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

6 Test Equipment

DC Voltage Source: Capable of supplying the input of the EVM up to 480 V.

DC Bias Source: Capable of 12-V output up to 1.5-A.

Function Generator: Capable of 0-V to 5-V square wave output with adjustable duty cycle and frequency in the operating range. TI recommends operating the LMG342XEVM-04X and mother boards with a switching frequency between 50 kHz to 200 kHz in hard-switching converters.

Note:

TI provides a custom interposer board that must be used when the LMG342XEVM-04X is paried with the LMG34XX-BB-EVM. The interposer board is not needed with LMG342x-BB-EVM.

Oscilloscope: Capable of at least 200 MHz operation. A 1 GHz or greater oscilloscope and probes with short ground springs are required for accurate measurements.

DC Multimeter(s): Capable of 600-V measurement, suitable for determining operation and efficiency (if desired).

DC Load: Capable of 600-V operation at up to 20-A in current-mode operation.

Fan: For the heatsink-version EVM daughter card, a dedicated cooling fan is attached on the back side of the heatsink. Please make sure the fan is powered by the 12-V power supply before test.