SNOU176B October   2020  – March 2022

PRODUCTION DATA  

  1.   Trademarks
  2. 1 General TI High Voltage Evaluation User Safety Guidelines
    1. 1.1 Safety and Precautions
  3. 2 Introduction
    1. 2.1 LMG342XEVM-04X Daughter Card
      1. 2.1.1 FAULT and OC
      2. 2.1.2 Power Pins
      3. 2.1.3 Bootstrap Mode
      4. 2.1.4 Heat Sink
    2. 2.2 Mother Boards
      1. 2.2.1 Bias Supply
      2. 2.2.2 PWM Input
      3. 2.2.3 Fault Protection
    3. 2.3 Typical Applications
    4. 2.4 Features
  4. 3  LMG342XEVM-04X Schematic
  5. 4 Mother Board Schematic
  6. 5 Recommended Footprint
  7. 6 Test Equipment
  8. 7 Test Procedure When Paired With LMG342X-BB-EVM
    1. 7.1 Setup
    2. 7.2 Start-Up and Operating Procedure
    3. 7.3 Test Results
    4. 7.4 Shutdown Procedure
    5. 7.5 Additional Operating Notes
  9. 8 Test Procedure When Paired With LMG34XX-BB-EVM
    1. 8.1 Setup
      1. 8.1.1 List of Test Points
      2. 8.1.2 List of Terminals
    2. 8.2 Start-Up and Operating Procedure
    3. 8.3 Shutdown Procedure
    4. 8.4 Additional Operation Notes
  10. 9 Bill of Materials
  11. 10Revision History

2.2.2 PWM Input

Both LMG342X-BB-EVM and LMG34XX-BB-EVM mother boards have on-board complementary PWM generation circuits that create a pair of complimentary PWM signals out of a single PWM input. A 0-V to 5-V square wave input is recommended. In LMG34XX-BB-EVM, the default dead time is 50ns, and other values are achievable by changing the resistance values (R1 and R5). In LMG342X-BB-EVM mother boards, the dead time can be easily adjusted by tuning the trimmer resistance values (R3 and R15).