SLUUD92 June   2025

 

  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

Abstract

The UCC218XXXEVM-111 is a compact, half-bridge gate driver board consisting of two single-channel isolated gate drivers. It provides isolated bias supply, drive current, protection and monitoring needed for driving several different models of Wolfspeed silicon-carbide (SiC) MOSFET modules and other IGBT or SiC MOSFET modules with a similar pinout. The on-board isolated bias can provide adjustable isolated voltage with passive component change.

The board's compact form factor, combined with UCC218XXX's 5kVrms reinforced isolation, makes it a good candidate for doing high voltage tests, such as double-pulse tests and short-circuit tests, with the Wolfspeed SiC modules. The board can also be used with all variants of the UCC218xxx with minimal on-board modifications.

This user's guide describes the characteristics, operation and use of the UCC218XXXEVM-111 Evaluation Module (EVM). It currently supports 2 different variants:

  • UCC218200EVM-111
  • UCC218002EVM-111

Each variant can be ordered separately based on the variant order number information.

A complete schematic diagram, printed circuit board layouts, and bill of materials are included in this document.