OC
  6. 4Using the EVM
    1. 4.1 Equipment List and Board Setup
    2. 4.2 Test Setups and Procedures
      1. 4.2.1 Power-On and Bias Supply Check
      2. 4.2.2 Output Switching
  7. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  8. 6Additional Information
    1. 6.1 Trademarks
  9. 7Revision History

4.2.1 Power-On and Bias Supply Check

Note: This is a low voltage only test; do not attempt to manually probe the test points when a high bus voltage is applied to this EVM.

  1. Board setup

    1. Please plan jumpers as shown below (totally 5 jumpers).

    2. Power supply set at 12V, 0.8A. Connect power supply to VHK_12V (power) and GND_HK (GND)

    3. Tie OC_DST_HS to COM_HS, and OC_DST_LS to COM_LS. See diagram below for blue connection points

  2. Probe the VCC-GND voltage between the VCC TP and any GND TP with a multimeter. This value should be 5V.

  3. Probe the high side VDD-COM voltage by using the VDD TP and the COM TP from HS. Probe the low side VDD-COM voltage by using the VDD TP and the COM TP from LS. These values should be ~15V.

  4. Probe the high side VEE-COM voltage by using the VEE TP and the COM TP. Probe the low side VEE-COM voltage by using the VEE TP and the COM TP. These values should be ~ -4V.

  5. Make sure the 5V LED (green), the HS BIAS LED (RED), and the LS BIAS LED (RED) are on. Other than the 3 LEDs marked, no other LEDs should be ON.

  1. UCC218002QEVM-111 Jumper Settings and Test PointsUCC218002QEVM-111 Jumper Settings and Test PointsFigure 4-1 Jumper Settings and Test Points